Effect of BIS on hemodynamics during laparoscopic cholecystectomy under laryngeal mask airway anesthesia

Objective To explore the effect of bispectral index (BIS) monitoring on hemodynamics patients undergoing laparoscopic cholecystectomy under laryngeal mask anesthesia. Methods 110 patients with laparoscopic cholecystectomy were randomly divided into the control group and the observation group according to digital table method.The control group was administered according to the experience of anesthesiologists, the observation group was administered according to BIS monitoring.The hemodynamic indexes, the dosage of anesthetic drug and recovery time of two groups were analyzed. Results After pulling out the laryngeal mask, the HR (74.13±6.99)beats/min, MAP (78.54±8.01)mmHg and COR (321.23±15.35)nmol/L of the observation group were significantly higher than HR (94.21±9.53)beats/min, MAP(98.67±10.21)mmHg and COR (463.24±20.01)nmol/L of the control group, the differences were statistically significant (t=12.60, 11.50, 41.76, all P<0.05). The amount of propofol induction (1.65±0.21)mg/kg, dosage of propofol (323.13±15.64)mg and remifentanil (401.21±20.11)μg of the observation group were lower than those of the control group [(2.39±0.34)mg/kg, (414.32±20.34)mg, (469.54±22.39)μg], and the recovery time of the observation group (6.89±1.01)min was significantly better than (10.21±1.42)min of the control group, the differences were statistically significant (t=13.73, 26.36, 16.84, 14.13, all P<0.05). Conclusion The effect of BIS monitoring in laryngeal mask anesthesia for laparoscopic cholecystectomy is significant, which can reduce intraoperative anesthetic dosage, promote hemodynamic stability, reduce the stress response of patients, shorten recovery time, the anesthesia is more safe and reliable. Key words: Electroencephalography; Anesthesia; Cholecystectomy laparoscopic; Hemodynamics