Sex differences in cardiac structure and function following ST-segment elevation myocardial infarction.

Area of Science:

• Cardiology
• Cardiovascular Research
• Clinical Medicine

Background:

• Post-STEMI cardiac remodelling significantly impacts long-term patient outcomes.
• Existing research highlights sex disparities in STEMI presentation, treatment, and outcomes, but less is known about sex-specific cardiac remodelling.
• Understanding these differences is crucial for tailored patient management.

Purpose of the Study:

• To investigate sex-based differences in cardiac remodelling following STEMI.
• To compare the evolution of cardiac structure and function between women and men post-myocardial infarction.
• To assess if baseline sex differences influence long-term remodelling trajectories.

Main Methods:

• Analysis of 379 patients (95 women, 284 men) from the GIPS-III trial (metformin vs. placebo in STEMI without diabetes).
• Transthoracic echocardiography performed during hospitalization and at four months post-STEMI.
• Evaluation of left ventricular dimensions, volumes, ejection fraction, E/e' ratio, and adverse remodelling incidence.

Main Results:

• Women had higher rates of hypertension, lower hemoglobin, and elevated NT-proBNP compared to men.
• Women presented with smaller LV dimensions/volumes and higher LVEF, but similar adverse remodelling rates and LV geometry at four months.
• Despite baseline differences, cardiac remodelling trajectories over four months did not significantly differ between sexes.

Conclusions:

• While baseline cardiac characteristics post-STEMI differ between sexes, the subsequent remodelling process appears broadly similar.
• These findings suggest current post-STEMI monitoring and management strategies may be applicable across sexes.
• Further research could explore the clinical implications of these similar remodelling patterns.