title: Transcatheter occlusion of patent ductus arteriosus by Rashkind umbrella device: follow-up results.
abstract: Seventy-six patients (36 boys and 40 girls) with patent ductus arteriosus who had successful ductal occlusion with a Rashkind umbrella device were monitored for a period of 6 to 60 months (mean 26.7 +/- 12.3 months). All patients were evaluated by pulsed and color Doppler echocardiography before and after the procedure. The prevalence of residual left-to-right shunt and main pulmonary artery flow pattern were assessed. Residual left-to-right shunt was seen in 12 (15.7%) patients 24 hours after the procedure, but the shunt was small with a pulmonary-to-systemic blood flow ratio of < 1.3:1. Repeat echo Doppler study at 14 days showed residual left-to-right shunt in 10 (13.1%) patients. None of these patients showed further decrease in prevalence of residual left-to-right shunt. The patients with residual left-to-right shunt had larger ductii (mean 5.17 +/- 0.88 mm, range 4.23 to 6.6 mm) as compared to patients with no residual left-to-right shunt (3.31 +/- 0.86 mm, range 1.8 to 4.69 mm; p < 0.001). Two patients with residual shunt had successful ductus reocclusion, with 12 and 17 mm devices, respectively, at 28 month of follow-up. The Rashkind umbrella device is effective in closing ducti with diameters of < 5 mm in majority of patients.
authors.affiliation: Department of Cardiology, G.B. Pant Hospital, New Delhi, India.
authors.forename: R
authors.initials: R
authors.lastname: Arora
authors.forename: G S
authors.initials: GS
authors.lastname: Kalra
authors.forename: M
authors.initials: M
authors.lastname: Nigam
authors.forename: M
authors.initials: M
authors.lastname: Khalillulah
mesh_terms: D000293:Adolescent; D000328:Adult; D002404:Catheterization; D002648:Child; D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000503:physiopathology / Q000628:therapy*; D015150:Echocardiography, Doppler; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008722:Methods; D008991:Monitoring, Physiologic