Key result
Valsalva manoeuvre and cold pressor testing precipitated ventricular arrhythmias in a case of long QT syndrome, which were then abolished by acute administration of propranolol.
Why the study?
Does acute administration of propranolol abolish ventricular arrhythmias precipitated by reflex testing in a patient with long QT syndrome?
Does acute administration of propranolol abolish ventricular arrhythmias precipitated by reflex testing in a patient with long QT syndrome?
Reflex testing can precipitate ventricular arrhythmias in long QT syndrome, which can be acutely abolished by propranolol.
Answers are grounded in this paper and cite their sources.
Autonomic reflex testing may trigger arrhythmias in long QT syndrome; single case leaves open propranolol's therapeutic role.
Ventricular arrhythmias were precipitated with reflex testing in a case of the long QT syndrome and were abolished after acute administration of propranolol.
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Rubin et al. (1979) studied this question. Valsalva manoeuvre and cold pressor testing precipitated ventricular arrhythmias in a case of long QT syndrome, which were then abolished by acute administration of propranolol.
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