A case of sporadic hypokalemic Periodic Paralysis with sinus Bradycardia

M Masomi; HA Ebrahimi

Journal of Kermanshah University of Medical Sciences

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A case of sporadic hypokalemic Periodic Paralysis with sinus Bradycardia

Author(s):

M Masomi^1,*,

HA Ebrahimi¹

1Iran

Journal of Kermanshah University of Medical Sciences:Vol. 7, issue 3; e81265

Published online:Dec 19, 2003

Article type:Case Report

Received:Jul 10, 2003

Accepted:Dec 05, 2003

How to Cite:M MasomiHA EbrahimiA case of sporadic hypokalemic Periodic Paralysis with sinus Bradycardia.J Kermanshah Univ Med Sci.7(3):e81265.

Abstract

Background & Objective: Periodic Paralyses are a group of rare disorders that cause temporary episodes of muscle weakness or paralysis. Hypokalemic periodic paralysis usually is transmitted by an autosomal dominant trait with more penetration in men. Hypokalemic periodic paralysis may be secondary to thyrotoxicosis, hyperparathyroidism, drug toxicity and potassium losing states. Sporadic form of disease is rare and appears in male gender.

Case report: This case is a 34 years old man with history of periodic paralysis.

There was hypokalemia (k=1.98meq/lit), but other laboratory tests and paraclinical data were normal. First electrocardiogram had ST segment depression, negative T wave and positive U wave with sinus bradycardia (heart rate was 45 beats per minute). Changes Discussion: of ST segment, T wave and U wave are common but sinus bradycardia is rare. Limb paralysis and electrocardiogram changes disappeared with ingestion of 6 gram KCL. Therefore in hypokalemic periodic paralysis cardiac arrhythmia can appear as sinus bradycardia that disappears with administration of oral potassium. Cardiac evaluations using ECGs and monitoring should be performed on all hospitalized patients with hypokalemic periodic paralysis .

Keywords

Hypokalemic periodic paralysis

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