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sick sinus syndrome

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Medical Dictionary

Main Entry: sick sinus syndrome
Function: noun
: a cardiac disorder typically characterized by alternating tachycardia and bradycardia
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

sick sinus syndrome n.
Chaotic atrial activity characterized by an abnormally slow heartbeat punctuated by recurring ectopic beats and periods of abnormally rapid heartbeat.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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