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Partial anomalous pulmonary venous connection (intact atrial septum) associated with mitral regurgitation
Abstract:
The association of partial anomalous pulmonary venous connection with intact atrial septum and isolated severe nonrheumatic mitral regurgitation is rare, this combination of lesions having been reported on only one other occasion. Two such cases have been presented, with each patient having experienced an episode resembling subacute bacterial endocarditis. At operation, however, the mitral valve had a congenital cleft in one case and was normal in the other. One patient underwent mitral valvuloplasty and the second patient had mitral valve replacement. The diagnosis of associated partial anaomalous pulmonary venous connection was established at cardiac catheterization, and successful surgical correction was achieved in each case by diversion of the anamolaous pulmonary venous drainage to the left atrium via a pericardial tunnel through a surgically created atrial septal defect.
Insights
This study presents two rare cases of partial anomalous pulmonary venous connection with an intact atrial septum and severe mitral regurgitation. Surgical correction involved diverting venous blood flow to the left atrium, achieving successful outcomes.
Area of Science:
- Cardiology
- Congenital Heart Disease
- Cardiac Surgery
Background:
- Partial anomalous pulmonary venous connection (PAPVC) with an intact atrial septum and severe mitral regurgitation (MR) is exceptionally rare.
- This specific combination of congenital heart defects has been documented infrequently in medical literature.
Observation:
- Two patients presented with symptoms suggestive of subacute bacterial endocarditis.
- Intraoperative findings revealed a congenital cleft mitral valve in one patient and a normal mitral valve in the other.
- Diagnosis of associated PAPVC was confirmed via cardiac catheterization.
Findings:
- One patient underwent successful mitral valvuloplasty, while the other received a mitral valve replacement.
- Surgical correction of PAPVC was achieved by creating a pericardial tunnel to redirect anomalous pulmonary venous drainage to the left atrium through an atrial septal defect.
Implications:
- Highlights the importance of considering rare congenital heart defect associations in complex cardiac presentations.
- Demonstrates the efficacy of surgical intervention for combined PAPVC and severe MR.
- Contributes to the understanding and management of unusual congenital cardiac anomalies.