What does this research mean for the field?

Intravenous administration of verapamil in patients with supraventricular tachycardia can induce alternation of RR cycle length, sometimes with changing QRS morphology, prior to reversion to sinus rhythm. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

June 1, 1974HeartOpen Access

Cycle length alternation in supraventricular tachycardia after administration of verapamil.

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Why the study?

Does intravenous verapamil cause cycle length alternation in patients with supraventricular tachycardia?

Population

4 patients with supraventricular tachycardia

Design

Case_series

Authors

JVJitendra K. VohraElectrophysiology DHDavid HuntBond University JSJackson H. StuckeyThe University of Texas Health Science Center at San Antonio

Discussion

Member takes

Implication

RR alternation may precede verapamil-induced SVT termination; case reports leave open causality and generalizability.

Key Points

To describe cases of cycle length alternation in patients with supraventricular tachycardia after verapamil administration.
Reported cases of four patients
Administration of intravenous verapamil
Observation of RR cycle length and QRS morphology changes
Cycle length alternation observed in all four patients
Two patients experienced QRS morphology changes
All cases reverted to sinus rhythm after verapamil administration

Structured PICO

Does intravenous verapamil cause cycle length alternation in patients with supraventricular tachycardia?

Population

4 patients with supraventricular tachycardia

Intervention

Intravenous verapamil

Outcome

Alternation of RR cycle length before reversion to sinus rhythmsurrogate

Intravenous verapamil administration for supraventricular tachycardia can be associated with RR cycle length alternation and changing QRS morphology prior to reversion to sinus rhythm.

Cite This Study

Vohra et al. (1974) studied this question.

synapsesocial.com/papers/6a1d408273c56dd1bd2f6b4e https://doi.org/10.1136/hrt.36.6.570

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Cycle length alternation in supraventricular tachycardia after administration of verapamil.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Cycle length alternation in supraventricular tachycardia after administration of verapamil.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider