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Related to Slow pulse: bradycardia


see arrhythmiaarrhythmia
, disturbance in the rate or rhythm of the heartbeat. Various arrhythmias can be symptoms of serious heart disorders; however, they are usually of no medical significance except in the presence of additional symptoms.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



decrease in frequency of heart contractions to less than 60 beats per minute.

Bradycardia may be found as a normal, constitutionally conditioned phenomenon in perfectly healthy persons, in well-trained athletes, and as one of the symptoms in many diseases. More often, bradycardia is observed as a result of organic disturbances of auriculoventricular conductivity—heart blockage, myocardial infarction, and inflammatory (infectious or toxic) diseases of the heart muscle. Complete blockage of the heart with a pulse frequency of 30–40 beats per minute or less threatens brain complications: loss of consciousness, convulsions, and cessation of heart activity. Prophylaxis and treatment are directed toward removal of the cause.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


Slow heart rate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
TN-1 responds to stimuli with slow pulse rates (<20 Hz), while no responses occur to faster pulse rates.
A fast, weak or irregular beat is a symptom of hyperthermia (overheating), while a slow pulse may indicate low blood pressure or thyroid problems.
Symptoms: 6 You're in your early 70s and your doctor has mentioned you have a slow pulse, if you hurry you get a pain in your chest (angina) and you have to hu che stop.
There were meetings, two or three times a week, in the Workmen's Hall and then the slow pulse of life quickened.
Symptoms include fatigue, feeling cold, dry skin, constipation, a slow pulse rate and low blood pressure.
A normal pulse is regular and strong - any abnormality, such as a slow pulse or a fast, weak pulse, is a cause for concern.
Q My brother has quite a slow pulse, averaging 39-45 beats per minute.
My brother has been told he has quite a slow pulse, averaging, 39-45 BPM.