Spontaneous and iatrogenic dehydration in the elderly alone or in combination with antiplatelet/anticoagulation agents and risk of subdural hematoma

Background and Purpose: To evaluate the role of preadmission conditions, dehydration specifically, in the development of subdural hematoma in the elderly. Methods: Retrospective chart review. Results: The most prevalent pre-admission medical condition was hypertension, followed by atrial fibrillation, CAD, hyperlipidemia, diabetes, and cancer. Out of 95 patients, 69 (73%) had features of dehydration, 27% were on diuretics and 28% were on antiplatelet agents and anticoagulation. Conclusions: Elderly population is prone to dehydration. Overzealous use of diuretics especially in combination with anticoagulation or antiplatelet therapy can contribute to the development of subdural hematomas, both spontaneous and traumatic.