Categories
Diagnonistic Test

Oxygen Saturation Test

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Definition:
Your red blood cells must carry sufficient oxygen through your arteries to all of your internal organs to keep you alive. Normally, when red blood cells pass through the lungs, 95%-100% of them are loaded, or “saturated,” with oxygen to carry. If you have lung disease or other types of medical conditions, fewer of your red blood cells may be carrying their usual load of oxygen, and your oxygen saturation might be lower than 95%. Your blood oxygen level can be measured in two ways.

How  the test is performed?
An estimate of your oxygen saturation can be made easily and painlessly with a clip that fits on your finger. This clip shines a light through one side of your finger; a detector measures the light that comes through the other side. This machine can make a good guess about your oxygen saturation because blood cells that are saturated with oxygen absorb and reflect light differently than those that are not. Blood cells are a bright red when they are loaded with oxygen, and they change to a bluish color when they are no longer carrying a full load. This machine cannot give a perfect measurement of your oxygen saturation; it can give only a rough estimate, and its measurement can be affected by things as simple as red nail polish on your finger.

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A better test for measuring your oxygen saturation is an arterial blood gas test. For this test, a small sample of blood must be drawn directly out of an artery. Most routine blood tests use blood that is drawn out of a vein, so this test is a little different. The artery that is sampled most often is the radial artery in your wrist, the one you can feel when you take your pulse. To draw blood from this artery, your doctor or a technician feels your pulse before inserting the needle. Some patients find that it hurts a little more to have blood taken from an artery instead of a vein, but the procedure takes only a few seconds. Your arterial blood can be directly tested for its oxygen level, and other tests (such as the level of carbon dioxide and the pH of the blood) can be done as well.

How do you prepare for the test?
No preparation  is needed.

Risk Factors:
Measurement made with a fingerclip has no risks. The risks of an arterial blood gas test are very small. Even temporary injury to your artery is unlikely to cause a problem, because most patients pump blood to their hand through more than one artery.

Before drawing your blood, your doctor may do a brief physical examination to make sure that you still get good blood flow to your hand even when one wrist artery is blocked. To do this test, the doctor presses down first on both sides of your wrist to block blood flow, until your hand becomes pale. Then he or she lifts off the pressure from one side to see if that is enough to let your hand turn pink again.

Must you do anything special after the test is over?
You will need to have pressure held over the artery for a few minutes after the blood is drawn, because arteries are more likely than veins to bleed afterward.

How long is it before the result of the test is known?
The results of the arterial blood gas test are processed very quickly and are available within 15 minutes in most laboratories. The fingerclip estimate of oxygen is available immediately.

Resources:
https://www.health.harvard.edu/diagnostic-tests/oxygen-saturation-test.htm

Categories
Diagnonistic Test

Bronchoscopy

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Definition;
Bronchoscopy is a technique of visualizing the inside of the airways for diagnostic and therapeutic purposes. An instrument (bronchoscope) is inserted into the airways, usually through the nose or mouth, or occasionally through a tracheostomy. This allows the practitioner to examine the patient’s airways for abnormalities such as foreign bodies, bleeding, tumors, or inflammation. Specimens may be taken from inside the lungs: biopsies, fluid (bronchoalveolar lavage), or endobronchial brushing. The construction of bronchoscopes ranges from rigid metal tubes with attached lighting devices to flexible fibreoptic instruments with realtime video equipment.
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A bronchoscope is a long snakelike instrument with a tiny video camera and biopsy instruments on one end. It can be maneuvered through your mouth and directly into the airways of your lungs. Bronchoscopy is usually done to obtain a sample of deep lung mucus or lung tissue to help diagnose cancer, pneumonia, or other lung disease.

Why it is done?
Bronchoscopy is usually done to find the cause of a lung problem. Samples of mucus or tissue may be taken from the patient’s lungs during the procedure to test in a lab.

Bronchoscopy may show a tumor, signs of an infection, excess mucus in the airways, the site of bleeding, or something blocking the airway, like a piece of food.

Sometimes bronchoscopy is used to treat lung problems. It may be done to insert a stent in an airway. An airway stent is a small tube that holds the airway open. It is used when a tumor or other condition blocks an airway.

In children, the procedure is most often used to remove something blocking the airway. In some cases, it is used to find out what’s causing a cough that has lasted for at least a few weeks.

How do you prepare for the test?
You will need to sign a consent form giving your doctor permission to perform this test. Some patients have this test done in a clinic procedure area, while others are admitted to the hospital for it. Generally your doctor will decide whether you need to be in the hospital based on your medical condition. If you are not staying in the hospital afterward, you should arrange for a ride home.

Talk with your doctor ahead of time if you are taking insulin, or if you take aspirin, nonsteroidal antiinflammatory drugs, or other medicines that affect blood clotting. It may be necessary to stop or adjust the dose of these medicines before your test. Most people need to have a blood test done some time before the procedure to make sure they are not at high risk for bleeding complications. Also tell your doctor if you have ever had an allergic reaction to the medicine lidocaine or the numbing medicine used at the dentist’s office.

Usually you will be told not to eat anything after midnight on the night before the test. This is so you will have an empty stomach in case you experience nausea from anti-anxiety medicines (sedatives) or have a choking sensation or nausea when the camera is first lowered past your throat.

What happens when the test is performed?
You wear a hospital gown during the procedure. You have an IV (intravenous) line inserted into a vein in case you need medicines or fluid during the procedure.

