Document Detail


The relationship between serum potassium and cardiac arrhythmias following cardiac infarction in patients aged over 65 years.
MedLine Citation:
PMID:  7105798     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A retrospective analysis was performed of 405 patients, over the age of 65 years, who had been admitted with proven myocardial infarction to a coronary care unit, to investigate the relationship between the serum potassium level on admission and the incidence of cardiac arrhythmias. On admission, 173 (42.7%) patients had a serum potassium of less than 4.0 mmol/l. During the first 24 hours in hospital, 57% of all patients exhibited a disturbance of cardiac rhythm. The incidence of total arrhythmias was independent of the initial serum potassium level, but the mortality rate was 46.2% in those patients with a serum potassium less than 4.0 mmol/l while it was 34.5% in those with a potassium of 4.0 mmol/l or greater. Twelve patients with a serum potassium less than 4.0 mmol/l experienced at least one episode of ventricular fibrillation (6.9%), but only 1 patient with a serum potassium of 4.0 mmol/l or greater had this arrhythmia. The difference in incidence of this arrhythmia was highly significant (p less than 0.001). No patient who experienced ventricular fibrillation was on existing cardiac medication with either a diuretic, beta-adrenoreceptor blocking drug or digoxin. There was no significant difference in the occurrence of other cardiac arrhythmias between low and normal serum potassium groups.
Authors:
S R Reuben; R D Thomas
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Current medical research and opinion     Volume:  7     ISSN:  0300-7995     ISO Abbreviation:  Curr Med Res Opin     Publication Date:  1982  
Date Detail:
Created Date:  1982-10-21     Completed Date:  1982-10-21     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0351014     Medline TA:  Curr Med Res Opin     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  79-82     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Aged
Arrhythmias, Cardiac / blood*
Female
Heart Ventricles
Humans
Male
Myocardial Infarction / blood*
Potassium / blood*
Retrospective Studies
Chemical
Reg. No./Substance:
7440-09-7/Potassium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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