NYMC Faculty Publications

Transient Left Bundle Branch Block in the Setting of Hyperkalemia

Author Type(s)

Faculty

DOI

10.7759/cureus.16602

Journal Title

Cureus

First Page

16602

Last Page

16602

Document Type

Case Report

Publication Date

7-24-2021

Department

Medicine

Abstract

Hyperkalemia is a potentially life-threatening condition that can lead to sudden cardiac death. We report a case of transient left bundle branch block (LBBB) pattern on an electrocardiogram (EKG) secondary to hyperkalemia in a patient with a history of end-stage renal disease. A 48-year-old female presented to the emergency department (ED) with chief complaints of weakness and shortness of breath after a missed hemodialysis session. A 12-lead EKG in the ED showed the LBBB pattern with left axis deviation, prolonged PR interval, and peaked T-waves in the precordial leads. The initial serum potassium level was 8.5 mEq/L. EKG changes resolved after correcting the serum potassium level.

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