The Effect of Early Anticoagulation Therapy in Acute Pulmonary Embolism: A Retrospective Cohort Study in the Emergency Department

Out of 345 patients, 192 (55.6%) received early and 153 (44.4%) delayed anticoagulation. The mean age was 54.8 ± 15.2 years, with 215 (62.3%) males. Mortality was significantly lower in the early group, 14 patients (7.3%), compared to 26 patients (17.0%) in the delayed group (p = 0.006). Early anticoagulation also reduced recurrent thromboembolism, occurring in seven patients (3.6%) versus 14 patients (9.2%) in the delayed group (p = 0.03), as well as ICU admissions-47 patients (24.5%) versus 59 patients (38.6%), respectively (p = 0.008). The mean hospital stay was significantly shorter in the early group (5.8 ± 2.9 days) than in the delayed group (8.4 ± 3.6 days, p < 0.001). No significant difference in major bleeding events was observed between groups (p = 0.48). Conclusion: It is concluded that initiating anticoagulation within two hours of presentation significantly improves survival, decreases recurrence, and shortens hospital stay without increasing bleeding risk. Emergency departments should prioritize rapid diagnostic and treatment pathways to enable early anticoagulation, particularly in resource-limited settings.