Key result
Premature atrial contractions trigger torsades de pointes in Takotsubo cardiomyopathy with marked QT prolongation.
Why the study?
Some patients with Takotsubo cardiomyopathy develop torsades de pointes, which can be fatal, but mechanisms are not well described.
Case Report (n=1)
Premature atrial contractions can initiate torsades de pointes in patients with Takotsubo cardiomyopathy and acquired long QT syndrome due to electrolyte imbalances.
Raises awareness for PAC-triggered TdP in Takotsubo with QT prolongation and electrolyte imbalance; remains hypothesis-generating from a single case.
Although the prognosis for patients with stress-induced cardiomyopathy (Takotsubo cardiomyopathy) is relatively good, some patients with this syndrome develop torsades de pointes, which can be fatal. The present report describes a patient with Takotsubo cardiomyopathy and torsades de pointes induced by premature atrial contraction associated with QT interval prolongation, hypokalemia and hypomagnesemia.
No takes yet. Share an insight, caveat, or question.
Kawano et al. (2010) conducted a case report in Takotsubo cardiomyopathy with QT prolongation (n=1). Premature atrial contraction was evaluated. Premature atrial contractions induced torsades de pointes in a patient with Takotsubo cardiomyopathy, QT prolongation, hypokalemia, and hypomagnesemia.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: