Right to left shunt through interatrial septal defects in patients with congenital heart disease: results of interventional closure.
Heart 2005;
92:827-31. [PMID:
16269438 PMCID:
PMC1860651 DOI:
10.1136/hrt.2005.071092]
[Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE
To study the effects of closure of interatrial communications associated with a right to left shunt in patients with congenital heart disease (CHD) who had a biventricular repair.
DESIGN
Retrospective study.
SETTING
Tertiary referral centre.
PATIENTS
15 patients with CHD with right to left shunt through an interatrial communication: three had repaired tetralogy of Fallot, five had repaired pulmonary atresia with intact ventricular septum, four had Ebstein's disease, and three had other CHDs. Two patients had had a stroke before closure of the interatrial communication.
INTERVENTIONS
Percutaneous atrial septal defect (n = 6) or persistent foramen ovale (n = 9) closure. All patients underwent an exercise test before and after interatrial communication closure.
RESULTS
Five patients were cyanotic at rest. During exercise, mean (SD) oxygen saturation diminished from 93.9 (3.8)% to 84.3 (4.8)% (p < 0.05). Interatrial communication closure led to an immediate increase of oxygen saturation from 93.9 (3.8)% to 98.6 (1.6)% (p < 0.05). At a median follow up of three years (range 0.5-5) all but one patient with a residual atrial septal defect had normal oxygen saturation at rest and during exercise. Maximum workload increased from 7.2 (1.9) to 9.0 (2.2) metabolic equivalents (p < 0.001).
CONCLUSIONS
Percutaneous closure of interatrial communications associated with a right to left shunt allows restoration of normal oxygen saturation at rest, avoidance of desaturation during exercise, and improvement of exercise performance in patients with CHD.
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