Sex disparities in myocardial infarction related cardiogenic shock.

Background: Women are underrepresented In cardiovascular disease research, constituting only 30 % of the cardiogenic shock (CS) population. Consequently, guidelines are mainly based on male patients. This study aims to comprehensively examine the sex-specific aspects of acute myocardial infarction (AMI)-related CS, encompassing presentation, treatment and outcomes.

Methods: Patients with CS undergoing percutaneous coronary intervention (PCI) between 2017 and 2021 were identified using the national Netherlands Heart Registration. Mortality was assessed using the Kaplan Meier method, and logistic regression was performed to investigate differences in clinical management between sexes. Furthermore, a sensitivity analysis excluding patients with out-of-hospital cardiac arrest (OHCA) was conducted.

Results: Among 2274 patients, 614 (27 %) were female. Women were older (70 vs. 66 years, p < 0.001) and presented with longer symptom duration (> 3 h: 52 % vs. 37 %, p < 0.001). Men more often presented with multivessel disease (62 % vs. 56 %, p < 0.001), a prior myocardial infarction (23 % vs. 15 %, p < 0.001) and after an OHCA (46 % vs. 29 %, p < 0.001). A trend towards more usage of mechanical circulatory support in men was observed (adjusted OR 0.86, 95 % CI 0.67-1.09). Mortality, both adjusted and unadjusted, was not statistically different for men and women.

Conclusion: Women with CS present with distinct clinical characteristics, including longer symptom duration, underscoring the importance of symptom recognition. Furthermore, men present at younger age and with more OHCA. Mortality in men and women was similar despite differences in presentation and clinical management.