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(păl'pĭtā`shən), abnormal heartbeat that is often associated with a sensation of fluttering or thumping. The normal heartbeat is not noticeable to the individual. Palpitation may be a symptom of organic heart disease or of other body disorders such as an overactive thyroid gland or anemia. In healthy persons palpitation can be brought on by undue exertion, shock, excitement, or stimulants.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a heart action that produces a disagreeable awareness in those suffering from various diseases, including diseases of the cardiovascular, nervous, and endocrine systems, as well as in healthy individuals under considerable physical and emotional strain. Palpitation is primarily associated with an increase in the number of heart contractions per minute, for example, with overstrain or paroxysmal tachycardia. It is also associated with rhythmic disorders of contractility, including extrasystole and atrial fibrillation. Therapeutic measures and preventive treatment are determined by the causes of palpitation.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
But palpitations vary in what causes them and how serious they are - ranging from benign to a sign of a serious problem.
Common presenting symptoms are dizziness, palpitations, and syncope but in contrast to these ubiquitous complaints, sudden cardiac death remains an important public health concern.
Yet, women were more likely than men to report other associated symptoms of heart attack, such as indigestion, shortness of breath, palpitations or pain in the jaw, neck, or arms.
Charbel Abi Khalil, assistant professor of medicine and genetic medicine at WCM-Q, and consultant cardiologist at the Heart Hospital -- Hamad Medical Corporation, wrote a paper entitled 'Investigating palpitations, the role of Holter monitoring and loop recorders.'
slb n " Sam, who worked at his dad's CCTV business and was setting up his own firm, had been suffering heart palpitations for months before he died on December 17 last year.
All children above 5 years of age with history of intermittent palpitations and normal basic cardiovascular workup were enrolled.
He said: "Ryan was feeling some palpitations and was gasping for air.
In a hypertensive patient with a typical presentation consisting of palpitations and headache, and an ECG demonstrates VT or other tachyarrhythmias, a pheochromocytoma should be included in the differential diagnosis.
The students, aged between 13 and 17 years, were rushed to the hospital due to stomach pains, dizziness, palpitations and vomiting.
A 52 year old male physician in reasonably good health presented to the emergency room (ER) with several hours of sudden onset chest discomfort, palpitations, severe hypertension, and vomiting.
You may be inclined to check your heart rate the next time you have palpitations. A palpitation is a noticeably strong, fast or irregular heartbeat.