Nearly fatal ventricular arrhythmia following pacemaker implantation in a young female with complete heart block

This case concerns a 24‐year‐old female who developed malignant ventricular tachyarrhythmia a few weeks after pacemaker implantation for complete heart block. Apparently, right ventricular pacing caused significant repolarization abnormalities in both native and paced rhythms with marked QT prolonga...

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Bibliographic Details
Published in:Journal of arrhythmia 2019-10, Vol.35 (5), p.766-769
Main Authors: Ali, Hussam, Lupo, Pierpaolo, Foresti, Sara, De Ambroggi, Guido, Mantovani, Riccardo, De Lucia, Carmine, Passarelli, Ilaria, De Ambroggi, Luigi, Cappato, Riccardo
Format: Article
Language:English
Subjects:
Cardiac patients
Case Report
Case Reports
complete heart block
Disease susceptibility
Heart
Heart block
long QT
pacemaker
Tachycardia
ventricular repolarization
ventricular tachyarrhythmia
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Summary:This case concerns a 24‐year‐old female who developed malignant ventricular tachyarrhythmia a few weeks after pacemaker implantation for complete heart block. Apparently, right ventricular pacing caused significant repolarization abnormalities in both native and paced rhythms with marked QT prolongation and substantial electrical instability. This case highlights other intriguing phenomena in the puzzle of cardiac repolarization and how pacing therapy may alter this complex process providing arrhythmic substrate in vulnerable subjects. Though such arrhythmic events are clinically rare, vulnerable patients or with suspected myocardial disease that may cause QT prolongation should be carefully followed in the course of pacing therapy.
ISSN:1880-4276
1883-2148
DOI:10.1002/joa3.12220