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KMID : 0364019960290020147
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Korean Journal of Thoracic and Cardiovascular Surgery
1996 Volume.29 No. 2 p.147 ~ p.152
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Postoperative Assessment of Residual Defects Following Surgical Closure of Ventricular Septal Defects
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조준용
허동명/전상훈/장봉현/이종태/김규태
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Abstract
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This study was undertaken to assess the residual interventricular shunt following surgical closure of the isolated ventricular septal defect. From January 1989 through December 1993, 211 patients underwent surgical closure of the isolated
ventricular
septal defect. All patients had 2D-Echocardiographic study after operation to rule out residual ventricular defect. There was a 9.5%incidence of a definite residual shunt. The type of ventricular septal defect, closure method of the defect and
cardiopulmonary bypass time showed no significant differences between two groups. The size of ve3ntricular septal defect(6.3±3.7mm versus 10.6±5.8mm; p=0.0034), aortic cross-clamping time(32.6±15.0 minutes versus 48.5±20.0 minutes; p=0.0003),
pulmonary-to-systemic pressure ratio(0.31±0.22 versus 0.51±0.33; p=0.019) and mean pulmonary artery pressure(20.3±11.9mmHg versus 29.1±16.2mmHg; p=0.009) were meaningfully different between two groups. There were 9 instances of spontaneous
closure
of the residual shunts at mean 21 months of following up(ranged 1~43 months). In conclusion, we suggest that the size of ventricular septal defect, aortic cross-clamping time and mean pulmonary artery pressure may piay an important role in
occurance of
residual ventricular septal defect.
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