• Dominic P Recco, Shannen B Kizilski, Gianna J Dafflisio, Reena M Ghosh, Pakaparn Kittichokechai, Kimberlee Gauvreau, Breanna Piekarski, Ashwin Prakash, and David M Hoganson.
• Department of Cardiac Surgery, Boston Children's Hospital, Boston, Mass; Harvard Medical School, Boston, Mass.
• J. Thorac. Cardiovasc. Surg. 2024 Sep 24.

BackgroundRates of reintervention (RI) after patch-augmented reconstruction for hypoplastic aortic arch (HAA) remain moderately high. We analyzed mid-term outcomes of aortic arch reconstruction to define modifiable reintervention risk factors.MethodsExcluding Damus-Kaye-Stansel anastomoses and previous arch repair, 338 patients underwent arch reconstruction between 2000 and 2021 at median age of 6 days (interquartile range [IQR], 4-13 days) and a median weight of 3.2 kg (IQR, 2.8-3.7 kg). Surgical technique was patch augmentation with coarctectomy with or without interdigitation in 269 patients (80%), isolated patch aortoplasty in 41 (12%), and other reconstruction in 28 (8%). Risk factors for reintervention were assessed using competing risk models.ResultsAt median follow-up of 3.9 years (IQR, 1.1-8.0 years), 35 patients (10.4%) required reintervention (endovascular, n = 30; surgical, n = 12; both, n = 7). The 10-year cumulative incidence of death/transplant was 10% (95% confidence interval [CI], 4%-20%), and that of and reintervention was 13% (95% CI, 8%-20%). On univariate analysis, isolated patch aortoplasty (P = .002), aortic homograft patch material (P = .006), and postoperative aortic size z-score ≤-2 for each segment were associated with greater risk of reintervention: ascending aorta (P = .006), proximal (P = .001) and distal (P = .005) transverse arches, and aortic isthmus (P < .001). On multivariable analysis, aortic homograft (hazard ratio [HR], 6.29; 95% CI, 1.94-20.5; P = .002) and postoperative isthmus z-score ≤-2 (HR, 10.5; 95% CI, 5.15-21.5; P < .001) remained significant. Patients with a repaired isthmus z-score ≤-2 had a 72.8% (95% CI, 44.6-94.4%) cumulative incidence of reintervention at 10 years, versus 6.8% (95% CI, 4.1%-11.4%) in those with a z-score >-2.ConclusionsAortic undersizing during patch-augmented reconstruction of HAA results in a >10% rate of reintervention at mid-term follow-up. Achieving adequate postoperative arch size is critical for preventing reintervention, with aortic isthmus size of utmost importance.Copyright © 2024 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

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