| Objective: Explore abdominal ultrasound monitoring under general anesthesia induction period before and after gastric volume changes of different ventilation way,for the full implementation of the induction of general anesthesia in patients with stomach when choose what kind of ventilation way to provide a certain clinical basis.Methods:Choose in June 2015 to November 2015 cases of ASA sizing: I ~ II grade,age: 20-60 years old,weight of 40 kg to 65 kg,height: 151 ~ 176 cm,Mallampati class is Ⅰ~ Ⅱ,limbs orthopedics surgery of patients with infertility,divided into seven groups,each group of 10 cases,male,the female unlimited,respectively is: A1,A2,A3,A4,B1,B2 and B3 group.In the group A group,there were 40 cases of emergency surgery: the fasting period was greater than 4h,less than 8h,and randomly divided into A1,A2,A3 and A4.In the A1 group,general anesthesia was induced by general anesthesia;In A2,the induction period of general anesthesia was adopted by high frequency and low water vapor.The total anaesthesia induced period in the A3 group was treated with precharged oxygen and no positive pressure ventilation.All of the patients in the A4 group had the stomach,the decompression tube and the negative pressure drainage bottle before the induction,and the other measures were identical to those of the A1 group.In group B,there were 30 patients who had a choice of surgical procedure,and the fasting period was greater than 8h,and they were randomly divided into: B1,B2,and B3.The total anaesthesia induced ventilation in B1,B2,and B3 was identical with A1,A2,and A3.All the patients before the general anesthetic were performed by the same doctor on the abdominal ultrasound and searched for the gastric sinus and measured the area.After the endotracheal tube intubation,the doctor performed the abdominal ultrasound again to look for the gastric sinus and measure the area.During the course of the study,patients who were not able to obtain a good cut and tube intubation were excluded from the whole process.The volume of the stomach was converted from the gastric area by using the relevant formula.The pre-induced gastric volume was marked as V1 and the volume of gastric volume marked by the induction of body anesthesia was V2.Results:In the case of 70 patients who were included in the study,the endotracheal intubation was a success,and each patient was given a good stomach and sinus,and no patient had an anti-current or false aspiration.The comparison of the volume of the stomach volume in the various groups was the comparison of A1,A2,A4,B1,B2,and V1,and the difference was statistically significant(P < 0.05).A3,B3 group V2 and V1,the difference is not statistically significant(P > 0.05);There was no statistical significance(P > 0.05)when the patient base SPO2 in each group was successfully compared to the tracheal intubation successfully.The comparison between the groups of V1 was not statistically significant;The comparison between the various groups of V2: A1,A2,A4,B1,B2,and A3 and B3 were statistically significant(P < 0.05),and the other two were statistically significant.The comparison between the two sets of V2 and V1 showed that the difference between A1,A2,A4,B1,B2 and A3 and B3 was statistically significant(P < 0.05),and the other two differences were not statistically significant.There was no statistical significance(P > 0.05)when the base SPO2 of the patients in each group and the success of the endotracheal tube were successful.Conclusion:During the induction period of general anesthesia,the method of prefilling oxygen without positive pressure,the effect on the volume change of the stomach was minimal,and the risk of the patient taking the reverse flow was the lowest. |
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