Distinguishing Acute Motor Axonal Neuropathy from Hypokalemia Induced Paralysis: Add 15 Minutes for an Exercise Test

Şefik Evren Erdener; F Gökçem Yıldız; Ezgi Yetim Arsava; Çağrı Mesut Temuçin

doi:10.4274/tnd.56588

Şefik Evren Erdener¹, F Gökçem Yıldız², Ezgi Yetim Arsava¹, Çağrı Mesut Temuçin¹

¹Hacettepe University Faculty of Medicine, Department of Neurology, Ankara, Turkey
²Hacettepe University Institute of Neurological Sciences and Psychiatry, Ankara, Turkey

Keywords: Acute motor axonal neuropathy, hypokalemic periodic paralysis, hypokalemia, exercise test, nerve conduction studies

Abstract

We evaluated the reversible electrophysiologic abnormalities of two cases of hypokalemia paralysis (HypoPP) because of its similar findings in acute motor axonal neuropathy (AMAN). Nerve conduction studies (NCS), repetitive nerve stimulation, and exercise tests were performed in both patients. Adding a 15 minute-exercise test to routine NCS may help distinguish AMAN from HypoPP.