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News on Health & Science

Whey Protein Improves Heart Health

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A wheyprotein-rich ingredient may improve blood vessel function in healthy individuals, reports a new randomized, double-blind study.
Two weeks of supplementation resulted in a 1.5 percent improvement in blood flow. According to the researchers, the whey protein-derived ingredient may work via an angiotensin converting enzyme (ACE)-inhibitory activity.

ACE inhibitors work by inhibiting the conversion of angiotensin I to the potent vasoconstrictor, angiotensin II, thereby improving blood flow and blood pressure.

Resources:
NutraIngredients August 5, 2009
Nutrition Journal July 22, 2009; 8:34

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Featured

What Makes Laughter the Best Medicine?

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Laughter has a real beneficial effect on your physical health, according to research. In the study, subjects were observed as they watched both serious movies and comedies. During the comedies, their arteries dilated and their blood pressure dropped, suggesting that laughter can in fact be a powerful medicine indeed.

The study looked at 20 healthy participants with an average age of 33. The results showed for the first time that laughter is linked to healthy function of blood vessels. It appears to cause the endothelium, which is the tissue that forms the inner lining of blood vessels, to dilate or expand in order to increase blood flow.

The study also showed that the opposite effect occurred when the subjects watched suspenseful films, suggesting a link between mental stress and the narrowing of blood vessels.

A separate study also found that viewing a humorous film may be helpful for the study and treatment of local IgE production and allergy in the reproductive tract.

You may click to learn more

Resources:

Finding Dulcinea April 1, 2009
Journal Psychosomatic Research February 2009; 66(2):173-5

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Diagnonistic Test

Venous Ultrasound of the Legs (Lower Extremity Doppler)

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Definition:
This type of ultrasound shows if there is a blockage in a leg vein. Such blockages are usually caused by blood clots, which can be dangerous and even lifethreatening if they break loose and travel through the blood to the lungs. If you have pain or swelling in one leg, your doctor may order an ultrasound to determine whether your symptoms are caused by a blockage.

Click for the picture

The importance of the Venous Doppler examination of the lower extremities cannot be underestimated. Careful mapping of the lower extremity venous system prior to treatment is essential to a good clinical outcome. While many patients present with large, clinically obvious bulging varicose veins other individuals may have significant “silent” large vein disease (reflux), which can only be detected by Doppler vein mapping. Venous Doppler not only provides a detailed picture of your venous system, but can show abnormal direction blood flow (reflux) in diseased veins. Successful treatment of leg veins requires accurate diagnosis with treatment of abnormal large veins followed by touch-up treatment of smaller veins…………...click & see

An example of a Venous Doppler procedure is a scan which shows the vein with the blood flow direction indicated by the colored space inside the vein wall. The surrounding tissues look like images on weather radar. When the venous duplex test is performed, multiple pictures are taken to document the status of the vein and to select the optimal treatment plan for your veins. Venous Doppler is also performed at the time of Endovenous Laser Treatment as well as in follow up after EVLT

How to prepare for the test?
No preparation is necessary.

What happens when the test is performed?
After squirting some clear jelly onto the inside of one of your thighs to help the ultrasound sensor slide around easily, a technician or doctor places the sensor against your skin. Once it’s in place, an image appears on a video screen, and the technician or doctor moves the sensor up and down along your leg – from the groin to the calf – to view the veins from different angles. The examiner presses the sensor into your skin firmly every few inches to see if the veins change shape under pressure. He or she then checks your other leg in the same way. As the machine measures the blood flowing through a vein, it makes a swishing noise in time with the rhythm of your heartbeat. This test usually takes 15-30 minutes.Most people don’t feel any discomfort, but if your leg was swollen and sensitive to the touch before the test, the pressure of the sensor might cause some tenderness.

Risk Factors:
There are no risks.
Must you do anything special after the test is over?
Nothing.

How long is it before the result of the test is known?
A radiologist reviews a videotape of your ultrasound and checks for signs of blockages in the veins.Your doctor should receive a report within a few hours to a day.

Resources:
https://www.health.harvard.edu/fhg/diagnostics/venous-ultrasound-of-the-legs.shtml
http://www.amarillovein.com/AboutUltrasound.php

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Diagnonistic Test

Venous Ultrasound of Upper & Lower Extremity Arterial Doppler Studies

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Introduction:
The Arterial Doppler ultrasound uses sound waves at a frequency that is higher than humans are able to hear to produce images on a monitor for the purpose of evaluating the arterial blood flow to the upper extremities (arms) and lower extremities (legs).

CLICK & SEE

This type of ultrasound shows if there is a blockage in arm orĀ  leg vein. Such blockages are usually caused by blood clots, which can be dangerous and even lifethreatening if they break loose and travel through the blood to the lungs. If you have pain or swelling in one leg, your doctor may order an ultrasound to determine whether your symptoms are caused by a blockage.

It is used to evaluate:
*Numbness and tingling sensations in the hands, arms, feet and legs
*Sensation of fatigue and heaviness in the arms and legs
*To investigate the possibility of thoracic outlet syndrome.

Procedure:

For the Arterial Doppler exam a blood pressure cuff is applied to each of the arms and legs and a pressure is recorded for each extremity cuff. The pulse is also taken and recorded for each of the extremities. The patient may then be exercised and blood pressure recordings repeated or an ultrasound may be performed to assess the arteries for the location and the amount of narrowing.

