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  • Title: Comparing outcomes between valve-sparing root replacement and the Bentall procedure in proximal aortic aneurysms: systematic review and meta-analysis.
    Author: Salmasi MY, Theodoulou I, Iyer P, Al-Zubaidy M, Naqvi D, Snober M, Oo A, Athanasiou T.
    Journal: Interact Cardiovasc Thorac Surg; 2019 Dec 01; 29(6):911-922. PubMed ID: 31504555.
    Abstract:
    In aortic root aneurysms, the challenge of a valve-sparing aortic root replacement (VSRR) procedure is to ensure durable aortic valve function without reintervention. Although the Bentall procedure defers the durability of valve function to the prosthesis, short- and long-term complications tend to be higher. The aim of this study was to compare the outcomes of VSRR and Bentall procedures in patients with aortic root aneurysms. A systematic literature review was conducted using PubMed regarding the outcomes of the Bentall procedure compared with those of VSRR from the inception of the 2 procedures until July 2018. Studies with short- and long-term comparative data were included. An initial search yielded 9517 titles. Thirty-four studies were finally included for meta-analysis (all retrospective, non-randomized), comprising 7313 patients (2944 valve-sparing and 4369 Bentall procedures) with no evidence of publication bias. Operative mortality was found to be significantly lower in the VSRR group [odds ratio (OR) 0.51, 95% confidence interval (CI) 0.37-0.70; P < 0.001] despite overall higher cardiopulmonary bypass and aortic cross-clamp times. The 5-year survival rate was also more favourable in the VSRR group (OR 1.93 95% CI 1.15-3.23; P < 0.05). Significantly lower rates of cerebral thromboembolism (OR 0.668, 95% CI 0.477-0.935; P = 0.019) and heart block (OR 0.386, 95% CI 0.195-0.767; P = 0.007) were also found after VSRR. There was no significant difference in rates of reoperation between the groups at long-term follow-up (OR 1.32, 95% CI 0.75-2.33; P = 0.336). Meta-regression of patient and operative covariates yielded no influence on the main outcomes (P > 0.05). These findings suggest that VSRR is an appropriate and potentially better treatment option for a root aneurysm when the aortic valve is repairable.
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