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Surgical repair of subaortic stenosis resection: 10 years of single-center experience in 65 patients
  • +3
  • Yuefeng Cao,
  • Shuang Yang,
  • Wenxiu Li,
  • Lei Li,
  • Junwu Su,
  • Xiangming Fan
Yuefeng Cao
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Shuang Yang
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Lei Li
Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, No. 2 Anzhen Rd, Chaoyang District, Beijing 100029, China.
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Junwu Su
Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, No. 2 Anzhen Rd, Chaoyang District, Beijing 100029, China.
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Xiangming Fan
Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, No. 2 Anzhen Rd, Chaoyang District, Beijing 100029, China.
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Abstract

Abstract Background Subaortic stenosis (SAS) was a rare congenital heart disease of left ventricular outflow tract (LVOT), ranging from “isolated” lesions to “tunnel” or “diffuse” lesions. We conducted a retrospective study to describe the characteristics of patients with different lesions and analyze the risk factors for reoperation. Methods In this study, we examined a single-center retrospective cohort of SAS patients undergoing resection from 2010 to 2019. Patients were classified as simple lesion group (n = 37) or complex lesion group (n = 28). Demographics, perioperative findings, and clinical data were analyzed. Results The surgical effect of the two groups was significantly lower than that before the operation (p <0.05). The median age at operation was 6(3-11.8) years. There was no operative mortality. In complex lesion group, extracorporeal circulation time (CPB time), aortic cross clamp time (ACC time), mechanical ventilation time and ICU stay time were longer. The median follow-up period was 2.8 years (range 1-3.8), with two late death. Six patients (9.2%) required reoperation due to restenosis or severe aortic insufficiency. The freedom from reoperation rates at 5 years was 66.7% for simple lesion but only 52.3% for complex lesion (p = 0.036). Conclusions Although the lesions include many forms, subaortic stenosis resection was still satisfactory. However, the reoperation after initial surgical treatment was not infrequent, especially in patients with complex lesion.

Peer review status:IN REVISION

14 May 2021Submitted to Journal of Cardiac Surgery
17 May 2021Assigned to Editor
17 May 2021Submission Checks Completed
17 May 2021Reviewer(s) Assigned
05 Jun 2021Review(s) Completed, Editorial Evaluation Pending
06 Jun 2021Editorial Decision: Revise Major