Evaluation of the effect of paravertebral paralysis combined with dexmedetomidine on thoracotomy in patients undergoing ultrasound and its effect on perioperative stress
Objective To analyze the effect of paravertebral block combined with dexmedetomidine on thoracotomy in thoracic surgery and its effect on perioperative stress. Methods From January 2016 to December 2016, 120 patients underwent thoracotomy in Huzhou First People's hospital were randomly divided into observation group and control group (60 cases). The observation group was given dexmedetomidine + ultrasound paravertebral nerve block, the control group given ropivacaine + ultrasound paravertebral nerve block. To observe the effect of the two groups of patients and the effect of perioperative stress. Results The levels of propofol, remifentanil and PCIA were significantly lower in the observation group than those in the control group (P<0.05). The levels of SBP, DBP and HR in T2-T3 were significantly lower than those in T1 (P<0.05). Compared with the control group, the VAS score of the observation group was lower than that of the control group, the difference was statistically significant (P<0.05). The addition of morphine and the addition of midazolam in the observation group were higher than those in the control group, the difference was statistically significant (P<0.05). Conclusion Ultrasound with paravertebral block combined with dexmedetomidine in thoracotomy has a good block and analgesic effect, can inhibit stress response and reduce intraoperative anesthesia.