When evaluating for thoracic outlet syndrome of the upper extremities, the patient will be asked to perform a series of arm movements while recordings are documented.

The Arterial Doppler studies take approximately 60-90 minutes.

After squirting some clear jelly onto the inside of one of your arms or thighs to help the ultrasound sensor slide around easily, a technician or doctor places the sensor against your skin. Once it’s in place, an image appears on a video screen, and the technician or doctor moves the sensor up and down along your leg – from the groin to the calf – to view the veins from different angles. The examiner presses the sensor into your skin firmly every few inches to see if the veins change shape under pressure. He or she then checks your other leg in the same way. As the machine measures the blood flowing through a vein, it makes a swishing noise in time with the rhythm of your heartbeat. This test usually takes 15-30 minutes.Most people don’t feel any discomfort, but if your leg was swollen and sensitive to the touch before the test, the pressure of the sensor might cause some tenderness.

How do You prepare for the test? No preparation is necessary.

Risk Factors: There are no risks
How long is it before the result of the test is known?
A radiologist reviews a videotape of your ultrasound and checks for signs of blockages in the veins.Your doctor should receive a report within a few hours to a day.

Resources:
https://www.health.harvard.edu/fhg/diagnostics/venous-ultrasound-of-the-legs.shtml
http://www.advanceddiagnosticimagingpc.com/vascular/extremity.htm

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Diagnonistic Test

Arterial Blood Flow Studies of the Legs (Segmental Doppler Pressures)

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What is the test?
People who have leg pain when exercising may need an evaluation to make sure they have normal blood flow through their leg arteries. Normally blood pressure is similar whether it is measured in the legs or in the arms. If blood pressure is lower in the legs, it usually means that cholesterol buildup inside the leg arteries is interfering with circulation. By taking accurate blood pressure measurements at different locations along your legs, your doctors can determine if you have any arterial narrowing and, if so, where.

click to see the pictures…..…(01)..(1).……..(2)…..….(3)..….…(4)..…….(5).…....(6).…...(7).….

In order to get accurate blood pressure measurements, your doctor uses a technique called Doppler ultrasound. Doppler ultrasound is a painless way to detect blood flowing through a small artery. It uses sound waves and a type of sonar detection system to make noise when blood flow is detected. For arterial studies of the legs (called segmental Doppler pressures), Doppler ultrasound is used in place of the stethoscope that doctors usually use when taking blood pressures.

Why This Test is Done:
Blood flow studies measure the flow of blood through arteries and veins as well as blood pressure. Two methods for performing blood flow studies include a duplex study (using Doppler ultrasound) and plethysmography. The duplex study measures blood flow through the veins and arteries. Plethysmography uses sophisticated blood pressure readings to measure changes in blood volume in a specific blood vessel.

Fast Facts:
*Blood flow studies help researchers find treatments for exercise intolerance in heart failure patients.

* Arterial blood flow studies of the legs (segmental Doppler pressures) help physicians diagnose leg pain.

* Blood flow studies improve the diagnosis and treatment of epicondylitis, which is commonly known as tennis elbow

Click to learn more

What is Peripheral Artery Disease(PAD)

What happens when the test is performed?
You lie on a table and a technician or doctor wraps blood pressure cuffs around one of your legs in four or five locations (including the thigh, calf, and ankle). He or she then squirts some clear jelly onto your skin to help the Doppler sensor (which resembles a wand or pen) slide around easily and to help conduct sound waves through your skin.

Each blood pressure cuff is inflated two times. The first time, the cuff is only inflated part way so that it exerts a gentle pressure on your leg. The cuff sends information to a computer about the size of your leg and how elastic your arteries seem to be as the pressure is increased. A wavy line that signifies your blood flow appears on a video screen.

The second time, each cuff is inflated to exert more pressure on your leg. This temporarily cuts off circulation in the leg. Many patients briefly experience some cramping pain in the calf or thigh (similar to the sensation you experience when a blood pressure cuff is inflated around your arm). As the cuff is deflated, the doctor places a Doppler sensor against your foot to detect the moment when blood flow starts up again. (When it does, you will hear a noise that sounds like your heartbeat.) Checking the air pressure of the deflating cuff at this time shows the leg blood pressure.

After all the cuffs on one side have been tested, the other leg is checked in the same way. For comparison, you also have your blood pressure checked in each arm using the Doppler Technique. The whole test usually takes 45 minutes.

Some patients have their leg pressures checked both before and after exercise. If this is the case for your test, you are asked to walk on a treadmill for a short time and then have the test again afterward. The exercise version of this test takes more time.

How do you prepare for the test?
You may want to wear shorts for this exam, and your feet should be bare during the test. If you are not wearing shorts, you may have to change into a hospital gown.

Risk Factors: There are no risks.

Must you do anything special after the test is over?
The jelly will be wiped off. You will have no side effects from the test.

How long is it before the result of the test is known?
Your doctor should receive a formal report within a few days.

Resources:
https://www.health.harvard.edu/fhg/diagnostics/arterial-blood-flow-studies-of-the-legs.shtml
http://organizedwisdom.com/Blood_Flow_Studies

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