| Relation of prognosis in sick sinus syndrome to age, conduction defects and modes of permanent cardiac pacing. | |
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MedLine Citation:
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PMID: 2316455 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A large population of sick sinus syndrome (SSS) patients was analyzed to determine whether age of patients, presence of conduction disturbances and mode of permanent pacing are related to the occurrence of supraventricular tachyarrhythmias, cerebral embolism and cardiac mortality. Three hundred thirty-nine patients permanently paced (135 AAI, 79 DDD, 125 VVI) because of SSS were followed for a mean period of 5 years (range 2 to 10). Patients were divided into 4 groups according to age (less than 70 or greater than 70 years) and the presence or absence of an associated conduction disturbance. Sixty-eight percent of VVI, 55% of AAI and 40.5% of DDD patients were greater than 70 years of age. In the VVI and DDD groups a conduction disturbance was present in 67 of 204 (33%) patients; conduction disturbances were more common in patients greater than 70 years old (46 of 111, 41%) than in those less than 70 years old (21 of 93,22%). The Wenckebach threshold (greater than 140 beats/min) remained unchanged during the follow-up period in 82% of AAI patients. In 9% of these patients, the Wenckebach threshold showed some degree of deterioration, but only in 2 patients was it less than 100 beats/min (1.5%). Spontaneous second-degree atrioventricular block was observed in 7 patients (5%); it disappeared in 6 of these patients when drug therapy was discontinued.(ABSTRACT TRUNCATED AT 250 WORDS) |
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Authors:
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M Santini; G Alexidou; G Ansalone; G Cacciatore; R Cini; G Turitto |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: The American journal of cardiology Volume: 65 ISSN: 0002-9149 ISO Abbreviation: Am. J. Cardiol. Publication Date: 1990 Mar |
Date Detail:
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Created Date: 1990-04-20 Completed Date: 1990-04-20 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0207277 Medline TA: Am J Cardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 729-35 Citation Subset: AIM; IM |
Affiliation:
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Electrophysiology Laboratory and Pacemaker Center, S. Camillo Hospital, Rome, Italy. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Age Factors Aged Atrial Fibrillation / etiology Cardiac Pacing, Artificial / methods Cerebrovascular Disorders / etiology Follow-Up Studies Heart Block / etiology Humans Middle Aged Pacemaker, Artificial* Prognosis Sick Sinus Syndrome / complications, mortality*, therapy Tachycardia, Supraventricular / etiology Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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