Application of ultrasound -guided bilateral superficial cervical plexus block combined with general anesthesia in patients undergoing thyroidectomy / 中国基层医药

ABSTRACT

Objective To compare the efficacy of ultrasound -guided bilateral superficial cervical plexus block combined with general anesthesia and single general anesthesia in patients undergoing thyroidectomy.Methods 60 patients with ASAI ~II undergoing thyroidectomy,in accordance with the random number table,were divided into bilateral superficial cervical plexus block combined with general anesthesia group (group A)and single general anesthesia group(group B),30 cases in each group.In group A,the patients were provided ultrasound -guided bilateral superficial cervical plexus block with 0.4% ropivacaine 40 ml(20 mL for each side)before general anesthesia induction.In group B,the patients were directly induced for general anesthesia.The patients of the two groups had the same general anesthesia induction drugs.SBP,DBP and HR were monitored and recorded at the time of pre -anesthesia,skin incision, postoperation and extubation.The cumulative amount of propofol and remifentanil during the operation were recorded. The extubation time was recorded and each patient was assessed 1,2,3,4h after surgery for resting VAS score. Results Blood pressure and heart rate at the different time points during operation were higher than pre -anesthesia significantly in group B[skin incision SBP (134.8 ±8.5)mmHg,the end of operation SBP (123.4 ±5.1)mmHg, tracheal extubation SBP (138.7 ±8.5)mmHg vs preanesthesia SBP (117.3 ±9.8)mmHg,t =7.39,3.02,9.04,all P =0.00;skin incision DBP (86.7 ±7.6)mmHg,the end of operation DBP (80.6 ±7.8)mmHg,tracheal extubation DBP (87.4 ±5.8)mmHg vs preanesthesia DBP (75.6 ±6.6)mmHg,t =6.04,2.68,7.35,all P =0.00;skin incision HR (92.4 ±6.5)times/min,the end of operation HR (86.8 ±6.3)times/min,tracheal extubation HR (96.9 ± 7.2)times/min vs preanesthesia HR (78.9 ±6.8)times/min,t =7.86,4.67,9.96,all P =0.00].The cumulative amount of general anesthesia during operation in group A was less than that in group B,the extubation time in group A was shorter than that in group B[propofol doses of group A (650.6 ±50.3)mg vs group B (762.3 ±43.5)mg,t =9.2,P =0.00;remifentanil doses of group A (0.61 ±0.08)mg vs group B (0.95 ±0.06)mg,t =18.62,P =0.00;extubation time of group A (10.6 ±5.1)min vs group B (15.5 ±5.2)min,t =3.68,P =0.00].The resting VAS score at the different time points after surgery in group A was less than that in group B[the resting VAS score at 1,2, 3,4h after surgery in group A vs group B,(0.99 ±0.81)vs (1.75 ±1.23),t =2.83,P =0.00;(1.23 ±1.02)vs (3.45 ±0.84),t =9.2,P =0.00;(2.80 ±0.85)vs (3.71 ±1.19),t =3.41,P =0.00;(3.11 ±1.02)vs (5.19 ± 1.36),t =6.7,P =0.00],there were statistically significant differences.Conclusion Ultrasound -guided bilateral superficial cervical plexus block combined with general anesthesia used in patients undergoing thyroidectomy can maintain the intraoperative hemodynamic stability effectively,reduce the amount of general anesthetics,shorten the extubation time,and ease the early postoperative pain,the efficacy is significantly better than single general anesthesia.