Variation of EEG According to Location of Aneurysm in ubararachnoid Hemorrhage

Abstract Some changes are present in ECG of about %90 of patients with subarachnoid hemorrhage (SAH) who are admitted due to cerebral aneurysm . The most common site of these lesions amoung the cerebral arteries is anterior cerebral arteries which supplies autonomic cardiovascular c. centers. It seems that the location of aneurysm is effective on variability of ECG manifestation and there is not refer to this important point in our refences. This prospective, cross-seetional study was done on 94 patients , presenting with SAH due to cerebal aneurysm which their angiographies detected the location of pathology during 1374-1379. ECG of these patients was taken two times, one on admission and other on discharge -after 3rd week of admission. The mean age of cases was 52.1 years old and this group was composed of 54 male and 40 females. In patients who have aneurysm based on brain angiographies, more ECG changes are present (P<0.001). The most changes of ECG were in the anterior cerebral artery aneurysms (P<0.001). Q-TC changes observed in 46 cases in form of prolonged Q-TC interval in admission and 14 cases at the time of discharging which these differences are statistically significant (P<0.001). ST changes observed in 24 cases at first day and 2 cases at the day of discharge which are statistically significant (P<0.001). T wave changes were observed as T tall or severe inverting in st cases on admission and 11 cases on the time of discharge which are statistically significant (P<0.001). Attention to ECG of nontraumatic SAH patients could have indirect role in management of this Patients