Key result
Anderson-Tawil syndrome was identified as an unusual etiology for bidirectional ventricular tachycardia, a rare arrhythmia typically caused by digitalis toxicity.
Highlights Anderson-Tawil syndrome as a rare etiology for bidirectional ventricular tachycardia, which is more commonly associated with digitalis toxicity.
Consider Anderson-Tawil syndrome in unexplained bidirectional VT; case report extends differential but leaves open validation in larger cohorts.
Bidirectional ventricular tachycardia (BDVT) is a rare form of ventricular arrhythmia, characterized by changing QRS axis of 180 degrees. Digitalis toxicity is considered as commonest cause of BDVT; other causes include aconite toxicity, myocarditis, myocardial infarction, metastatic cardiac tumour and cardiac channelopathies. We describe a case of BDVT in a patient with Anderson-Tawil syndrome.
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Chakraborty et al. (2015) studied this question. Anderson-Tawil syndrome was identified as an unusual etiology for bidirectional ventricular tachycardia, a rare arrhythmia typically caused by digitalis toxicity.
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