Bronchoscopy can be performed in a special room designated for such procedures, operating room, intensive care unit, or other location with resources for the management of airway emergencies. The patient will often be given antianxiety and antisecretory medications (to prevent oral secretions from obstructing the view), generally atropine, and sometimes an analgesic such as morphine. During the procedure, sedatives such as midazolam or propofol may be used. A local anesthetic is often given to anesthetise the mucous membranes of the pharynx, larynx, and trachea. The patient is monitored during the procedure with periodic blood pressure checks, continuous ECG monitoring of the heart, and pulse oximetry.

During the procedure, a thin, flexible tube called a bronchoscope is passed through the patient’s nose (or sometimes the mouth), down the throat, and into the airways. If the patient has a breathing tube, the bronchoscope can be passed through it to the airways.

At the bronchoscope’s tip are a light and a mini-camera, so the doctor can see your windpipe and airways. The patient will be given medicine to make them relaxed and sleepy during the procedure.

In some cases, your doctor decides that this procedure would be safer or easier if you were intubated before the test and for a short time afterward. This means having a plastic tube placed through your mouth into your main airway. If you are intubated, you are able to breathe, but you cannot speak while the tube is in place, as it passes between your vocal cords in your voice box. Intubation is always done with the assistance of an anesthesiologist, who gives you medicines to relax your throat muscles and make you unconscious for a minute or two while the tube is placed. Most patients do not require intubation.

If you are not intubated, your doctor or nurse sprays a numbing medicine onto the back of your throat just before the procedure. This medicine makes it easier for you to have the bronchoscope placed. Most patients are also given some medicine through the IV to relax them.

You lie on a hospital bed for the procedure. Your doctor (usually a pulmonary specialist) moves one end of the bronchoscope through your mouth and throat and into your trachea (windpipe). Some patients cough or gag briefly when this is done. The bronchoscope is much narrower than your trachea, so you are able to breathe easily during the procedure.

The doctor can see into your lungs by watching a TV screen that shows the view from the camera on the end of the bronchoscope. Your doctor can control a miniature vacuum at the end of the scope that allows him or her to take a sample of mucus from inside the lung. It is also possible for the doctor to take a biopsy sample of the lung tissue using a needle that can be moved through the scope. At the end of the test, the bronchoscope is pulled out, and you might cough forcefully a few times, possibly coughing out some phlegm.

Bronchoscopy usually takes 30 minutes to an hour, including setup time. The camera is usually in place for less than 20 minutes.

What risks are there from the test?
Besides the risks associated with the drug used, there are also specific risks of the procedure. Although the rigid bronchoscope can scratch or tear airway or damage the vocal cords, the risk of bronchoscopy is limited. Complications from fiberoptic bronchoscopy remain extremely low. Common complications include excessive bleeding following biopsy. A lung biopsy also may cause leakage of air called pneumothorax. Pneumothorax occurs in less than 1% of cases requiring lung biopsy. Laryngospasm is a rare complication but may sometimes require intubation. Patients with tumors or significant bleeding may experience increased difficulty breathing after a bronchoscopic procedure, sometimes due to swelling of the mucous membranes of the airways.

The risks of bronchoscopy are primarily associated with the needle biopsy procedure that is sometimes done through the bronchoscope. If a biopsy is done, the risks include bleeding in the lung or the formation of an air leak. If a patient vomits during the procedure and stomach contents leak down around the bronchoscope, this can irritate the lung and cause a type of pneumonia called aspiration pneumonia. Some patients have a hoarse voice or a sore throat for a day or two after bronchoscopy. Most people have no side effects from the procedure.

The other risks include:

*A drop in a patient’s oxygen level during the procedure. Oxygen will be administered if this happens.
*A slight risk of minor bleeding and developing a fever or pneumonia.

A rare but more serious side effect is a pneumothorax. A pneumothorax is a condition in which air or gas collects in the space around the lungs. This can cause the lung(s) to collapse.

This condition is easily treated and may go away on its own. If it interferes with breathing, a tube may need to be placed in the space around the lungs to remove the air.

A chest X-ray may be done after bronchoscopy to check for problems

Must you do anything special after the test is over?
You will probably feel sleepy after the procedure for a few hours, due to the anti-anxiety medicines. Generally, patients either spend a few hours in a recovery room or stay overnight in the hospital after bronchoscopy. If you do go home the same day, you should not drive or drink alcohol.

What does bronchoscopy show?
Bronchoscopy may show a tumor, signs of an infection, excess mucus in the airways, the site of bleeding, or something blocking the airway.

The doctor will use the procedure results to decide how to treat any lung problems that were found. Other tests may be needed.
Recovery and recuperation :
Patients will be advised by their doctors about when they can return to their normal activities, such as driving, working, and physical activity. For the first few days, a sore throat, cough, and hoarseness are common. The doctor should be called right away if the patient:

*Develops a fever
*Has chest pain
*Has trouble breathing
*Coughs up more than a few tablespoons of blood

How long is it before the result of the test is known?
Your doctor can tell you what the airways in your lungs look like as soon as the test is over. If a sample of mucus or lung tissue was obtained, analysis will require anywhere from a few hours to a few days.

