Cost effectiveness and clinical efficacy of patent foramen ovale closure as compared to medical therapy in cryptogenic stroke patients: A detailed cost analysis and meta-analysis of randomized controlled trials

Abstract

Background: Up to half the patients with cryptogenic stroke under the age of 55 years have been found to have a PFO. Observational studies have demonstrated a benefit from closure of PFO and several RCTs have shown a trend toward benefit. The cost and clinical effectiveness of PFO closure is unclear.

Methods and results: We searched for RCTs of PFO closure in patients with cryptogenic stroke and performed a detailed cost analysis and meta-analysis of treatment outcomes based on the results of the meta-analysis. Five RCTs containing 3404 patients with cryptogenic stroke were included. Of these 1829 underwent PFO closure and 1611 received medical therapy. Mean follow-up was 4.0 years. PFO closure achieved cost effectiveness (<$50,000/Quality-adjusted life-year gained) 2.7 years (95% Confidence Interval (CI) 2.2-3.4) after closure. The incremental cost to prevent one combined end point (CEP, combined transient ischemic attack (TIA), stroke, and death) by PFO closure was $535,655(95% CI $458,329-$642,674). After 55.4 years (95%CI 51.1-60.5) of follow-up, the per patient total cost of medical therapy exceeded that of PFO closure. PFO closure demonstrated clinical efficacy with a decreased risk of CEP (pooled hazard ratio (HR = 0.43(95%CI 0.27-0.59))) and a decreased risk of stroke (HR = 0.29(95%CI 0.02-0.57)).

Conclusions: In comparison to medical therapy alone, PFO closure appears to be cost-effective and clinically efficacious.

Keywords: Cost analysis; Cryptogenic stroke; Meta-analysis; Patent foramen ovale; Stroke.