Prognostic Impact of Insulin-Treated and Non–Insulin-Treated Diabetes in Patients with a Reduced Ejection Fraction After ST-Elevation Myocardial Infarction

IF 2.5 Q2 CARDIAC & CARDIOVASCULAR SYSTEMS

CJC Open Pub Date : 2025-01-01 DOI:10.1016/j.cjco.2024.10.001

Lidija Savic MD, PhD , Igor Mrdovic MD, PhD , Milika Asanin MD, PhD , Sanja Stankovic PhD , Ratko Lasica MD, PhD , Gordana Krljanac MD, PhD , Damjan Simic MD

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Abstract

Background

Insulin- and non–insulin treated diabetes (ITDM and NITDM) have different prognostic impact in patients with myocardial infarction and/or heart failure. The aim of this study was to analyze the prognostic impact of ITDM and NTIDM on the incidence of all-cause mortality and major adverse cardiovascular events (MACE— cardiovascular death, nonfatal infarction, nonfatal stroke, and target vessel revascularization) in the 8-year follow-up of patients with ST-segment elevation myocardial infarction (STEMI) with a reduced ejection fraction (EF).

Methods

We analyzed 2230 consecutive STEMI patients treated with primary percutaneous coronary intervention and with EF < 50%. Echocardiographic examination was performed after primary percutaneous coronary intervention . Patients were divided into 3three groups: those with ITDM, those with NITDM, and those with no DM. Patients presenting with cardiogenic shock were excluded.

Results

The incidence of DM was 20.7%; among the patients with DM, 103 (22.3%) had ITDM. Patients with ITDM and NITDM had a higher incidence of mortality and MACE, compared with patients without DM. Also, at 8-year follow-up, the incidences of all-cause mortality and MACE were significantly higher in patients with ITDM vs patients with NITDM (37.8% vs 13.1%, P < 0.001 and 40.8% vs 18.9%, P < 0.001, respectively). Multivariable analysis showed ITDM to be an independent predictor for long-term mortality (hazard ratio 1.76, 95% confidence interval 1.15-2.69), and MACE (hazard ratio 1.72, 95% confidence interval 1.15-2.62).

Conclusions

ITDM was an independent predictor of the occurrence of long-term mortality and MACE in patients with STEMI and reduced EF. NITDM was not an independent predictor for the occurrence of adverse events in analyzed patients.

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