Predisposition of Sex and Aging to Ruptured Intracerebral Aneurysms: a Retrospective Study by 3DRA
Keywords:
subarachnoid hemorrhage; three-dimensional rotational angiography (3DRA); postmenopausal women; aging; multiple intracranial aneurysmsAbstract
Background and Objectives: Elderly people and postmenopausal women tend to have ruptured intracranial aneurysm. At present, three-dimensional rotational angiography (3DRA) is the new gold standard to detect vascular pathology. Therefore, this study aimed to investigate the prevalence of non-traumatic subarachnoid hemorrhage (SAH) patients with ruptured intracranial aneurysms regarding to sex and age of the patients, number of ruptured and unruptured aneurysms and ruptured aneurysm sites, based on 3DRA.
Methods: This retrospective study was performed on 3DRA of non-traumatic SAH patients. The numbers of patients in aneurysmal and non-aneurysmal groups were compared. The numbers of intracranial aneurysmal patients regarding to sex, age, all ruptured and unruptured aneurysms, and ruptured aneurysm sites were recorded and analyzed.
Results: The prevalence of subjects with ruptured intracranial aneurysm was 72.22% of 126 enrolled SAH patients. Of 91 intracranial aneurysmal subjects, the prevalence of females was 71.43%, as high as 2.5 times that of male. The percentage of aneurysmal patients aged between 50-79 years was higher than that of the subjects aged between 20-49 years. The prevalence of subjects with multiple aneurysms appeared in 14.29% of aneurysmal patients and predisposed to the female. The patients with ruptured aneurysms located outside the circle of Willis (CW) comprised 31.87%.
Conclusion: The prevalence of SAH patients with ruptured intracranial aneurysms was high in elderly people, especially postmenopausal women. This study also revealed the higher percentage of SAH patients with multiple aneurysms and the higher frequency of patients with ruptured aneurysms located outside the CW than the previous reports.
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