Dr. William D. Knopf, MD

Answers

What is the ABO blood group system?

The ABO blood group system is used to group human blood into different types, based on the

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12/31/1969

Should I see a doctor about varicose veins?

Has the varicose vein become swollen, red, or very tender or warm to the touch?

  • If
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12/31/1969

How can illegal drug use affect schizophrenia?

Taking illegal drugs and drinking too much alcohol are problems for some people with

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12/31/1969

Are any risks associated with donating peripheral blood stem cells?

Apheresis usually causes minimal discomfort. During apheresis, the person may feel

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12/31/1969

How do I follow the DASH eating plan?

The DASH eating plan requires no special foods and has no hard-to-follow recipes. It simply

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12/31/1969

What are the risks of carotid ultrasound?

There are no risks linked to having a carotid ultrasound, because the test uses harmless sound

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12/31/1969

What does a carotid ultrasound show?

A carotid ultrasound can show whether plaque buildup has narrowed one or both of your carotid

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12/31/1969

How is a life lived with carotid artery disease?

If you have carotid artery disease, you can take steps to stop it from getting worse. Make

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12/31/1969

How can carotid artery disease be prevented?

Taking action to control your risk factors can help prevent or delay carotid artery disease and

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12/31/1969

What are the risks of an electrocardiogram?

An electrocardiogram (EKG) has no serious risks. It's a harmless, painless test that detects the

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12/31/1969

What does an electrocardiogram show?

Many heart problems change the heart's electrical activity in distinct ways. An

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12/31/1969

What should I expect before an electrocardiogram?

No special preparation is needed for an electrocardiogram (EKG). Before the test, let your

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12/31/1969

Who needs an electrocardiogram?

Your doctor may recommend an electrocardiogram (EKG) if you have signs or symptoms that suggest

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12/31/1969

What are the alternative names for electrocardiogram?

An electrocardiogram also is called EKG or ECG. Sometimes the test is called a 12-lead EKG or

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12/31/1969

What are the risks of echocardiography?

Transthoracic and fetal echocardiography (echo) has no risks. These tests are safe in adults,

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12/31/1969