Resources:
https://www.health.harvard.edu/diagnostic-tests/bronchoscopy.htm
http://www.daviddarling.info/encyclopedia/B/bronchoscopy.html
http://en.wikipedia.org/wiki/Bronchoscopy

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Health Quaries

Some Health Quaries & Answers

Jobless and lethargic :-

Q: My parents did not want me to study engineering, as I am an only child and a girl. Their old fashioned idea was that I should get a bachelors degree and get married. I finished my BE and was recruited on campus. Unfortunately, the company has been postponing my joining. Now I feel I may never get the job. I feel lethargic, am putting on weight and sleep all day.

A: Perhaps a feeling of being out of control and uncertainty about your professional future has caused this change in your personality. It is unsettling and depressing. Try to establish a routine even though at present you do not need to. Get up in the morning, jog for 40 minutes, do some ground exercises and keep an eye on your diet. Join a course that will enhance your skills. If you are still worried, check your haemoglobin and thyroid functions to see if your symptoms are due to some correctable extrinsic cause like anaemia or thyroid malfunction.

Irregular periods ..
Q: I have irregular periods which appear embarrassingly unscheduled. I am now 23 years old and my parents are looking for a “suitable alliance”. They are convinced that “everything will be alright after marriage” but I am not. Will pregnancy be a problem?

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A: Your body won’t change and start behaving differently just because you are married. It is better to investigate the reasons for your irregular periods before you proceed with an “alliance”. The doctor will probably do an ultrasound scan of your uterus and ovaries and suggest blood tests to check your hormone levels. The cause of the irregularity can usually be treated. It is better to know and be aware rather than proceed blindly with the surmise that “everything will be alright after marriage”.

No sex :-
Q: I was recently diagnosed as being diabetic and hypertensive. Now I am facing erectile problem and the problem of premature ejaculation. Can these be cured?

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A: This problem can occur in people with diabetes and hypertension. It is due to a neuropathy or nerve dysfunction. It can get aggravated if the diabetes is uncontrolled and also by some medications prescribed for hypertension. You need to control your blood sugar well and inform your physician about this problem so that suitable alterations can be made in the medication.

Small head :
Q: My child has a very small head and is also not developing normally. The doctor said this is “microcephaly”. She is three years old and has stiff limbs. She speaks only a few words and has seizures. Will this recur in the next pregnancy?

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A: Microcephaly can be present at birth or it may develop in the first few years of life. It occurs due to interference with the growth of the brain during the early months of development in the uterus. It can be genetic, or occur because the mother unfortunately develops an infection with cytomegalovirus, rubella (German measles) or varicella (chicken pox) virus.

If there are other affected family members, or if you are married to a close relative, the likelihood of recurrence is greater. Immunisations against varicella and rubella are available. Folic acid supplements (5 mg a day) started even before pregnancy occurs and continued for the first five months of conception also helps normal brain development.

Thumping headache :

Q: I develop a severe headache on one side of the head whenever I have a cold and then I cannot concentrate.

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A: Your nose may be blocked because of the discharge caused by the cold. Try putting saline nose drops into each nostril with the head tilted back and then take steam inhalations. Avoid vaporising mosquito repellents (available as mats coils and liquids) or room fresheners which aggravate the problem. If the headache still persists try taking paracetemol and an over the counter antihistamine like non-sedating levocetrizine.


Sources
: The Telegraph (Kolkata, India)

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News on Health & Science

Steps on Enlarged Heart ‘Uncovered’

Researchers in the US claim to have got new insight into the mechanisms that underlie an enlarged heart — a finding that could lead to development of new treatment for managing this common cardiac ailment.

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An enlarged heart can lead to heart failure (Image: CNRI, Science Photo Library)

.
According to them, high blood pressure, heart valve disease and heart attacks can lead to a abnormal thickening of the heart muscle, called myocardial hypertrophy, which plays a role in the pathological increase in the heart size.

At the molecular level, signals driving myocardial hypertrophy, like elevated levels of catecholamine hormones, activate the Myocyte Enhancer Factor (MEF) proteins. This alters gene expression in heart muscle cells and induces an adverse developmental paradigm known as “fetal gene response”.

“Previous research has shown that the signalling pathways leading to MEF2 are altered during pathological cardiac hypertrophy. Although we know that enzymes called histone deacetylases (HDACs) control MEF2 activity, it was not clear that HDACs and MEF2 were integrated into a larger signalling unit,” lead author John D Scott said.

To further identify the molecular mechanisms associated with cardiac hypertrophy, Scott and colleagues at the University of Washington studied cardiac A-Kinase Anchoring Proteins (AKAPs), which are known to play a critical role in organising signalling complexes in response to catecholamine hormones and transmitted signals within cells.

The researchers found that AKAP-Lbc functions as a scaffolding protein that selectively directs catecholamine signals to the transcriptional machinery to potentiate the hypertrophic response, the ‘Cell Press‘ journal reported.

“Our study supports a model where AKAP-Lbc facilitates activation of protein kinase D, which in turn phosphorylates the histone deacetylase HDAC5 to promote its export from the nucleus. The reduction in nuclear HDAC5 favoured MEF2 transcription and onset of cardiac hypertrophy,” Scott said.

Sources: The Times Of India

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Categories
Ailmemts & Remedies

Fibromyalgia

Definition:-

Fibromyalgia is a chronic condition characterized by widespread pain in your muscles, ligaments and tendons, as well as fatigue and multiple tender points — places on body where slight pressure causes pain. Fibromyalgia is more common in women than in men. Previously, fibromyalgia was known by other names such as fibrositis, chronic muscle pain syndrome, psychogenic rheumatism and tension myalgias.

