Application value of pressure control mask ventilation combined with external compression in laparoscopic cholecystectomy during induction period

ObjectiveTo investigate the application value of pressure control mask ventilation combined with external compression in preventing gastric flatulence in laparoscopic cholecystectomy during induction of general anesthesia.

MethodsSixty patients scheduled by laparoscopic cholecystectomy were randomly divided into the observation group and control group(30 cases in each group).Immediately after anesthesia induction and injection of muscle relaxants, the observation group was treated with 15 cmH₂O pressure control mask ventilation combined with external compression of the stomach, and the control group was treated with 15 cmH₂O pressure control mask ventilation.The oxygen saturation(SpO₂) in two groups were recorded before anesthesia induction(T₀), at 1 min (T₁) and 2 min (T₂) after mask control ventilation and immediately after endotracheal tube insertion(T₃).The anterior-posterior and left-right axial diameters of gastric sinus were measured using ultrasound T₀ and T₃, and the cross-sectional area (CSA) of the gastric sinus was calculated.The endoscopic classification of gastric morphology was recorded at the beginning of the operation.The nausea and vomiting within 24 h after the operation were followed up.

ResultsThere was no statistical significance in the age, body mass index(BMI), operation time and anesthesia time between two groups(P>0.05).There was no statistical significance in the CSA of the gastric sinus at T₀ between two groups(P>0.05).The differences of the CSA in two groups were statistically significant between at T₃ and T₀(P < 0.01), and the difference value of CSA in the control group was higher than that in observation group.The difference of the incidence rates of nausea and vomiting after 24 h of operation were statistically significant between two groups(P < 0.05).

ConclusionsIn the induction period of general anesthesia, the use of pressure control mask ventilation combined with external compression of the stomach can improve the gastric flatulence of patients treated with laparoscopic cholecystectomy, and it is worthy of clinical application.