What does this research mean for the field?

Torsades de pointes is a distinct ventricular arrhythmia characterized by a polymorphous ECG pattern and a long QT interval, driven by either congenital adrenergic-dependent or acquired pause-dependent factors that share similar cardiac substrates. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Characterize the electrocardiographic hallmarks, underlying cardiac substrates, triggers, and therapeutic interventions associated with torsades de pointes.

June 1, 1992Journal of Cardiovascular Electrophysiology

Torsades de Pointes

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Characterize the electrocardiographic hallmarks, underlying cardiac substrates, triggers, and therapeutic interventions associated with torsades de pointes.
Reviewed electrophysiological and electrocardiographic features defining polymorphous ventricular electrical activity in long QT syndrome.
Analyzed clinical etiologies categorizing arrhythmias into congenital adrenergic-dependent and acquired pause-dependent mechanisms.
Torsades de pointes is characterized on electrocardiograms by polymorphous, organized ventricular complexes triggered in the presence of long QT intervals and long-coupled bigeminy.
Congenital forms predominantly exhibit adrenergic dependence, whereas acquired forms display pause dependence despite sharing similar underlying cardiac substrates.

Design

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Implication

Guides ECG recognition and QT monitoring in at-risk patients; confirms classic features while leaving open questions on emerging triggers.

Abstract

Torsades de Pointes. Torsades de pointes are typically characterized by an ECG pattern of polymorphous but organized electrical activity of ventricular origin that occurs in the setting of a long QT interval, long‐coupled bigeminy, and has specific precipitating causes and therapeutic responses. Torsades de pointes can result from congenital (adrenergic dependent) and acquired (pause dependent) factors and may have similar cardiac substrates with different precipitating events. ( J Cardiovasc Electrophysiol, Vol. 3, pp. 281–292, June 1992 )

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Cite This Study

Leenhardt et al. (1992) studied this question.

synapsesocial.com/papers/6a1be6f11567d2fc4d5f3b33 https://doi.org/10.1111/j.1540-8167.1992.tb00973.x

Topics

Ventricular arrhythmias

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Implication

Guides ECG recognition and QT monitoring in at-risk patients; confirms classic features while leaving open questions on emerging triggers.

Torsades de Pointes

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Torsades de Pointes

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