Long-term results after fluoroscopy-guided closure of patent foramen ovale for secondary prevention of paradoxical embolism. Issue 3 (16th July 2007)

• Record Type: Journal Article
• Authors: Wahl, A; Kunz, M; Moschovitis, A; Nageh, T; Schwerzmann, M; Seiler, C; Mattle, H P; Windecker, S; Meier, B
• Is Part Of: Heart. Volume 94:Issue 3(2008)
• Page Start: 336
• Page End: 341
• Publication Date: 2007-07-16
• Subjects: Heart -- Diseases -- Treatment -- Periodicals; Cardiology -- Periodicals; 616.12
• DOI: 10.1136/hrt.2007.118505
• Languages: English
• ISSNs: 1355-6037

Abstract

Abstract : Objectives: To carry out long-term follow-up after percutaneous closure of patent foramen ovale (PFO) in patients with cryptogenic stroke. Design: Prospective cohort study. Setting: Single tertiary care centre. Participants: 525 consecutive patients (mean (SD) age 51 (12) years; 56% male). Interventions: Percutaneous PFO closure without intraprocedural echocardiography. Main outcome measures: Freedom from recurrent embolic events. Results: A mean (SD) of 1.7 (1.0) clinically apparent embolic events occurred for each patient, and 186 patients (35%) had >1 event. An atrial septal aneurysm was associated with the PFO in 161 patients (31%). All patients were followed up prospectively for up to 11 years. The implantation procedure failed in two patients (0.4%). There were 13 procedural complications (2.5%) without any long-term sequelae. Contrast transoesophageal echocardiography at 6 months showed complete closure in 86% of patients, and a minimal, moderate or large residual shunt in 9%, 3% and 2%, respectively. Patients with small occluders (<30 mm; n = 429) had fewer residual shunts (small 11% vs large 27%; p<0.001). During a mean (SD) follow-up of 2.9 (2.2) years (median 2.3 years; total 1534 patient-years), six ischaemic strokes, nine transient ischaemic attacks (TIAs) and two peripheral emboli occurred. Freedom from recurrent stroke, TIA, or peripheral embolism was 98% at 1 year, 97% at 2 years and 96% at 5 and 10 years, respectively. A residual shunt (hazard ratio = 3.4; 95% CI 1.3 to 9.2) was a risk factor for recurrence. Conclusions: This study attests to the long-term safety and efficacy of percutaneous PFO closure guided by fluoroscopy only for secondary prevention of paradoxical embolism in a large cohort of consecutive patients.