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Meta-Analysis of Gender Disparities in In-hospital Care and Outcomes in Patients with ST-Segment Elevation Myocardial Infarction

Shah T, Haimi I, Yang Y, Gaston S, Taoutel R, Mehta S, et al.

Am J Cardiol, 2021 05 15;147:23-32.
PMID: 33640366 DOI: 10.1016/j.amjcard.2021.02.015

Gender disparities in ST-segment elevation myocardial infarction (STEMI) outcomes continue to be reported worldwide; however, the magnitude of this gap remains unknown. To evaluate gender-based discrepancies in clinical outcomes and identify the primary driving factors a global meta-analysis was performed. Studies were selected if they included all comers with STEMI, reported gender specific patient characteristics, treatments, and outcomes, according to the registered PROSPERO protocol: CRD42020161469. A total of 56 studies (705,098 patients, 31% females) were included. Females were older, had more comorbidities and received less antiplatelet therapy and primary percutaneous coronary intervention (PCI). Females experienced significantly longer delays to first medical contact (mean difference 42.5 min) and door-to-balloon time (mean difference 4.9 min). In-hospital, females had increased rates of mortality (odds ratio [OR] 1.91, 95% confidence interval [CI] 1.84 to 1.99, p <0.00001), repeat myocardial infarction (MI) (OR 1.25, 95% CI 1.00 to 1.56, p=0.05), stroke (OR 1.67, 95% CI 1.27 to 2.20, p <0.001), and major bleeding (OR 1.82, 95% CI 1.56 to 2.12, p <0.00001) compared with males. Older age at presentation was the primary driver of excess mortality in females, although other factors including lower rates of primary PCI and aspirin usage, and longer door-to-balloon times contributed. In contrast, excess rates of repeat MI and stroke in females appeared to be driven, at least in part, by lower use of primary PCI and P2Y12 inhibitors, respectively. In conclusion, despite improvements in STEMI care, women continue to have in-hospital rates of mortality, repeat MI, stroke, and major bleeding up to 2-fold higher than men. Gender disparities in in-hospital outcomes can largely be explained by age differences at presentation but comorbidities, delays to care and suboptimal treatment experienced by women may contribute to the gender gap.
Clinical Outcomes and Practicality of Transferring Patients Immediately to Originating Hospitals After Primary Percutaneous Coronary Intervention-A Retrospective Study

Kamaraj S, Firdaus ML, Norfarahdina R, Muizz AMA, Ranga ARA, Henry TD, et al.

Catheter Cardiovasc Interv, 2024 Nov 15.
PMID: 39548661 DOI: 10.1002/ccd.31290

BACKGROUND: Primary Percutaneous Coronary Intervention (PPCI) is the preferred treatment for ST-Segment Elevation Myocardial Infarction (STEMI) patients in both PCI centers and those transferred from non-PCI centers, provided it can be performed in a timely manner. The challenges in transferring patients from non-PCI centers include not only potential delays beyond 120 min but also the risk of overwhelming the resources at the PPCI hospital. We report a novel strategy implemented within the Serdang STEMI Network involving immediate transfer of patients back to the originating hospitals within 2 h post procedure.
AIMS: This study aims to evaluate the clinical outcomes and practicality of immediately transferring stable STEMI patients back to their originating hospitals within 2 h postprimary PCI, within the Serdang STEMI Network. Specifically, it seeks to assess the in-hospital mortality rate and 30-day major adverse cardiac events (MACE) among these patients to determine the safety and feasibility of this novel early transfer strategy.
METHODS: This retrospective cohort study involved 1374 STEMI patients participating in the Serdang STEMI network from May 2015 to December 2022, including 570 patients admitted directly to Hospital Sultan Idris Shah, Serdang (HSIS) and 804 transferred from non-PCI centers.
RESULTS: Of the 804 transferred patients, 415 (52%) were transferred back to referring hospitals within 2 h of PPCI. These patients met specific criteria including hemodynamic stability, absence of procedural complications, and fit for transfer at the discretion of the attending cardiologist. The primary outcomes measured were in-hospital and 30-day mortality rates, as well as major adverse cardiac events (MACE). MACE was defined as a composite of death, myocardial infarction, stroke, or repeat revascularization. In the early return group, there was no in-hospital or 30-day mortality. No patient required repeat revascularization or readmission within 30 days.
CONCLUSIONS: Our results indicate that carefully selected patients can be safely returned to their originating hospitals very early following successful PPCI. These findings have important implications for large regional STEMI networks worldwide, particularly in areas where PPCI centers may have limited resources to handle high STEMI volumes.

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