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Severely injured elderly patients have a poorer prognosis and higher mortality rates after severe trauma compared with younger patients. The aim of this study was to correlate the influence of pre-existing oral anticoagulation (OAC) and antiplatelet drugs (PAI) on the outcome of severely injured elderly patients. Methods: Using a prospective cohort study model over an 11-year period, severely injured elderly patients (≥65 years and ISS ≥ 16) were divided into two groups (no anticoagulation/platelet inhibitors: nAP and OAC/PAI). A comparison of the groups was conducted regarding injury frequency, trauma mechanism, severity of head injuries, and medication-related mortality. Results: In total, 254 out of 301 patients were analyzed (nAP:  n  = 145; OAC/PAI:  n  = 109, unknown data:  n  = 47). The most relevant injury was falling from low heights (<3 m), which led to a significantly higher number of severe injuries in patients with OAC/PAI. Patients with pre-existing OAC/PAI showed a significantly higher overall mortality rate compared to the group without (38.5% vs. 24.8%;  p  = 0.019). The severity of head injuries in OAC/PAI was also higher on average (AIS 3.7 ± 1.6 vs. 2.8 ± 1.9;  p  = 0.000). Conclusion: Pre-existing oral anticoagulation and/or platelet aggregation inhibitors are related to a higher mortality rate in elderly polytrauma patients. Low-energy trauma can lead to even more severe head injuries due to pre-existing medication than is already the case in elderly patients without OAC/PAI.

Influence of Oral Anticoagulation and Antiplatelet Drugs on Outcome of Elderly Severely Injured Patients