Electrophysiological and clinical characteristics of arrhythmias originating from the superior vena cava

Q: What is the clinical evidence from this study?

Study design: Observational. Population: Atrial tachyarrhythmias (n=351). Intervention: Radiofrequency catheter ablation (focal ablation vs. electrical isolation). Primary outcome: Prevalence of superior vena cava (SVC) origin arrhythmias.

Sachiko Ito; Hiroshi Tada; Shigeto Naito; Toru Hashimoto; Kohei Miyaji; Minoru Yamada; Kazuyoshi Tadokoro; Hiroshi Hoshizaki; Shigeru Oshima; Koichi Taniguchi

doi:10.5105/jse.25.265

January 1, 2005Japanese Journal of ElectrocardiologyOpen Access

Electrophysiological and clinical characteristics of arrhythmias originating from the superior vena cava

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Study Design

Type

Observational (n=351)

Multicenter

No

Structured PICO

P

Population

351 patients with atrial tachyarrhythmias who underwent successful radiofrequency catheter ablation, evaluated to identify the prevalence and characteristics of arrhythmias originating from the superior vena cava.

I

Intervention

Radiofrequency catheter ablation (focal ablation or SVC isolation)

O

Outcome

Frequency, electrophysiological characteristics, and treatment outcomes of SVC-originating tachycardia

Limitations

Small sample size of patients with SVC-origin arrhythmias (n=10), making it difficult to draw definitive statistical conclusions regarding ablation methods.
Lack of detailed programmed stimulation or isoproterenol use in some cases, preventing the determination of clear arrhythmia mechanisms.
Small sample size (only 2 cases each for focal ablation and isolation in patients with exit block)
Exact mechanism of tachycardia could not be determined in many cases due to lack of detailed programmed stimulation or entrainment

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Implication

For SVC-originating atrial arrhythmias, focal ablation is effective when there is no SVC-to-RA exit block, whereas SVC isolation is more effective when exit block is present.

Abstract

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Discussion

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Cite This Study

Ito et al. (2005) conducted an observational in Atrial tachyarrhythmias (n=351). Radiofrequency catheter ablation (focal ablation vs. electrical isolation) was evaluated on Prevalence of superior vena cava (SVC) origin arrhythmias.

synapsesocial.com/papers/6a9e9e9701b90458ac61e4b1 https://doi.org/10.5105/jse.25.265

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Electrophysiological and clinical characteristics of arrhythmias originating from the superior vena cava

Study Design

Structured PICO

Limitations

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

Electrophysiological and clinical characteristics of arrhythmias originating from the superior vena cava

Study Design

Structured PICO

Limitations

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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