torsades de pointes

noun
tor·​sades de pointes | \ tȯr-ˌsäd(z)-də-ˈpwant How to pronounce torsades de pointes (audio) \
variants: or torsade de pointes \ -​ˌsäd-​ How to pronounce torsade de pointes (audio) \

Medical Definition of torsades de pointes

: ventricular tachycardia that is characterized by fluctuation of the QRS complexes around the electrocardiographic baseline, is typically caused by a long QT interval, and may lead to life-threatening ventricular fibrillation