Arrhythmias & electrophysiologyCohort study
Association of Case Volume With Ablation Outcomes in Children
- multicenter retrospective cohort study
Authors' conclusion
Pediatric catheter ablation acute success was high across a range of center and operator volumes. Complex substrates have increased odds of success at high volume centers, and high and very high-volume centers have consistent rates of success despite increasing case complexity.
Study context
- Population
- Patients undergoing ablation at Improving Pediatric And Adult Congenital Treatment registry sites from April 2016-March 2020ablations at 74 hospitals, 156 operators
- Participants
- 18,666 patients
- Exposure
- center or operator annual case volume (low, medium, high, or very high) and the likelihood of acute ablation success
Main finding
As reported in the abstract
acute success was reported in 17,204
92%
Observational data: associations, not effects.
Further findings
| Outcome | Values | P value |
|---|---|---|
| Acute success by center volume · marginal but statistically insignificant increases · unadjusted | High/very high-volume centers 92% · medium/low centers 91% | P = 0.24 |
| Acute success by operator volume | very high-volume operators 94% · low 92.4% · medium 91.9% · high 92.2% |
- Acute success by operator volume — P
- P = 0.015
Odds of acute success at high volume centers, patients with congenital heart disease
- OR, high volume centers (multivariable)
- 2.3; CI: 1.21-4.4
- multivariable model; comparator not stated
Odds of acute success at high volume centers, patients with premature ventricular contractions/ventricular tachycardia
- OR, high volume centers (multivariable)
- 2.2; CI: 1.23-4.1
- multivariable model; comparator not stated
Operator volume and acute success (multivariable)
- no association between operator volume and acute success
Original publication
Summarised from the published abstract; every number is checked against it