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Arterial repair for simple and complex forms of transposition of the great arteries
Insights
Arterial repair for Transposition of the Great Arteries (TGA) shows promising results, with 90% survival and no heart failure in survivors. This surgical approach avoids conduits and offers good long-term outcomes.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Surgery
- Cardiovascular Surgery
Background:
- Traditional Transposition of the Great Arteries (TGA) repair involves atrial redirection.
- Concerns exist regarding late right ventricular and sinus node dysfunction with atrial repair.
- Arterial repair is increasingly utilized as an alternative surgical strategy.
Purpose of the Study:
- To evaluate the outcomes of arterial repair for Transposition of the Great Arteries (TGA).
- To assess the safety and efficacy of this surgical approach in infants and young children.
Main Methods:
- Retrospective analysis of 11 patients undergoing arterial repair for TGA.
- Patients ranged from 7 days to 22 months old.
- Included patients with intact ventricular septum and large ventricular septal defects (VSD).
Main Results:
- Two operative deaths occurred (18% mortality).
- Nine survivors are well at a mean follow-up of 15 months.
- No patient experienced congestive heart failure; 5 required no medications.
- Catheterization revealed patent coronary arteries and normal left ventricular function in evaluated patients.
- Mild to moderate supravalvar pulmonary stenosis was noted in all patients.
Conclusions:
- Arterial repair for TGA is a viable option with acceptable operative mortality.
- The technique demonstrates good short- to mid-term outcomes, including preserved left ventricular function and patent coronaries.
- Further long-term follow-up is warranted to fully assess the benefits of arterial repair over atrial redirection.
Abstract:
Transposition of the great arteries (TGA) has traditionally been repaired by redirection of atrial flow. Concern over the late development of right ventricular and sinus node dysfunction has prompted increased use of the arterial repair. This approach was utilized in 11 patients ranging in age from 7 days to 22 months (mean 5.3 months) and in weight from 2.6 to 12.2 kg (mean 5.1 kg). Five patients had intact ventricular septum and underwent primary repair electively or after poor response to balloon atrial septostomy. A large ventricular septal defect (VSD) was present in 6 patients, one of whom had coarctation of the aorta and one with type B interrupted aortic arch. Pulmonary artery banding was done in 3 of these patients in addition to subclavian artery aortoplasty and primary arch repair. Spontaneous VSD closure occurred in 2 banded patients. All patients had normal coronary artery distribution. Conduits were not used in any repair. There were 2 operative deaths caused by injury to the right coronary artery prior to establishing bypass in one patient and to left ventricular (LV) failure in a patient operated on at 5 months of age with an LV pressure of only one-half systemic level. The 9 surviving patients are well from 4 to 38 months after operation (mean 15 months). No patient has congestive heart failure and 5 receive no medications. Catheterization in 4 patients revealed widely patent coronaries in each. Trivial aortic insufficiency was noted in 1 patient. Each had mild to moderate supravalvar pulmonary stenosis (12 to 51 mmHg). LV function was normal in each case.(ABSTRACT TRUNCATED AT 250 WORDS)