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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «H»:

  1. Heart rehab Heart rehab
    Heart rehab: See: Cardiac rehabilitation....
  2. Heart rhythm disorders Heart rhythm disorders
    Heart rhythm disorders: Abnormal rhythm of the heartbeat due to irregularities in transmission of the electrical signals that normally control heart rate and rhythm. Also known as arrhythmias. With an arrhythmia, the heartbeats may be irregular or too slow (bradycardia), too rapid (tachycardia), ...
  3. Heart septum Heart septum
    Heart septum: The septum of the heart is the dividing wall between the right and left sides of the heart. That portion of the septum that separates the two upper chambers (the right and left atria) of the heart is termed the atrial (or interatrial) septum while the portion of the septum that lies be...
  4. Heart test, EPS Heart test, EPS
    Heart test, EPS: ElectroPhysiologic Study of the heart, a test of the electrical conduction system of the heart (the system that generates the heart beat). EPS is done by threading thin plastic tubes (catheters) into a vein where the leg connects to the abdomen. A local anesthetic is given as well...
  5. Heart transplant Heart transplant
    Heart transplant: A surgical procedure in which a diseased heart is replaced with a healthy heart from a deceased person. The world's first heart transplant was done on December 3, 1967 by South African surgeon Christiaan Bernard (1922-2001). The recipient was Louis Washkansky, a grocer. The ...
  6. Heart valves Heart valves
    Heart valves: There are four heart valves. All are one-way valves. Blood entering the heart first passes through the tricuspid valve and then the pulmonary valve. After returning from the lungs, the blood passes through the mitral (bicuspid) valve and exits via the aortic valve. ...
  7. Heart ventricle Heart ventricle
    Heart ventricle: One of the two lower chambers of the heart. The right ventricle is the chamber that receives blood from the right atrium and pumps it into the lungs via the pulmonary artery while the left ventricle is the chamber that receives blood from the left atrium and pumps it into the syste...
  8. Heart, artificial Heart, artificial
    Heart, artificial: A manmade heart. An artificial heart was temporarily implanted in 1969 by Denton Cooley in Houston, Texas. Complete replacement of the heart by an artificial heart was done in 1982 by William DeVries at Salt Lake City, Utah. Barney Clark was the patient. ...
  9. Heart, left Heart, left
    Heart, left: The heart is composed functionally of two hearts - the right heart and the left heart. The left heart consists of the left atrium which receives oxygenated blood from the lung and the left ventricle which pumps it out to the body under high pressure....
  10. Heart, Lung, and Blood Institute, National Heart, Lung, and Blood Institute, National
    Heart, Lung, and Blood Institute, National (NHLBI): One of the National Institutes of Health in the U.S., the NHLBI's mission is to "provide leadership for a national research program in diseases of the heart, blood vessels, lungs, and blood and in transfusion medicine through support of inn...
  11. Heart, right Heart, right
    Heart, right: The heart is composed functionally of two hearts - the right heart and the left heart. The right heart consists of the right atrium which receives deoxygenated blood from the body and the right ventricle which pumps it to the lungs. The right heart is a low pressure system....
  12. Heart-hand syndrome Heart-hand syndrome
    Heart-hand syndrome: See: Holt-Oram syndrome....
  13. Heart-lung machine Heart-lung machine
    Heart-lung machine: A machine that does the work both of the heart (pump blood) and the lungs (oxygenate the blood). Used, for example, in open heart surgery. Blood returning to the heart is diverted through the machine before returning it to the arterial circulation. John H. Gibson invented t...
  14. Heartburn Heartburn
    Heartburn: An uncomfortable feeling of burning and warmth occurring in waves rising up behind the breastbone (sternum) toward the neck. It is usually due to gastroesophageal reflux disease (GERD), the rise of stomach acid back up into the esophagus. Heartburn has nothing whatsoever to do with the ...
  15. Heartworm Heartworm
    Heartworm: Dirofilaria immitis. A common parasite of dogs in many parts of the world that occurs in other animals, including cats, but rarely infects humans. The adult worms, which are up to 10 inches (25 cm) in length, typically live in the dog's pulmonary artery and right side of the heart. Infl...