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The heart rate may be rapid or slow and may be irregular. An ECG is done to check for irregular heart beats.
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An electrocardiogram(ECG) is a test that records the electrical activity of the heart.
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Electrocardiography is a commonly used, noninvasive procedure for recording electrical changes in the heart. The record, which is called an electrocardiogram(ECG or EKG), shows the series of waves that relate to the electrical impulses that occur ...
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Detailed information on electrocardiogram, including how the EKG/ECG is performed and what happens after the procedure
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The electrocardiography unit, also called an electrocardiograph, is an apparatus that indirectly measures the heart''s electrical activity and records it as a graphic tracing.Electrocardiography is used to detect heart-function abnormalities. It in...
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Did you know that electrical currents flow throughout your body? Because the strongest of these travels through your heart, doctors are able to monitor your heart by placing electrical sensors on the surface of your skin.
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The ECG (also known as EKG) is a test that records electrical signals from your heart onto a paper strip. The pattern of these signals can tell the doctor whether your heart is normal, under stress, or experiencing electrical problems, strain, or damage.
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The electrocardiogram(ECG) displays important information about the heart, including the occurrence of a heart attack or lack of oxygen, whether conduction of the heartbeat is disturbed, or its rate or rhythm altered. It is useful as a rapid indic...
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Detailed information on an electrocardiogram (EKG) procedure, including how the procedure is performed, reasons for the procedure, and pre- and post-evaluation instructions
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The Harvard Health Letter celebrates its 30th anniversary this year. In the first of a series, the Health Letter takes a look back at three decades in medicine.
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During a physical examination, a health care provider studies a patient''s body to determine the presence or absence of physical problems.
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The digoxin test checks to see how much of the medication digoxin you have in your blood. Digoxin is a type of medicine called a cardiac glycoside, which is used to treat certain heart problems.Blood is typically drawn from a vein, usually from th...
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Creatinine is a breakdown product of creatine, which is an important part of muscle. A serum creatinine test measures the amount of creatinine in the blood.
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Creatine phosphate is used in skeletal muscle contraction.The creatinine test is used to diagnose impaired kidney function and to determine renal(kidney) damage.A diet high in meat content can cause transient elevations of serum creatinine. Some d...
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A serum magnesium test is a measurement of how much magnesium there is in the blood.Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine(antiseptic).
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This test measures the amount of potassium in the blood. Potassium(K+) helps nerves and muscles communicate.
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BUN stands for blood urea nitrogen. Urea nitrogen is what forms when protein breaks down.A test can be done to measure the amount of urea nitrogen in the blood.Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand.
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The blood urea nitrogen(BUN) test measures the level of urea nitrogen in a sample of the patient''s blood. Urea is a substance that is formed in the liver when the body breaks down protein.
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