Ann Thorac Surg. 2018 Jul 25. pii: S0003-4975(18)31031-2. [Epub ahead of print]
BACKGROUND: Norwood palliation typically requires patch augmentation of the ascending aorta and aortic arch. Patients having undergone Norwood palliation are at risk of recurrent arch obstruction, the risk of which may be impacted by the type of patch material used at the time of Norwood palliation. We sought to determine the freedom from neo-aortic arch re-intervention and overall survival in patients who underwent Norwood palliation utilizing porcine small intestinal submucosa (PSIS) as the patch material.
METHODS: Retrospective chart review was performed to identify patients who underwent a Norwood operation utilizing PSIS material at our institution. Cardiac diagnosis, age at surgery, shunt type, need for re-intervention, and outcome (survival, transplant, and death) were evaluated.
RESULTS: Forty-four patients had PSIS material utilized for arch reconstruction at the time of Norwood palliation. There were only 5 (11.4%) neo-aortic arch re-interventions in 4 patients. An additional 10 re-interventions, unrelated to the PSIS patch, were performed, including 5 shunt revisions and 5 branch pulmonary artery interventions. There were 3 deaths and 5 patients were transplanted. Median follow-up was 387.5 days (range, 4-1513 days).
CONCLUSIONS: Freedom from neo-aortic arch re-intervention and survival following Norwood palliation with PSIS patch material is promising. PSIS appears non-inferior and may be an appropriate tissue choice for Norwood palliation. Studies with longer follow-up are needed to determine the rate of neo-aortic re-intervention over time.
Keywords: A congenital surgeon; Allograft; Anatomy; Aorta/aortic; Homograft; aortic arch