Effect of pressure controlled ventilation-volume guaranteed mode on respiratory mechanics and gas exchange function in pediatric patients undergoing laparoscopic herniorrhaphy
- VernacularTitle:压力控制容量保证通气模式对腹腔镜疝修补术患儿呼吸力学及气体交换功能的影响
- Author:
Jinxiong XU
1
;
Qianlin YE
;
Haoxiang HU
Author Information
- Keywords: pressure controlled ventilation-volume guaranteed; laparoscopic herniorrhaphy; child; respiratory mechanics; gas exchange index
- From: China Journal of Endoscopy 2024;30(11):24-30
- CountryChina
- Language:Chinese
- Abstract: Objective To investigate the effects of pressure controlled ventilation-volume guaranteed(PCV-VG)mode on respiratory mechanics and gas exchange index in pediatric patients underwent laparoscopic herniorrhaphy.Methods 90 patients,scheduled for elective laparoscopic herniorrhaphy under general anesthesia of tracheal intubation,were randomly divided into 3 groups(n=30 each)using a random number table method:PCV-VG group,pressure controlled ventilation(PCV)group and volume controlled ventilation(VCV)group.At 5 min before pneumoperitoneum(T1),10 min after pneumoperitoneum(T2)and 5 min after release of pneumoperitoneum pressure(T3),respiratory mechanical indexes[inspiratory tidal volume(VTinsp),peak airway pressure(Ppeak),mean airway pressure(Pmean),dynamic lung compliance(Cldyn)]were recorded and gas exchange index[alveolar-artery oxygen partial pressure gradient(PA-aO2),respiratory index(RI)and oxygenation index(OI)]were recorded in three groups.The occurrence of pulmonary complications were recorded within 7 d after operation in three groups.Results Compared with the VCV group,Ppeak was significantly decreased and Cldyn was significantly increased at T2 and T3 time points in PCV-VG group and PCV group,the differences were statistically significant(P<0.05);Compared with PCV group,Ppeak was decreased at T2 and T3 time points in PCV-VG group,the difference was statistically significant(P<0.05).Compared with T1 time points,Ppeak and Pmean were increased and Cldyn was decreased at T2 and T3 time points in VCV group,Ppeak and Pmean were increased and Cldyn was decreased at T2 in PCV-VG group and PCV group,the differences were statistically significant(P<0.05).There were no significant differences in PA-aO2,RI and OI among three groups at T1,T2 and T3 time points(P>0.05).Compared with T1 time point,PA-aO2 and RI were increased and OI was decreased at T2 and T3 time points in three groups,the differences were statistically significant(P<0.05).There was no significant difference in the incidence of postoperative complications among the three groups(P>0.05).Conclusion PCV-VG mode can effectively reduce Ppeak and improve lung compliance,which is suitable for laparoscopic herniorrhaphy in pediatric patients.
