Forty patients met the eligibility criteria for the study. Of the 40 patients (29 males, 11 females) whose charts were reviewed, the average age was 65.0 ± 8.6 (range 40–79) years. Group T included 20 patients (15 males, 5 females) with a mean age of 65.6 ± 7.8 years, who had been using telmisartan 80 mg daily for at least six months. Group N-T included 20 patients (14 males, 6 females) with a mean age of 64.4 ± 9.5 years, who used no angiotensin receptor blocking agent prior to the operation. The groups were similar with regard to age and gender (p = 0.680 and p = 0.723, respectively).