Transcaval repair of sinus venosus defect. Using a butterfly-shaped patch

Area of Science:

• Cardiovascular Surgery
• Pediatric Cardiology
• Congenital Heart Defects

Background:

• Sinus venosus atrial septal defects (SVASDs) with anomalous pulmonary venous connections present unique surgical challenges.
• Traditional repair methods may lead to complications such as sinus node dysfunction and venous obstruction.

Purpose of the Study:

• To describe a novel operative technique for repairing SVASDs with anomalous pulmonary venous connections.
• To evaluate the efficacy and safety of this technique in a patient cohort.

Main Methods:

• A longitudinal incision confined to the vena cava was used in 30 patients between 1982 and 1995.
• A folded butterfly-shaped patch was employed to redirect pulmonary venous return and enlarge the terminal cava.
• The technique aimed to avoid sinus node dysfunction and superior vena cava or pulmonary venous obstruction.

Main Results:

• The butterfly patch technique successfully repaired SVASDs with anomalous pulmonary venous connections in all 30 patients.
• No instances of sinus node dysfunction or superior vena cava/pulmonary venous obstruction were reported post-operatively.
• Operative findings suggest a malformation involving the sinus venosus, right superior pulmonary veins, and right common cardinal veins.

Conclusions:

• The butterfly patch technique is a safe and effective method for correcting sinus venosus atrial septal defects with anomalous pulmonary venous connections.
• This approach minimizes the risk of major postoperative complications.
• The study contributes to understanding the embryological basis of sinus venosus defects.