Effect of different mask ventilation modes on hemodynamics and gastric intake in children with tonsil adenoidectomy under general anesthesia
Objective To explore the effect of different mask ventilation modes on hemodynamics and gastric intake in children with tonsil adenoidectomy under general anesthesia.Methods A total of 100 cases who underwent tonsil adenoidectomy under general anesthesia were selected and grouped into group A (33 cases),group B (33 cases) and group C (34 cases) on the principle of randomized numerical table method.Group A was given manual controlled ventilation,group B was given pressure controlled ventilation (PCV) and group C was given pressure-controlled ventilation,volume-guaranteed (PCV-VG).Comparison was made on hemodynamic indexes[mean arterial pressure (MAP),heart rate (HR),oxygen saturation (SpO2)],gastric intake and the incidence of postoperative complications in the three groups at different time intervals[immediate disappearance of spontaneous respiration (T0),60 s of mask ventilation (T1),120 s of mask ventilation (T2),180 s of mask ventilation (T3)].Results Comparison of MAP and HR levels of the three groups at T0-T3,the differences were not statistically significant (P>0.05).At T0,SpO2 levels of the three groups of children were comparable,and the difference was not statistically significant (P>0.05).In group A,SpO2 at T1-T3 were (96.95±1.24)％,(96.63±1.19)％ and (96.57±1.09)％,SpO2 at T1-T3 in group B were (97.27±1.21)％,(97.08±1.17)％,(96.91±1.11)％,SpO2 at T1-T3 in group C were (98.14±1.17)％,(97.86±1.20)％,(97.78±1.15)％,respectively.The difference in SpO2 levels among the three groups at T1-T3 was statistically significant (P<0.05),and SpO2 levels in group C were slightly higher than those in group A and group B.The incidence rates of gastric intake in group A,group B,and group C were 30.30％,9.09％,and 5.88％,respectively.The incidence of gastric intake in group B and group C was lower than that in group A,and the difference was statistically significant (P<0.05),and the difference in the incidence of gastric intake between group B and group C was not statistically significant when compared (P>0.05).The incidence of postoperative related complications was comparable in the three groups,and there was no statistically significant difference in pairwise comparisons of the three groups (P>0.05).Conclusion In tonsillar adenoidectomy under general anesthesia,PCV and PCV-VG ventilation modes are equally effective in maintaining lower peak airway pressure and less gastric intake.However,PCV-VG can better maintain tidal volume and lung compliance in children,and is more ideal for maintaining hemodynamic stability.
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