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Ann Thorac Surg 2000;70:723-726
© 2000 The Society of Thoracic Surgeons

Original articles: cardiovascular

Right ventricular outflow tract after non-conduit repair of tetralogy of Fallot with coronary anomaly

Sanjeev Kalra, MCha, Rajesh Sharma, MCha, Shiv Kumar Choudhary, MCha, Balram Airan, MCha, Anil Bhan, MCha, Anita Saxena, DMb, Shyam Sunder Kothari, DMb, Panangipalli Venugopal, MCha

a Department of Cardiothoracic and Vascular Surgery, Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India
b Department of Cardiology, Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India

Address reprint requests to Dr Sharma, Department of Cardiothoracic and Vascular Surgery, Cardiothoracic Centre, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110 029, India,
e-mail: rsharma{at}hotmail.com

Background. A total of 25 patients with tetralogy of Fallot and an important coronary artery crossing the right ventricular outflow tract underwent complete repair without use of an extracardiac conduit between January 1990 and December 1994. Repair was exclusively done by the transatrial or transatrial-transpulmonary approach. Age of these patients ranged from 1 to 12 years (mean 3.6 years). Three of the patients had already received a systemic to pulmonary artery shunt.

Methods. All patients reporting for follow-up (n = 18) were subjected to transthoracic echocardiography and, if required, cardiac catheterization and angiography. Right ventricle to pulmonary artery gradients were noted preoperatively, at discharge following repair and at follow-up study.

Results. Mean follow-up was 40.6 months (24 to 62 months). Mean early postoperative gradient was 23.5 ± 13.4 mm Hg and 4 patients had significant (> 30 mm Hg) gradients. Mean late postoperative gradient was 20.6 ± 12.4 mmHg and 2 patients had gradients greater than 30 mmHg. All the patients were in New York Heart Association functional class I at the time of last follow-up.

Conclusions. Acceptable gradients across the right ventricular outflow tract are achievable following repair of tetralogy of Fallot in the presence of anomalous coronary artery across the right ventricular outflow tract using the transatrial or transatrial-transpulmonary approach. Most gradients were found not to vary significantly on subsequent follow-up.






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