Why the study?
Does the magnitude of QT interval prolongation predict Torsade de pointes better than the mere presence of prolongation in patients with amisulpride overdose?
Does the magnitude of QT interval prolongation predict Torsade de pointes better than the mere presence of prolongation in patients with amisulpride overdose?
In the setting of amisulpride overdose, the absolute magnitude of QT prolongation is a more clinically useful predictor of Torsade de Pointes than simply identifying the presence of a prolonged QT interval.
May support magnitude of QT prolongation over presence alone for TdP risk assessment in amisulpride overdose; hypothesis-generating and requires prospective confirmation.
Electrocardiograms (ECGs) from a case series of 86 amisulpride overdose events in 66 patients were reviewed for abnormal QT intervals and torsade de pointes (TdP). Eight patients exhibited TdP. In this investigative case series, the magnitude of prolongation of the QT interval was a stronger predictor of TdP than the mere presence of a prolongation per se. Clinical Pharmacology & Therapeutics (2011) 90 2, 243–245. doi:10.1038/clpt.2011.107
No takes yet. Share an insight, caveat, or question.
Joy et al. (2011) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: