Use of the THERMOCOOL SMARTTOUCH catheter for ablation of atrial fibrillation: the relationship between hospital procedure volume, re-admissions, and economic outcomes

Abstract

Objective: The purpose of this study was to examine the relationship between hospital volume of prior THERMOCOOL SMARTTOUCH catheter use and health and economic outcomes among hospitalized patients with atrial fibrillation (AF) undergoing ablation using this device.

Materials and methods: Patients aged ≥18 years with a primary diagnosis of AF undergoing ablation treatment using the THERMOCOOL SMARTTOUCH catheter between January 2014 and June 2016 were identified from the Premier hospital database with the first date of such a procedure being defined as the index date. Hospital volume of prior THERMOCOOL SMARTTOUCH catheter use was determined during the 12-month pre-index period, and was classified into five groups: no volume (0), low volume (1–50), mid volume (51–100), high volume (101–150), and very high volume (≥151). Outcomes, including length of stay (LOS; for inpatient procedure only), hospital costs (total, hospital pharmacy, supply), and all-cause re-admission were evaluated. A generalized estimating equation (GEE) with exchangeable correlation structure was used to examine the impact of hospital volume on LOS, hospital costs, and re-admissions controlling for hospital clustering and other covariates.

Results: The study population included 640 hospitalized AF patients. The adjusted mean LOS was significantly shorter in very high-volume hospitals than hospitals with no volume (mean LOS 2.30 vs 4.33 days; p = .0377). As volume increased, the mean adjusted supply cost tended to decrease, although these changes emerged as non-significant. The 12-month all-cause re-admission was significantly lower among patients undergoing ablation in low (Odds ratio [OR] = 0.27; confidence interval [CI] = 0.08–0.85) and mid (OR = 0.12; CI = 0.02–0.61) volume hospitals compared to hospitals with no volume.

Limitations: Study results may not be generalizable to all US hospitals.

Conclusions: Among AF patients undergoing ablation, increased hospital volume of prior THERMOCOOL SMARTTOUCH catheter use was associated with shorter LOS and a lower likelihood of all-cause re-admission.

Keywords:

• Atrial fibrillation
• catheter ablation
• THERMOCOOL SMARTTOUCH catheter
• procedure volume
• costs
• LOS

Transparency

Declaration of funding

This study was sponsored by Johnson and Johnson.

Declaration of financial/other relationships

AB, IK, LG, RL, and RK are Johnson and Johnson employees. JME peer reviewers on this manuscript have no relevant financial or other relationships to disclose.

Previous presentations

Results from the study were presented at the International Society for Pharmacoeconomics and Outcomes Research 6th Latin America Conference, September 15–17, 2017, in Sao Paulo, Brazil.

Acknowledgments

Editorial support was provided by Brandy Menges, PhD, from Novosys Health, which received funding from Johnson and Johnson.