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  • Title: Cardiovascular Outcomes with SGLT-2 inhibitors in patients with heart failure with or without type 2 diabetes: A systematic review and meta-analysis of randomized controlled trials.
    Author: Singh AK, Singh R.
    Journal: Diabetes Metab Syndr; 2021; 15(1):351-359. PubMed ID: 33503584.
    Abstract:
    BACKGROUND AND AIMS: We conducted a systematic review and meta-analysis of all the randomized controlled trials (RCTs) with SGLT-2 inhibitors (SGLT-2i) in patients with known heart failure (HF) with or without type 2 diabetes (T2DM), that have studied the outcomes of cardiovascular (CV) death, hospitalization due to HF (HHF), and composite of CV death or HHF. METHODS: A systematic search in PubMed, Embase and Cochrane Library database were made up till November 20, 2020 using specific keywords. RCTs that qualified underwent a meta-analysis by applying the inverse variance-weighted averages of pooled logarithmic hazard ratio (HR) using both random- and fixed-effects model. RESULTS: This meta-analysis of 9 RCTs (N = 19,741) have found a significant 26% relative risk reduction in composite of CV death or HHF (HR 0.74; 95% CI, 0.69-0.79; p < 0.001) with SGLT-2i in patients with HF. The meta-analysis of 8 RCTs (N = 16,460) also showed a significant reduction in CV death (HR 0.86; 95% CI, 0.78-0.95; p = 0.003) and HHF (HR 0.68; 95% CI, 0.62-0.74; p < 0.001) outcomes with SGLT-2i in patients with HF. Subgroup analysis stratified on baseline ejection fraction (EF) showed a similar benefit in the composite of CV death or HHF in patients with HF with reduced EF (HFrEF) or preserved EF (HFpEF). CONCLUSIONS: SGLT-2i significantly reduces the composite of CV death or HHF, CV death, and HHF in patients with HF. Although subgroup analysis suggested an insignificant Pheterogenity for these outcomes irrespective of the types of HF, however, reduction in both CV death and HHF were more pronounced in patients with HFrEF.
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