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It is a disorder classified by the presence of chronic widespread pain and tactile allodynia. While the criteria for such an entity have not yet been thoroughly developed, the recognition that fibromyalgia involves more than just pain has led to the frequent use of the term “fibromyalgia syndrome”. It is not contagious, and recent studies suggest that people with fibromyalgia may be genetically predisposed. The disorder is not directly life-threatening. The degree of symptoms may vary greatly from day to day with periods of flares (severe worsening of symptoms) or remission; however, the disorder is generally perceived as non-progressive.

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Although the intensity of symptoms may vary, they’ll probably never disappear completely. It may be reassuring to know, however, that fibromyalgia isn’t progressive or life-threatening. Treatments and self-care steps can improve fibromyalgia symptoms and general health.

Incidence: It affects more females than males, with a ratio of 9:1 by American College of Rheumatology (ACR) criteria. Fibromyalgia is seen in about 2% of the general population. It is most commonly diagnosed in individuals between the ages of 20 and 50, though onset can occur in childhood.

Signs and symptoms:-
The defining symptoms of fibromyalgia are chronic, widespread pain and tenderness to light touch. There is also typically moderate to severe fatigue. Those affected may also experience heightened sensitivity of the skin (also called allodynia), tingling of the skin (often needle-like), achiness in the muscle tissues, prolonged muscle spasms, weakness in the limbs, and nerve pain. Chronic sleep disturbances are also characteristic of fibromyalgia. Indeed, studies suggest that sleep disturbances are related to a phenomenon called alpha-delta sleep, a condition in which deep sleep (associated with delta EEG waves) is frequently interrupted by bursts of brain activity similar to wakefulness (i.e. alpha waves). Deeper stages of sleep (stages 3 & 4) are often dramatically reduced.

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Eighteen sites (nine pairs) or tender points seen in patients with fybromyalgia

.Signs and symptoms of fibromyalgia can vary, depending on the weather, stress, physical activity or even the time of day. Common signs and symptoms include:

* Widespread pain. Fibromyalgia is characterized by pain in specific areas of your body when pressure is applied, including the back of your head, upper back and neck, upper chest, elbows, hips and knees. The pain generally persists for months at a time and is often accompanied by stiffness.
* Fatigue and sleep disturbances. People with fibromyalgia often wake up tired and unrefreshed even though they seem to get plenty of sleep. Some studies suggest that this sleep problem is the result of a sleep disorder called alpha wave interrupted sleep pattern, a condition in which deep sleep is frequently interrupted by bursts of brain activity similar to wakefulness. So people with fibromyalgia miss the deep restorative stage of sleep. Nighttime muscle spasms in your legs and restless legs syndrome also may be associated with fibromyalgia.
* Irritable bowel syndrome (IBS). The constipation, diarrhea, abdominal pain and bloating associated with IBS are common in people with fibromyalgia.
* Headaches and facial pain. Many people who have fibromyalgia also have headaches and facial pain that may be related to tenderness or stiffness in their neck and shoulders. Temporomandibular joint (TMJ) dysfunction, which affects the jaw joints and surrounding muscles, also is common in people with fibromyalgia.
* Heightened sensitivity. It’s common for people with fibromyalgia to report being sensitive to odors, noises, bright lights and touch.

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Other common signs and symptoms include:

* Depression
* Numbness or tingling sensations in the hands and feet (paresthesia)
* Difficulty concentrating
* Mood changes
* Chest pain
* Dry eyes, skin and mouth
* Painful menstrual periods
* Dizziness
* Anxiety

Causes:

The cause of fibromyalgia is unknown. Fibromyalgia can, but does not always, start as a result of some trauma such as a traffic accident, major surgery, or disease. Some evidence shows that Lyme Disease may be a trigger of fibromyalgia symptoms.[21] Another study suggests that more than one clinical entity may be involved, ranging from a mild, idiopathic inflammatory process to clinical depression[22]

Genetics

By using self-reported “Chronic Widespread Pain” (CWP) as a surrogate marker for fibromyalgia, the Swedish Twin Registry found that a modest genetic contribution may exist:

* Monozygotic twins with CWP have a 15% chance that their twin sibling has CWP
* Dizygotic twins with CWP have a 7% chance that their twin sibling has CWP

Stress

Studies have shown that stress is a significant precipitating factor in the development of fibromyalgia, and that PTSD is linked with fibromyalgia.The Amital study found that 49% of PTSD patients fulfilled the criteria for FMS, compared with none of the controls.

A non-mainstream hypothesis that fibromyalgia may be a psychosomatic illness has been described by John E. Sarno’s “tension myositis syndrome”. He believes many cases of chronic pain result from changes in the body caused by the mind’s subconscious strategy of distracting painful or dangerous emotions. Education, attitude change, and, in some cases, psychotherapy are treatments proposed to stop the brain from using that strategy.

Dopamine abnormality

Dopamine is a catecholamine neurotransmitter perhaps best known for its role in the pathology of schizophrenia, Parkinson’s disease and addiction. There is also strong evidence for a role of dopamine in restless leg syndrome , which is a common co-morbid condition in patients with fibromyalgia. In addition, dopamine plays a critical role in pain perception and natural analgesia. Accordingly, musculoskeletal pain complaints are common among patients with Parkinson’s disease , which is characterized by drastic reductions in dopamine owing to neurodegeneration of dopamine-producing neurons, while patients with schizophrenia, which is thought to be due (in part) to hyperactivity of dopamine-producing neurons, have been shown to be relatively insensitive to pain. Interestingly, patients with restless legs syndrome have also been demonstrated to have hyperalgesia to static mechanical stimulation.

