Why the study?
To explore whether TEVAR plus distal bare metal stent implantation leads to favorable clinical outcomes compared with standard TEVAR in treating acute complicated type B aortic dissection.
Does TEVAR plus distal bare metal stent implantation reduce adverse events and secondary interventions compared to standard TEVAR in patients with acute complicated type B aortic dissection?
Does TEVAR plus distal bare metal stent implantation reduce adverse events and secondary interventions compared to standard TEVAR in patients with acute complicated type B aortic dissection?
Adjunctive distal bare metal stent implantation during TEVAR for complicated type B aortic dissection reduces unplanned secondary interventions and postoperative adverse events without significantly affecting mortality.
Objective To explore whether thoracic endovascular aortic repair (TEVAR) plus distal bare metal stent (BMS) implantation leads to favorable clinical outcomes compared with standard TEVAR in treating acute complicated type B aortic dissection. Methods Relevant publications were found through a precise search of PubMed, Cochrane Library, and EMBASE. Count data were calculated as the odd ratio (OR)and 95% confidence interval (CI) using the Mantel–Haenszel statistical method, quantitative data were calculated as mean difference and 95% CI using Inverse Variance statistical method. When the data heterogeneity was large, with an I 2 > 50%, a random-effects model and sensitivity analysis were performed. The analysis tool we used was the software Revman 5.3 and G*power 3.1. Results There were 7 publications involving 958 patients who were enrolled ultimately. The incidence of unplanned secondary intervention and postoperative adverse events in the TEVAR + BMS were lower than standard TEVAR (OR, 0.42, (95% CI, 0.23 to 0.75); OR, 0.57, (95% CI, 0.37 to 0.90)), and the pooled number needed to treat was 15 for unplanned secondary intervention and 15 for postoperative adverse events. There were no significant difference in the aortic-related or all-cause 30-day mortality (OR, 0.81, (95% CI, 0.25 to 2.61); OR, 0.47, (95% CI, 0.18 to 1.22)), aortic-related, all-cause mortality at least 6 months or incidence of the postoperative endoleak (OR, 0.47, (95% CI, 0.17 to 1.32); OR, 0.42, (95% CI, 0.17 to 1.06); OR, 0.81, (95% CI, 0.32 to 2.05)). Conclusion There is no significant outcome difference except for reduced reintervention but this does not seem to adversely affect survival. It is unclear whether this justifies the additional cost of placing it in every complicated type B aortic dissection regardless of anatomy after standard TEVAR alone. Besides, more data are needed to verify the adjunctive distal bare metal stents’ performance at different dissection stages.
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Kong et al. (2020) studied this question.
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