Abstract
Dipeptidyl peptidase 4 (DPP-4) inhibitors are new antidiabetic drugs. Their effects on the respiratory system remain unclear. This study aimed to determine the association between DDP-4 inhibitors and acute respiratory failure (ARF) among patients with type 2 diabetes mellitus (T2DM). A meta-analysis was performed by searching the PubMed, Embase, and CENTRAL databases up to July 3rd, 2024, to identify randomized controlled, double-blind, and placebo controlled-cardiovascular outcomes trials (CVOTs) that enrolled participants with T2DM. A total of 6,532 studies were initially retrieved; ultimately, 5 large CVOTs enrolling 47,714 adult T2DM patients were included in the meta-analysis. Overall, there were a nonsignificant increase in the risk of ARF in the DDP-4 inhibitor group compared with the placebo group (RR, 1.72; 95% CI, 0.59 to 4.97; p = 0.319). This is the first meta-analysis to evaluate the association between DDP-4 inhibitors and ARF among T2DM patients. In general, these findings suggest that DPP-4 inhibitors may slightly, but non-significantly, increase the risk of ARF in T2DM patients. As few studies are available and few ARF events occurred, further well-designed large-scale studies need to be performed.
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