Right ventricular outflow tract deployment of stents in the management of tetralogy with hypoplastic pulmonary arteries

Results Twelve (12) children received a stent and 23 received shunts. Age (days) and weight (kg) respectively were 59.2 ± 30.9, 3.7 ± 0.9 for stent patients and 64.2 ± 40.9, 3.9 ± 1.3, for shunt patients (p, NS for age and weight). Pre-procedural saturations and pulmonary artery size (mean branch size in mm) were 74.6% ± 13.6, 4.8 ± 1.3 for shunts and 76.7 ± 11.2, 3.9 ± 0.8 for stents (p, NS sats, p = 0.017, size). Secondary procedures were required in 3/ 12 stent patients and 6/23 shunt patients. Initial procedure mortality was 0/12 (0%) stents and 2/23 (8.7%) shunts. The time interval between initial procedure and complete repair was 17.7 ± 5.2 months for shunt patients and 6.5 ± 4.2 months for stent patients (p < 0.001). Repair type was trans-annular patch or right ventricular pulmonary artery conduit in 89% (16/18) shunt patients and all patients with stents (9/9) had a trans-annular patch. Post repair procedures consisted of coiling collaterals in 2/9 with stents and none with shunts. Survival through complete repair was 100% (9/9) in stents and 85% (17/20) in the shunts.