Is early use of sodium‑glucose cotransporter type 2 inhibitor (SGLT2i) necessary even in diabetic patients without cardiovascular disease: a prospective study regarding the effect of SGLT2i on left ventricular diastolic function
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Background There are insufficient studies to determine whether sodium-glucose cotransporter type 2 inhibitors (SGLT2i) will help reduce early diabetic cardiomyopathy, especially in patients without documented cardiovascular disease. Methods We performed a single center, prospective observation study. A total of 90 patients with type 2 diabetes patients without established heart failure or atherosclerotic cardiovascular disease were enrolled. Echocardiography, cardiac enzyme, and glucose-control data were examined before and 3 months after the administration of SGLT2i (dapagliflozin 10 mg per day). Cardiovascular risk factors included hypertension, smoking, obesity, dyslipidemia, and old age. The primary end point was the change of E/e’ before and after administration of SGLT2i. Results Most patients (86.7%) had three or more cardiovascular risk factors, and about 32% had all five risk factors. Although the decrease in E/e’ after the administration of SGLT2i was observed in 20% of enrolled patients, there was no significant difference in average E/e’ value or left atrial volume index before and after the SGLT2i medication. Even in patients with all known risk factors including old age, E/e’ value did not decrease after adding SGLT2i (8.9 ± 2.4 vs. 8.7 ± 3.2). There was a statistically significant difference in E/e’ change after the SGLT2i administration between patients younger than 60 years and those older than 60 years (–0.7 ± 2.2 vs. 1.1 ± 2.8, P = 0.002). Conclusions In type 2 diabetes patients without documented cardiovascular disease including heart failure, administration of SGLT2i showed no improvement in diastolic function profile. Further large-scale randomized studies are needed to determine who will benefit from potential cardiovascular events with early addition of SGLT2i.
Abstract
Background There are insufficient studies to determine whether sodium-glucose cotransporter type 2 inhibitors (SGLT2i) will help reduce early diabetic cardiomyopathy, especially in patients without documented cardiovascular disease. Methods We performed a single center, prospective observation study. A total of 90 patients with type 2 diabetes patients without established heart failure or atherosclerotic cardiovascular disease were enrolled. Echocardiography, cardiac enzyme, and glucose-control data were examined before and 3 months after the administration of SGLT2i (dapagliflozin 10 mg per day). Cardiovascular risk factors included hypertension, smoking, obesity, dyslipidemia, and old age. The primary end point was the change of E/e’ before and after administration of SGLT2i. Results Most patients (86.7%) had three or more cardiovascular risk factors, and about 32% had all five risk factors. Although the decrease in E/e’ after the administration of SGLT2i was observed in 20% of enrolled patients, there was no significant difference in average E/e’ value or left atrial volume index before and after the SGLT2i medication. Even in patients with all known risk factors including old age, E/e’ value did not decrease after adding SGLT2i (8.9 ± 2.4 vs. 8.7 ± 3.2). There was a statistically significant difference in E/e’ change after the SGLT2i administration between patients younger than 60 years and those older than 60 years (–0.7 ± 2.2 vs. 1.1 ± 2.8, P = 0.002). Conclusions In type 2 diabetes patients without documented cardiovascular disease including heart failure, administration of SGLT2i showed no improvement in diastolic function profile. Further large-scale randomized studies are needed to determine who will benefit from potential cardiovascular events with early addition of SGLT2i.