Results
blood loss
BLOOD LOSS
During the study, 39 patients in each group of VCV and PCV were analyzed. The variables of sex, age, height, weight, and body mass index (BMI) were not significantly different between VCV and PCV groups; hence, two groups were comparable and similar in terms of demographic and anthropometric profiles (Table Demographic and anthropometric profilesIn terms of number of surgical levels, although there were more patients with 4 levels in VCV group, two groups had no overall difference (Table Number of surgical procedure levels in studied groupsTable Mean blood loss in the studied groupsTen patients in VCV group and 9 cases in PCV group required transfusion of one or two units of packed-cell, with the median number of 2 units for both groups. The difference between number of packed-cell received by patients in two groups was not significant (Packed-cell units received by patientsIn terms of surgical field desirability, the surgeon evaluated 82.1% of PCV and 74.4% of VCV cases as “Good”; however, the difference between two groups was not significant (Surgeon satisfactionThe patients who needed antihypertensive agents during the surgery were just two cases in PCV group. Although this number in VCV group was twice, the statistical test did not indicate a significant difference between two groups (Need for antihypertensive drugs during the surgeryLike before surgery, measurement of mean hemoglobin in patients of two groups after the surgery showed no significant difference between two groups (Table Mean hemoglobin of patients before and after surgery in the study groupsThere were no significant differences between measurements of mean heart rate in two groups. Values of systolic blood pressure were also similar in two groups. However, diastolic blood pressure 90 and 105 min. after induction were significantly lower in PCV group (Diastolic blood pressure in studied groups throughout operative time