What does this research mean for the field?

Following cardioversion of ventricular arrhythmias, early bradycardia is frequently observed and is significantly associated with the need for multiple cardioversions and the presence of inferior myocardial infarction. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to investigate the electrocardiographic changes following cardioversion of ventricular arrhythmias.

January 1, 1986Circulation

Electrocardiographic changes after cardioversion of ventricular arrhythmias.

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Why the study?

What are the early electrocardiographic rhythm changes following cardioversion of induced ventricular arrhythmias?

Key Points

This research aims to investigate the electrocardiographic changes following cardioversion of ventricular arrhythmias.
56 patients underwent continuous three-lead and serial 12-lead electrocardiographic monitoring for 15 minutes after 77 cardioversions.
External cardioversion used initial energy of 200 Wsec in 57 of 64 episodes.
Data on bradycardia occurrence and response to multiple cardioversions were analyzed.
200 Wsec effectively terminated 41 of 44 episodes of ventricular tachycardia and 6 of 13 episodes of ventricular fibrillation (p < 0.001).
Early bradycardia occurred in 17 of 64 external and 2 of 13 internal cardioversions, associated with the need for multiple cardioversions (p < 0.05).
Supraventricular tachycardia was observed in 19 of 64 external and 6 of 13 internal cardioversions (p = NS).

Structured PICO

What are the early electrocardiographic rhythm changes following cardioversion of induced ventricular arrhythmias?

Population

56 patients undergoing 77 cardioversions for induced ventricular arrhythmias

Intervention

Cardioversion (external in 50 patients, internal via implanted automatic cardioverter/defibrillator in 9 patients)

Outcome

Rhythm and QRS-T changes during 15 minutes of continuous electrocardiographic monitoring post-cardioversionsurrogate

Cardioversion of ventricular arrhythmias frequently results in early transient arrhythmias, including bradycardia, which is more common in patients requiring multiple shocks or those with prior inferior myocardial infarction.

Discussion

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Implication

May warrant post-cardioversion monitoring in inferior MI or repeat-shock cases; hypothesis-generating for prospective validation.

Cite This Study

Eysmann et al. (1986) studied this question.

synapsesocial.com/papers/6a17e710e456d28b2d6e9495 https://doi.org/10.1161/01.cir.73.1.73

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Electrocardiographic changes after cardioversion of ventricular arrhythmias.

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Electrocardiographic changes after cardioversion of ventricular arrhythmias.

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Also Consider