Cardiology Research, ISSN 1923-2829 print, 1923-2837 online, Open Access
Article copyright, the authors; Journal compilation copyright, Cardiol Res and Elmer Press Inc
Journal website https://www.cardiologyres.org

Case Report

Volume 3, Number 1, February 2012, pages 34-36


Failure to Treat Torsades de Pointes

Figure

Figure 1.
Figure 1. Temporary transvenous pacemaker set at 100 bpm. The patient’s intrinsic rate overrides the paced rate (black arrow). Four consecutives intrinsic beats at 115 bpm with a QTc-interval of 602 ms triggered recurrent TdP (white arrow).

Table

Table 1. Possible Causes for Failure to Treat TdP
 
FactorMechanisms
Maintenance of aggravating drugsQT-interval prolongation
Uncorrected electrolyte disturbanceQT-interval prolongation
IschemiaIncreased dispersion of repolarization
Uncorrected bradycardiaQT-interval prolongation
Inadvertent failure of pacing by inappropriate rate settingIntrinsic rate will prevail with no resolution of QT prolongation