• From theDepartment of Neurology, Valie-Asr Hospital, Southern Khorasan University of Medical Sciences, Birjand, Iran , kavianghandehari@yahoo.com
Abstract: (4791 Views)
Silent Brain Infarcts (SBI) are associated with an increased risk of subsequent
stroke. SBI are incidentally revealed by CT or MRI executed in stroke patients.
A prospective study was undertaken involving 200 consecutive patients aged >45
years with brain infarct admitted in University of Alberta Hospital, Canada (100 patients)
and Valie-Asr Hospital, Iran (100 patients) in 2003. Patients were divided in age
groups aged <65 and >65. All of the patients underwent brain CT. A stroke neurologist
with knowledge of stroke history subsequently reviewed the scans and diagnosed SBI.
The relations of race, gender and age groups with SBI were analyzed with chi-square
and Fisher exact tests.
SBr were present in 26.9% of patients aged <65 and 48.6% of patients aged
>65. Canadian patients were significantly more preponderant to SBI in age group> 65
(p= 0.013). The mean age of Canadian patients was significantly higher than Persians
(p<0.001). Within a total of 200 patients the female gender was significantly more
preponderant to SBr (p= 0.02) which was not related to age and race groups. Small
vessel territory infarct was present in 87 % of our patients with SBI.
SBr are cornmon in stroke patients. The frequency of SBI is higher in female
gender and the elderly.