Document Detail

Electrocardiogram in Hyperkalemia: electrocardiographic pattern of anteroseptal myocardial infarction mimicked by hyperkalemia-induced disturbance of impulse conduction.
MedLine Citation:
PMID:  971008     Owner:  NLM     Status:  MEDLINE    
In a patient with renal failure and shortness of breath, Q waves transiently appeared in the right precordial leads of the electrocardiogram (ECG) during episodes of hyperkalemia, without a substantial change in mean electrical axis. With restoration of the plasma potassium level to normal, R waves reappeared in these leads. It is concluded that the transient development of Q waves in the right precordial leads during hyperkalemia resulted from a hyperkalemia-induced conduction disturbance. Hyperkalemia, by affecting conduction in Purkinje fibers of ventricular muscle, or both, disturbed the normal sequence of septal and anterior wall depolarization and resulted in an ECG pattern that mimicked that of anteroseptal myocardial infarction. Clinically, hyperkalemia-induced conduction disturbances of this type must be included in the differential diagnosis of the ECG that suggests an anteroseptal myocardial infarction.
M F Arnsdorf
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Archives of internal medicine     Volume:  136     ISSN:  0003-9926     ISO Abbreviation:  Arch. Intern. Med.     Publication Date:  1976 Oct 
Date Detail:
Created Date:  1976-12-01     Completed Date:  1976-12-01     Revised Date:  2007-08-24    
Medline Journal Info:
Nlm Unique ID:  0372440     Medline TA:  Arch Intern Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1161-3     Citation Subset:  AIM; IM    
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MeSH Terms
Diagnostic Errors
Evoked Potentials
Heart Conduction System / physiopathology
Heart Septum / physiopathology
Hyperkalemia / physiopathology*
Kidney Failure, Chronic / physiopathology
Myocardial Infarction / physiopathology*
Neural Conduction
Pericardial Effusion
Peritoneal Dialysis
Potassium / blood
Reg. No./Substance:

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

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