In-Hospital Outcomes of ST-Segment Elevation Myocardial Infarction in COVID-19 Positive Patients Undergoing Primary Percutaneous Intervention.

Background: Concomitant coronavirus 2019 (COVID-19) infection and ST-segment elevation myocardial infarction (STEMI) are associated with increased adverse in-hospital outcomes.

Objectives: This study aimded to evaluate the angiographic, procedural, laboratory, and prognostic differences in COVID-19-positive and negative patients with STEMI undergoing primary percutaneous coronary intervention (PCI).

Methods: A single-center, retrospective, observational study was conducted between November 2020 and August 2022 in a tertiary-level hospital. According to their status, patients were divided into two groups (COVID-19 positive and negative). All patients were admitted due to confirmed STEMI and treated with primary PCI. In-hospital and angiographic outcomes were compared between the two groups. Two-sided p-values < 0.05 were accepted as statistically significant.

Results: Of the 494 STEMI patients enrolled in this study, 42 were identified as having a positive dagnosis for COVID-19 (8.5%), while 452 were negative. The patients who tested positive for COVID-19 had a longer total ischemic time than did those who tested negative for COVID-19 (p=0.006). Moreover, these patients presented an increase in stent thrombosis (7.1% vs. 1.7%, p=0.002), length of hospitalization (4 days vs. 3 days, p= 0.018), cardiogenic shock (14.2% vs. 5.5 %, p= 0.023), and in-hospital total and cardiac mortality (p<0.001 and p=0.032, respectively).

Conclusions: Patients with STEMI with concomitant COVID-19 infections were associated with increased major adverse cardiac events. Further studies are needed to understand the exact mechanisms of adverse outcomes in these patients.