Syncope during pregnancy in a patient with permanent cardiac pacemaker, due to increased pacing threshold.

authors:

avatar Mohammad Ali Akbarzadeh 1 , * , avatar Morteza Safi 1 , avatar Isa Khaheshi 1 , avatar Negar Bahrololoumi Bafruee 2

Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran

how to cite: Akbarzadeh M A, Safi M, Khaheshi I , Bahrololoumi Bafruee N. Syncope during pregnancy in a patient with permanent cardiac pacemaker, due to increased pacing threshold.. Int J Cardio Pract. 2016;1(2):e130034. doi: 10.21859/ijcp-010207.

Abstract

A 22-year-old pregnant woman referred with syncope due to pacemaker malfunction. During the second trimester of pregnancy, the right ventricular (RV) lead pacing threshold increased and led to early generator depletion. We believe that this might happen due to lead micro-dislodgement or less probably effect of hormonal changes during pregnancy on electrode-myocardium interface.

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