Small ruptured aneurysms (<5 mm) have distinct demographic and risk factor profiles compared to larger aneurysms in patients with subarachnoid hemorrhage.
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Small aneurysms rupture despite guidelines; leaves open need for refined risk stratification in prospective cohorts.
OBJECTIVE: Small unruptured aneurysms (<5 mm) are known for their very low risk of rupture, and are recommended to be treated conservatively. However, we encounter many patients with small ruptured aneurysms in the clinical practice. We aimed to investigate the incidence and characteristics of patients with small ruptured aneurysms. METHODS: We reviewed all patients admitted to our hospital with subarachnoid hemorrhage from January 2005 to December 2015. The patients were divided into two groups: those with aneurysms <5 mm (group S) and those with aneurysms ≥5 mm (group L). The patient's age and sex, size and location of aneurysms, and risk factors such as hypertension, diabetes, alcohol use, and smoking were compared between the two groups. CONCLUSION: In this study, small (<5 mm) ruptured aneurysms exhibited different incidences by age, sex, location, and risk factors such as multiplicity, smoking, and alcohol use.
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Choi et al. (2017) studied this question.
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