What is the clinical evidence from this study?

Study design: Cohort. Population: Cavotricuspid-isthmus independent macroreentrant atrial tachycardias (n=133). Intervention: Previous open heart surgery (OHS) vs. No previous open heart surgery. Primary outcome: Radiofrequency catheter ablation (RFCA) acute success rate (p=0.04).

What does this research mean for the field?

In patients undergoing catheter ablation for cavotricuspid-isthmus-independent atrial tachycardias, a history of prior open heart surgery is associated with a significantly higher acute ablation success rate compared to patients without prior surgery. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

January 1, 2005EP EuropaceOpen Access

370 Surgical resection of postinfarction ventricular tachycardia: a risky enterprise?

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Key result

Prior open-heart surgery is linked to ~16% higher acute ablation success in isthmus-independent atrial tachycardias.

P=0.04
n=133

Why the study?

Catheter ablation criteria and identification of slow conduction areas in cavotricuspid-isthmus independent macroreentrant atrial tachycardias have not been well studied, and mapping these arrhythmias remains challenging despite new technologies.

Does conventional activation mapping and single point ablation successfully treat cavotricuspid-isthmus independent macroreentrant atrial tachycardias?

Population

133 patients with 158 cavotricuspid-isthmus independent macroreentrant ATs including 64 with congenital heart disease and 90 with previous open heart surgery

Comparison

Patients with previous open heart surgery vs patients without previous open heart surgery

Design

Retrospective cohort study using conventional activation mapping and single point RF ablation

Follow-up

Mean 14.24±8.4 months

Authors

PBP.J.J. BaatenSt. Antonius Ziekenhuis NHN. van HemelRoyal BAM Group (Netherlands)JKJohannes C. KelderInterventional Cardiology

Discussion

Member takes

Implication

SCA identification may streamline CA for CTI-independent macroreentrant ATs; leaves open prospective validation of criteria.

Study Design

Type

Cohort (n=133)

Structured PICO

Does conventional activation mapping and single point ablation successfully treat cavotricuspid-isthmus independent macroreentrant atrial tachycardias?

Population

133 patients (mean age 51.5 years, 39.1% female) with 158 isthmus-independent macroreentrant atrial tachycardias undergoing catheter ablation, followed for a mean of 14.2 months.

Exposure

Radiofrequency catheter ablation (RFCA) using conventional high-resolution activation mapping technique and single point ablation

Comparator

Patients without previous open heart surgery (Group 2) compared to those with previous open heart surgery (Group 1)

Outcome

Success rate of macroreentrant AT ablation

Main Result

Absolute Event Rate: 78% vs 62%

p-value: p=0.04

Conventional activation mapping and single point ablation remain effective for treating cavotricuspid-isthmus independent atrial tachycardias, particularly in patients with previous open heart surgery.

Cite This Study

Baaten et al. (2005) conducted a cohort in Cavotricuspid-isthmus independent macroreentrant atrial tachycardias (n=133). Previous open heart surgery (OHS) vs. No previous open heart surgery was evaluated on Radiofrequency catheter ablation (RFCA) acute success rate (p=0.04). In patients undergoing catheter ablation for isthmus-independent atrial tachycardias, previous open heart surgery was associated with a higher acute success rate compared to no previous surgery (78% vs 62%, p=0.04).

synapsesocial.com/papers/6ab368deacf80326a63b1c5c https://doi.org/10.1016/eupace/7.supplement_1.77-b

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Bookmark

370 Surgical resection of postinfarction ventricular tachycardia: a risky enterprise?

Discussion

Member takes

Implication

Study Design

Structured PICO

Main Result

Cite This Study

370 Surgical resection of postinfarction ventricular tachycardia: a risky enterprise?

Discussion

Member takes

Implication

Study Design

Structured PICO

Main Result

Cite This Study

Also Consider

Also Consider