Patient presenting to the outpatient center for neurological of neurosurgical management of intracerebral aneurysm will be recruited. Sleep apnea will be assessed by questionnaire and out of center polygraph/polysomnography. Medication, comorbidities and blood pressure will be recorded. Change in aneurysm size and blood pressure medication will be evaluated annually for up to 5 years. Frequency of subarachnoid hemorrhage and increase in aneurysm size will be assessed.
Patients with intracerebral aneurysm will be screened for sleep apnea using out of center polysomnography/polygraphy. Baseline blood pressure and medication will be assessed. Patients will be followed for up to 5 years to examine the increase in aneurysm size, rupture rate and changes in medication.