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Case Report

Failure of Ventricular Capture and Pacemaker Exit Block Secondary to Moderate Hyperkalemia

Pau Alonso*, Raquel Lopez, Maria Jose Sancho-Tello, Ana Andres, Oscar Cano, Joaquin Osca and Jose Olague
Department of Cardiology, Electrophysiology Section, La Fe University Hospital, Valencia, Spain
Corresponding Author : Pau Alonso
Department of Cardiology
Electrophysiology Section, La Fe University Hospital
Partida de la Mar nº 15. Almàsser
Tel: 0034676037149
E-mail: pau_i_au@hotmail.com
Received: October 07, 2015; Accepted: November 18, 2015; Published: November 28, 2015
Citation: Alonso P, Lopez R, Sancho-Tello MS, Andres A, et al. (2015) Failure of Ventricular Capture and Pacemaker Exit Block Secondary to Moderate Hyperkalemia. Arrhythm Open Access 1:102. doi:10.4172/atoa.1000102
Copyright: © 2015 Alonso P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

An 81-year-old woman was admitted to our institution with bradicardia, weakness and presyncope. At admission physical examination revealed a pulse rate of 42 per minute, blood pressure of 95/50 mmHg, and an oxygen saturation of 93% on room air. The interrogation of the device showed a correct ventricular sensing and a threshold for ventricular pacing of 6.5 V at 1 ms pulse width. Analytic test showed a creatinine 3.78 mg/dl, Urea 187 mg/dl, sodium 133 mEq/L, potassium 6.2 mEq/L, and pH 7.37. Our patient showed a moderate acute hyperkalemia, which caused pacemaker exit block and capture failure.
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