Abstract
Our study aimed to elucidate the impact of sodium-glucose cotransporter-2 inhibitor on left ventricular systolic function using global longitudinal strain in type 2 diabetes mellitus patients and to assess its protective effect depending on disease duration. Type 2 diabetes mellitus patients treated at our institute were included. According to whether sodium-glucose cotransporter-2 inhibitor was used in drug treatment, the patients were divided into SGLT2i group and control group, and propensity score matching was performed. For subgroup analysis, patients were further classified based on disease duration (1-5 years, 5-10 years, and 10-20 years). A total of 256 patients with type 2 diabetes mellitus were enrolled. Significantly better global longitudinal strain results were observed at the 6-month follow-up in the SGLT2i group than those of the control group and its baseline (p < 0.001). A significantly lower proportion of subclinical cardiac dysfunction was observed in the SGLT2i group (p < 0.001). Significantly greater global longitudinal strains were observed in the SGLT2i subgroups compared with control subgroups (p all < 0.05). Furthermore, sodium-glucose cotransporter-2 inhibitor use and epicardial adipose tissue thickness change were independently associated with global longitudinal strain change according to multivariate analysis. Sodium-glucose cotransporter-2 inhibitor significantly improved left ventricular function in type 2 diabetes mellitus patients without cardiovascular complications, regardless of disease duration, with more prominent outcomes observed in patients with early-stage disease.