Acquired long QT syndrome: as risky as congenital long QT syndrome?
Why the study?
Does ICD therapy provide benefit in survivors of sudden cardiac arrest with acquired long QT syndrome?
Population
43 patients with acquired long QT syndrome who were implanted with an implantable cardioverter defibrillator…
Design
Editorial
Follow-up
mean 84 months
Authors
Discussion
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Member takes
Implication
ICD therapy may offer potential benefit in a subgroup of cardiac arrest survivors with acquired LQTS due to recurrent life-threatening tachyarrhythmias, though inappropriate shocks and lack of controls limit broader application.
Structured PICO
Does ICD therapy provide benefit in survivors of sudden cardiac arrest with acquired long QT syndrome?
P
Population
43 patients with acquired long QT syndrome who were implanted with an implantable cardioverter defibrillator (ICD) following a cardiac arrest
I
Intervention
Implantable cardioverter defibrillator (ICD) therapy
O
Outcome
Appropriate ICD shockshard clinical
ICD therapy may offer potential benefit in a subgroup of cardiac arrest survivors with acquired LQTS due to recurrent life-threatening tachyarrhythmias, though inappropriate shocks and lack of controls limit broader application.
Limitations
- Lack of controls
- Highly selected group of cardiac arrest survivors
- Potential overtreatment due to short detection times
- Inadequate pacing to prevent pause-dependent TdP
Cite This Study
Wong et al. (2011) studied this question.