Fibromyalgia has been commonly referred to as a “stress-related disorder” due to its frequent onset and worsening of symptoms in the context of stressful events. It was therefore proposed that fibromyalgia may represent a condition characterized by low levels of central dopamine that likely results from a combination of genetic factors and exposure to environmental stressors, including psychosocial distress, physical trauma, systemic viral infections or inflammatory disorders (e.g. rheumatoid arthritis, systemic lupus erythematosus). This conclusion was based on three key observations: (1) fibromyalgia is associated with stress; (2) chronic exposure to stress results in a disruption of dopamine-related neurotransmission; and (3) dopamine plays a critical role in modulating pain perception and central analgesia in such areas as the basal ganglia including the nucleus accumbens, insular cortex, anterior cingulate cortex, thalamus, periaqueductal gray, and spinal cord.

In support of the ‘dopamine hypothesis of fibromyalgia’, a reduction in dopamine synthesis has been reported by a study that used positron emission tomography (PET) and demonstrated a reduction in dopamine synthesis among fibromyalgia patients in several brain regions in which dopamine plays a role in inhibiting pain perception, including the mesencephalon, thalamus, insular cortex and anterior cingulate cortex.A subsequent PET study demonstrated that, whereas healthy individuals release dopamine into the caudate nucleus and putamen during a tonic experimental pain stimulus (i.e. hypertonic saline infusion into a muscle bed), fibromyalgia patients fail to release dopamine in response to pain and, in some cases, actually have a reduction in dopamine levels during painful stimulation. Moreover, a substantial subset of fibromyalgia patients respond well in controlled trials to pramipexole, a dopamine agonist that selectively stimulates dopamine D2/D3 receptors and is used to treat both Parkinson’s disease and restless legs syndrome. Trials of other dopamine agonists are currently ongoing.

Serotonin

Serotonin is a neurotransmitter that is known to play a role in regulating sleep patterns, mood, feelings of well-being, concentration and descending inhibition of pain. Accordingly, it has been hypothesized that the pathophysiology underlying the symptoms of fibromyalgia may be a dysregulation of serotonin metabolism, which may explain (in part) many of the symptoms associated with the disorder. This hypothesis is derived in part by the observation of decreased serotonin metabolites in patient plasma and cerebrospinal fluid. However, selective serotonin reuptake inhibitors (SSRIs) have met with limited success in alleviating the symptoms of the disorder, while drugs with activity as mixed serotonin-norepinephrine reuptake inhibitors (SNRIs) have been more successful. Accordingly, duloxetine (Cymbalta), a SNRI originally used to treat depression and painful diabetic neuropathy, has been demonstrated by controlled trials to relieve symptoms of some patients. Eli Lilly and Company, the manufacturer of duloxetine has submitted a supplementary new drug application (sNDA) to the FDA for approval of it use in the treatment of FM. The relevance of dysregulated serotonin metabolism to the pathophysiology is a matter of debate.  Ironically, one of the more effective types of medication for the treatment of the disorder (i.e. serotonin 5-HT3 antagonists) actually block some of the effects of serotonin.

Sleep disturbance
Electroencephalography studies have shown that people with fibromyalgia lack slow-wave sleep and circumstances that interfere with stage four sleep (pain, depression, serotonin deficiency, certain medications or anxiety) may cause or worsen the condition.[59] According to the sleep disturbance hypothesis, an event such as a trauma or illness causes sleep disturbance and possibly initial chronic pain that may initiate the disorder. The hypothesis supposes that stage 4 sleep is critical to the function of the nervous system, as it is during that stage that certain neurochemical processes in the body ‘reset’. In particular, pain causes the release of the neuropeptide substance P in the spinal cord which has the effect of amplifying pain and causing nerves near the initiating ones to become more sensitive to pain. Under normal circumstances, areas around a wound to become more sensitive to pain but if pain becomes chronic and body-wide this process can run out of control. The sleep disturbance hypothesis holds that deep sleep is critical to reset the substance P mechanism and prevent this out-of-control effect.

The sleep disturbance/substance P hypothesis could explain “tender points” that are characteristic of fibromyalgia but which are otherwise enigmatic, since their positions don’t correspond to any particular set of nerve junctions or other obvious body structures.  The hypothesis proposes that these locations are more sensitive because the sensory nerves that serve them are positioned in the spinal cord to be most strongly affected by substance P. This hypothesis could also explain some of more general neurological features of fibromyalgia, since substance P is active in many other areas of the nervous system. The sleep disturbance hypothesis could also provide a possible connection between fibromyalgia, chronic fatigue syndrome (CFS) and post-polio syndrome through damage to the ascending reticular activating system of the reticular formation. This area of the brain, in addition to apparently controlling the sensation of fatigue, is known to control sleep behaviors and is also believed to produce some neuropeptides, and thus injury or imbalance in this area could cause both CFS and sleep-related fibromyalgia.

Critics of the hypothesis argue that it does not explain slow-onset fibromyalgia, fibromyalgia present without tender points, or patients without heightened pain symptoms, and a number of the non-pain symptoms present in the disorder.

