JOURNAL ARTICLE

Pulmonary artery banding and venous bidirectional cava-pulmonary shunt for two-stage arterial switch procedure in late referral of patients with transposition of the great arteries and intact ventricular septum: midterm results

Ayhan Cevik, Ali Rıza Karaci, Bulent Polat, Murat Erturk, Yalım Yalcin, Volkan Yazicioglu, Ece Salihoglu
Cardiology in the Young 2019, 29 (5): 649-654
31230611

OBJECTIVE: Two-stage arterial switch operation and left ventricle retraining are necessary for the patients with left ventricle dysfunction and transposition of great vessels with intact ventricular septum (TGA-IVS) who are referred late.

MATERIAL AND METHODS: Forty-seven patients with the diagnosis of TGA-IVS and left ventricle dysfunction who underwent arterial switch operation in our centre between July 2013 and August 2017 were analysed retrospectively. The inclusion criteria for left ventricle retraining were patients older than 2 months of age at presentation, having an echocardiographic left ventricle mass index of less than 35 g/m², and having an echocardiographic "banana-shaped" left ventricle geometric appearance. The patients were divided into two groups: pulmonary artery banding and Blalock Taussig shunt were performed as the initial surgical procedure for later arterial switch operation in Group I (n = 19) and pulmonary artery banding and bidirectional cava-pulmonary shunt in Group 2 (n = 28).

RESULTS: The average age was found to be 122.3 ± 45.6 days in Group I and 145.9 ± 37.2 days in Group II. There was no statistically significant difference (p = 0.232 versus p = 0.373) between the average left ventricle mass index of the two groups neither before the first stage nor the second stage (26.6 ± 4.8 g/m² versus 25.0 ± 4.9 g/m² and 70.5 ± 12 g/m² versus 673.8 ± 12.0 g/m², respectively). The average time interval for the left ventricle to retrain was 97.7 ± 42.9 days for Group I and 117.3 ± 40.3 days for Group II, significantly lower in Group I (p = 0.027). The time spent in ICU, length of the period during which inotropic support was required, and the duration of hospital stay were significantly higher in Group I (p<0.001, p < 0.001, and p < 0.00, respectively).

CONCLUSION: Pulmonary artery banding and bidirectional cava-pulmonary shunt can be performed as a safe and effective alternative to pulmonary artery banding and arterial Blalock Taussig shunt for patients with TGA-IVS in whom arterial switch operation is needed beyond the neonatal period. This approach involves a shorter hospital stay and fewer post-operative complications.

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