Objective To investigate the effect of positions on cerebral vascular resistance index andarterial blood flow volume during laparoscopic surgery. Methods Sixty female patients who underwent laparoscopic surgery in the First Affiliated Hospital of Wannan Medical College from January to July 2020 were selected as the research objects. According to the random number table method, they were divided into the experimental group (Group T) and the control group (Group R). Group T was adjusted to the Trendelenburg position (-30°) according to the need of intraoperative various position;Group R was the reverse-Trendelenburg position with left tilting (30°), with 30 cases in each group. The resistance index of the internal carotid arteries and vertebral arteries and the cerebral arterial blood flow volumewere measured with Doppler ultrasound at the following time points:T1 (5 minutes after insertion of the laryngeal mask), T2 (position change 0 minute), T3 (30 minutes after position change), T4 (10 minutes after recovery horizontal position). HR, MAP and PETCO2 were observed and compared between the two groups at T1~T4. Results The resistance index of bilateral internal carotid arteries and vertebral arteries were significantly different between the two groups (P<0.05), and there were time and interaction effects. The resistance index of the bilateral internal carotid arteries and vertebral arteries in Group T was higher than that in Group R at T2~T4 (P<0.05). Compared with T1, the resistance index of the right vertebral arteries and left internal carotid arteries was higher in group T at T2~T3. There was no significant difference in the cerebral arterial blood flow volume between the two groups (P>0.05). The cerebral arterial blood flow volume of group T was significantly higher than that of group R patients at T2 (P<0.05). Compared with T1, the cerebral arterial blood flow volume of group T significantly increased at T2 and T3 (P<0.05).There was no significant difference in HR, MAP and PETCO2 between the two groups (P>0.05). At T3, the MAP of Group T was significantly higher than Group R (P<0.05). Compared with T1, the MAP of Group T increased significantly at T2~T4 (P<0.05).Conclusions During laparoscopic surgery, Trendelenburg position can causes the increase ofresistance index of the vertebral artery and internal carotid artery and the cerebral arterial blood flow volume. |