Human growth hormone
An alternate hypothesis suggests that stress-induced problems in the hypothalamus may lead to reduced sleep and reduced production of human growth hormone (HGH) during slow-wave sleep. People with fibromyalgia tend to produce inadequate levels of HGH. Most patients with FM with low IGF-I levels failed to secrete HGH after stimulation with clonidine and l-dopa.

This view is supported by the fact that those hormones under the direct or indirect control of HGH, including IGF-1, cortisol, leptin and neuropeptide Y are abnormal in people with fibromyalgia, In addition, treatment with exogenous HGH or growth hormone secretagogue reduces fibromyalgia related pain and restores slow wave sleep though there is disagreement about the proposition.

Deposition disease

The ‘deposition hypothesis of fibromyaglia’ posits fibromyalgia is due to intracellular phosphate and calcium accumulations that eventually reaches levels sufficient to impede the ATP process, possibly caused by a kidney defect or missing enzyme that prevents the removal of excess phosphates from the blood stream. Accordingly, proponents of this hypothesis suggest that fibromyalgia may be an inherited disorder, and that phosphate build-up in cells is gradual but can be accelerated by trauma or illness. Calcium is required for the excess phosphate to enter the cells.[citation needed]The additional phosphate slows down the ATP process; however the excess calcium prods the cell to continue producing ATP.

Diagnosis is made with a specialized technique called mapping, a gentle palpitation of the muscles to detect lumps and areas of spasm thought to be caused by an excess of calcium in the cytosol of the cells. The mapping technique is notably different from the manual tenderpoint examination  upon which a diagnosis of fibromyalgia depends and is purportedly different from the detection of trigger points that characterize the myofascial pain syndrome.

While this hypothesis does not identify the causative mechanism in the kidneys, it proposes a treatment known as guaifenesin therapy. This treatment involves administering the drug guaifenesin to a patient’s individual dosage, avoiding salicylic acid in medications or on the skin. Often products for salicylate sensitivity are very helpful. If the patient is also hypoglycemic, a diet is designed to keep insulin levels low.

The phosphate build-up hypothesis explains many of the symptoms present in fibromyalgia  and proposes an underlying cause. The guaifenesin treatment, based on this hypothesis, has received mixed reviews, with some practitioners claiming many near-universal successes  and others reporting no success. Of note, guaifenesin is also a central acting muscle relaxant used in veterinary anaesthesia that is structurally related to methocarbamol, a property that might explain its utility in some fibromyalgia patients. A controlled trial of guaifenesin for the treatment of fibromyalgia demonstrated no evidence for efficacy of this medication.   However, this study has been criticized by the chief proponent of the deposition hypothesis for not limiting salicylic acid exposure in patients, and for studying the effectiveness of only guaifenesin, not the entire treatment method.As of 2005, further studies to test the protocol’s effectiveness are in the planning stages, with funding for independent studies largely collected from groups which advocate the hypothesis. It should be noted that nothing in the scientific literature supports the proposition that fibromyalgia patients have excessive levels of phosphate in their tissues.

Other hypotheses

Other hypotheses have been proposed related to various toxins from the patient’s environment, viral causes such as the Epstein-Barr Virus, growth hormone deficiencies possibly related to an underlying (maybe autoimmune) disease affecting the hypothalamus gland, an aberrant immune response to intestinal bacteria, neurotransmitter disruptions in the central nervous system, and erosion of the protective chemical coating around sensory nerves. A 2001 study suggested an increase in fibromyalgia among women with extracapsular silicone gel leakage, compared to women whose implants were not broken or leaking outside the capsule. This association has not repeated in a number of related studies, and the US-FDA concluded “the weight of the epidemiological evidence published in the literature does not support an association between fibromyalgia and breast implants.” Due to the multi-systemic nature of illnesses such as fibromyalgia and chronic fatigue syndrome (CFS/ME), an emerging branch of medical science called psychoneuroimmunology (PNI) is looking into how the various hypotheses fit together.

Another hypothesis on the cause of symptoms in fibromyalgia states that patients suffer from vasomotor dysregulation causing improper vascularflow and hypoperfusion (decreased blood flow to a given tissue or organ).

Always a comorbid disease?

Cutting across several of the above hypotheses is the proposition that fibromyalgia is almost always a comorbid disorder, occurring in combination with some other disorder that likely served to “trigger” the fibromyalgia in the first place. Two possible triggers are gluten sensitivity and/or irritable bowel. Irritable bowel is found at high frequency in fibromyalgia, and a large coeliac support group survey of adult celiacs revealed that 7% had fibromyalgia and also has a co-occurrence with chronic fatique.

According to this hypothesis, some other disorder (or trauma) occurs first, and fibromyalgia follows as a result. In some cases, the original disorder abates on its own or is separately treated and cured, but the fibromyalgia remains. This is especially apparent when fibromyalgia seems triggered by major surgery. In other cases the two disorders coexist.

Risk factors:-

Risk factors for fibromyalgia include:

* Your sex. Fibromyalgia occurs more often in women than in men.
* Age. Fibromyalgia tends to develop during early and middle adulthood. But it can also occur in children and older adults.
* Disturbed sleep patterns. It’s unclear whether sleeping difficulties are a cause or a result of fibromyalgia — but people with sleep disorders, such as nighttime muscle spasms in the legs, restless legs syndrome or sleep apnea, can also develop fibromyalgia.
* Family history. You may be more likely to develop fibromyalgia if a relative also has the condition.
* Rheumatic disease. If you have a rheumatic disease, such as rheumatoid arthritis, lupus or ankylosing spondylitis, you may be more likely to have fibromyalgia.

