AI Article Synopsis
- The study investigates the effectiveness of revascularization combined with optimal medical therapy (OMT) versus OMT alone for patients with stable ischemic heart disease (SIHD), using a Bayesian approach to assess risks.
- Out of several trials reviewed, the findings indicate minimal differences in all-cause and cardiac mortality rates between the two treatment options, suggesting that revascularization does not significantly improve these outcomes.
- However, revascularization may lead to lower risks of heart attacks and unstable angina, while also increasing the likelihood of stroke compared to OMT alone.
Article Abstract
Background: The role of revascularization in patients with stable ischemic heart disease (SIHD) has been controversial, more so in the present era of drug-eluting stents.
Aims: To examine the absolute risk difference (ARD) between revascularization plus optimal medical therapy (OMT) versus OMT alone among patients with SIHD using Bayesian approach.
Methods: PubMed/MEDLINE and Cochrane citation indices were utilized to identify randomized controlled trials (RCTs) through March 31, 2020. Among trials comparing initial revascularization plus OMT with initial OMT alone, revascularization arm must have comprised >50% of patients receiving either percutaneous or surgical revascularization, and >50% of patients must have received aspirin and statin as OMT in both arms.
Results: Seven RCTs (12,494) were included in the final analysis. The ARD of all-cause mortality for revascularization with respect to OMT was centred at -0.002 (95% CrI: -0.01; 0.01, Tau: 0.01, 67% probability of ARD of revascularization vs. OMT < 0). The ARD for cardiac mortality was centred at -0.0025 (95%CrI: -0.01; 0.01, Tau: 0.01, 77% probability of ARD of revascularization vs. OMT < 0). The ARD for MI was -0.02 (95% CrI: -0.06; 0.00, Tau: 0.02, 97% probability of ARD for revascularization vs. OMT < 0). There was 96% probability of ARD for unstable angina with revascularization vs. OMT < 0, 4.5% probability of ARD for freedom from angina with revascularization vs. OMT < 0, and 6% probability of ARD for stroke with revascularization vs. OMT < 0.
Conclusions: Bayesian analysis demonstrated minimal probability of difference in all-cause mortality and cardiac mortality in patients with SIHD who underwent revascularization compared with OMT alone. However, revascularization was associated with lower probability of MI, unstable angina, and increased freedom from angina, but a higher risk of stroke compared with OMT alone.
Prospero: The protocol of this systematic review and meta-analysis was registered in PROSPERO [CRD42020160540].
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| http://dx.doi.org/10.1016/j.carrev.2021.12.005 | DOI Listing |
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