Treatment:-

As with many other syndromes, there is no universally accepted cure for fibromyalgia, though some physicians claim to have found cures.However, a steady interest in the disorder on the part of academic researchers as well as pharmaceutical interests has led to improvements in its treatment, which ranges from symptomatic prescription medication to alternative and complementary medicine.

The European League Against Rheumatism (EULAR) issued the first guidelines[82] for the treatment of fibromyalgia syndrome (FMS) and published them in the September 17th On-line First issue of the Annals of the Rheumatic Diseases.

Medications

Many medications are used to treat specific symptoms of fibromyalgia, such as muscle pain and insomnia.

Pain relief

A number of pain relievers have been prescribed for fibromyalgia. This includes NSAID medications over the counter, COX-2 inhibitors, and tramadol in prescription form for more advanced cases. Recently, pregabalin (marketed as Lyrica) has been given FDA approval for the treatment of diagnosed Fibromyalgia.

Muscle relaxants

Muscle relaxants, such as cyclobenzaprine (Flexeril) or tizanidine (Zanaflex), may be used to treat the muscle pain associated with the disorder.

Tricyclic antidepressants (TCAs)

Traditionally, low doses of sedating antidepressants (e.g. amitriptyline and trazodone) have been used to reduce the sleep disturbances that are associated with fibromyalgia and are believed by some practitioners to alleviate the symptoms of the disorder. Because depression often accompanies chronic illness, these antidepressants may provide additional benefits to patients suffering from depression. Amitriptyline is often favoured as it can also have the effect of providing relief from neuralgenic or neuropathic pain.[citation needed] It is to be noted that Fibromyalgia is not considered a depressive disorder; antidepressants are used for their sedating effect to aid in sleep.

Selective serotonin reuptake inhibitors (SSRIs)

Research data consistently contradict the utility of agents with specificity as serotonin reuptake inhibitors for the treatment of core symptoms of fibromyalgia.  Moreover, SSRIs are known to aggravate many of the comorbidities that commonly affect patients with fibromyalgia including restless legs syndrome and sleep bruxism.

Anti-seizure drugs

Anti-seizure drugs are also sometimes used, such as gabapentin[93] and pregabalin (Lyrica). Pregabalin, originally used for the nerve pain suffered by diabetics, has been approved by the American Food and Drug Administration for treatment of fibromyalgia. A randomized controlled trial of pregabalin 450 mg/day found that a number needed to treat of 6 patients for one patient to have 50% reduction in pain.

Dopamine agonists

Dopamine agonists (e.g. pramipexole (Mirapex) and ropinirole(ReQuip)) have been studied for use in the treatment of fibromyalgia with good results. A trial of transdermal rotigotine is currently on going .

Combination therapy

A controlled clinical trial of amitriptyline and fluoxetine demonstrated utility when used in combination.

Central Nervous System (CNS) Stimulants

Cognitive dysfunction in fibromyalgia, often referred to as “brain fog,” may be treated with low doses of central nervous system (CNS) stimulants such as Modafinil, Adderall, Provigil, Methylphenidate (Ritalin, Ritalin SR, Methylin, Methylin ER.) These non-amphetamine stimulants are also used to treat the chronic fatigue that is characteristic of fibromyalgia.

Stimulants may be habit forming and can have other serious side effects, so it is important to note that other treatments may be effective. Care should be taken with any prescription, as people with fibromyalgia are known to be sensitive to medications.

Cannabis and cannabinoids

Fibromyalgia patients frequently self-report using cannabis therapeutically to treat symptoms of the disorder. Writing in the July 2006 issue of the journal Current Medical Research and Opinion, investigators at Germany’s University of Heidelberg evaluated the analgesic effects of oral THC (?9-tetrahydrocannabinol) in nine patients with fibromyalgia over a 3-month period. Subjects in the trial were administered daily doses of 2.5 to 15 mg of THC, but received no other pain medication during the trial. Among those participants who completed the trial, all reported a significant reduction in daily recorded pain and electronically induced pain.Previous clinical and preclinical trials have shown that both naturally occurring and endogenous cannabinoids hold analgesic qualities,particularly in the treatment of cancer pain and neuropathic pain, both of which are poorly treated by conventional opioids. As a result, some experts have suggested that cannabinoid agonists would be applicable for the treatment of chronic pain conditions unresponsive to opioid analgesics such as fibromyalgia, and they propose that the disorder may be associated with an underlying clinical deficiency of the endocannabinoid system.

Topical remedies

Users of Epsom Salts in the gel form (Magnesium Sulfate), have reported significant and lasting relief from pain associated with fibromyalgia. Epsom Salts have long been touted for their ability to reduce pain and swelling.

Non-drug treatment

Physical treatments

Studies have found exercise improves fitness and sleep and may reduce pain and fatigue in some people with fibromyalgia. Many patients find temporary relief by applying heat to painful areas. Those with access to physical therapy, massage, or acupuncture may find them beneficial. Most patients find exercise, even low intensity exercise to be extremely helpful. Osteopathic manipulative therapy can also temporarily relieve pain due to fibromyalgia.

A holistic approach—including managing diet, sleep, stress, activity, and pain—is used by many patients. Dietary supplements, massage, chiropractic care, managing blood sugar levels, and avoiding known triggers when possible means living as well as it is in the patient’s power to do.[citation needed]

Psychological/behavioral therapies

As the nature of fibromyalgia is not well understood, some physicians believe that it may be psychosomatic or psychogenic.Although there is no universally accepted cure, some doctors have claimed to have successfully treated fibromyalgia when a psychological cause is accepted.

Cognitive behavioral therapy has been shown to improve quality of life and coping in fibromyalgia patients and other sufferers of chronic pain. Neurofeedback has also shown to provide temporary and long-term relief.

Biofeedback and self-management techniques such as pacing and stress management may be helpful for some patients. The use of medication to improve sleep helps some patients, as does supplementation with folic acid and ginkgo biloba.

Dietary treatment

In a 2001 review of four case studies, symptom alleviation was found by minimizing consumption of monosodium glutamate.

Investigational treatments

Milnacipran, a serotonin-norepinephrine reuptake inhibitor (SNRI), is available in parts of Europe where it has been safely prescribed for other disorders. On May 22nd, 2007, a Phase III study demonstrated statistically significant therapeutic effects of Milnacipran as a treatment of fibromyalgia syndrome. At this time, only initial top-line results are available and further analyses will be completed in the coming weeks. If ultimately approved by the FDA, Milnacipran could be distributed in the United States as early as summer, 2008.

Among the more controversial therapies involves the use of guaifenesin; called St. Amand’s protocol or the guaifenesin protocol the efficacy of guaifenesin in treating fibromyalgia has not been proven in properly designed research studies. Indeed, a controlled study conducted by researchers at Oregon Health Science University in Portland failed to demonstrate any benefits from this treatment, and the lead researcher has suggested that the annecdotaly reported benefits where due to placebo suggestion. The results of the study have since been contested by Dr St. Amand, who was a co-author or the original research report.

Dextromethorphan is an over-the-counter cough medicine
with activity as an NMDA receptor antagonist. It has been used in the research setting to investigate the nature of fibromyalgia pain; however, there are no controlled trials of safety or efficacy in clinical use.

Living with fibromyalgia:-

Fibromyalgia can affect every aspect of a person’s life. While neither degenerative nor fatal, the chronic pain associated with fibromyalgia is pervasive and persistent. FMS can severely curtail social activity and recreation, and as many as 30% of those diagnosed with fibromyalgia are unable to maintain full-time employment.[citation needed] Like others with disabilities, individuals with FMS often need accommodations to fully participate in their education or remain active in their careers.

In the United States, those who are unable to maintain a full-time job due to the condition may apply for Social Security Disability benefits. Although fibromyalgia has been recognized as a genuine, severe medical condition by the government, applicants are often denied benefits, since there are no formal diagnostic criteria or medically provable symptoms. Because of this, if an applicant does have a medically verifiable condition that would justify disability benefits in addition to fibromyalgia, it is recommended that they not list fibromyalgia in their claim. However, most are awarded benefits at the judicial level; the entire process often takes two to four years.

In the United Kingdom, the Department for Work and Pensions recognizes fibromyalgia as a condition for the purpose of claiming benefits and assistanc.

Fibromyalgia is often referred to as an “invisible” illness or disability due to the fact that generally there are no outward indications of the illness or its resulting disabilities. The invisible nature of the illness, as well as its relative rarity and the lack of understanding about its pathology, often has psychosocial complications for those that have the disorder. Individuals suffering from invisible illnesses in general often face disbelief or accusations of malingering or laziness from others that are unfamiliar with the disorder.

There are a variety of support groups on the Web that cater to fibromyalgia sufferers.

Controversies:-
The validity of fibromyalgia as a unique clinical entity is a matter of some contention among researchers in the field. For example, it has been proposed that the pathophysiology responsible for the symptoms that are collectively classified as representing “fibromyalgia” is poorly understood, thereby suggesting that the fibromyalgia phenotype which is the difference between an individual’s heredity and what that heredity produces, may result from several different disease processes that have global hyperalgesia – an increased sensitivity to pain – and allodynia in common, an observation that has led to the proposition that current diagnostic criteria are insufficient to differentiate patient groups from each other. Alternatively, there is evidence for the existence of differing pathophysiological – which is the study of the disturbance of normal mechanical, physical, and biochemical functions of the body – within the greater fibromyalgia construct[, which may be interpreted to represent evidence for the existence of biologically distinct “sub-types” of the disorder akin to conditions such as epilepsy, schizophrenia and major depressive disorder. In a January 14, 2008 article in the New York Times, the controversy of the reality of the disease and its proposed cures are discussed, while citing that the American College of Rheumatology, the Food and Drug Administration and insurers recognize fibromyalgia as a diagnosable disease. Drug companies are aggressively pursuing fibromyalgia treatments, seeing the potential for a major new market.

You may click to learn more about Fibromyalgia

Yoga & meditation may be very helpful for all kind of  Fibromyalgia

Disclaimer: This information is not meant to be a substitute for professional medical advise or help. It is always best to consult with a Physician about serious health concerns. This information is in no way intended to diagnose or prescribe remedies.This is purely for educational purpose

Resources:
http://en.wikipedia.org/wiki/Fibromyalgia
MayoClinic.com

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