The characteristics of respiratory parameters in patients with different body mass index during general anesthesia with tracheal intubation
10.3969/j.issn.1006-5725.2018.09.023
- VernacularTitle:不同体质指数患者插管全麻期间呼吸参数的特点
- Author:
Qingchun LIANG
1
;
Yimei YANG
;
Qin ZHOU
;
Jinhe LI
;
Sanqing JIN
Author Information
1. 南方医科大学第三附属医院麻醉科 广州 510630
- Keywords:
body mass index;
respiratory parameters;
general anesthesia;
tidal volume
- From:
The Journal of Practical Medicine
2018;34(9):1500-1503
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the characteristics of respiratory parameters in patients with different body mass index during general anesthesia with tracheal intubation. Methods 102 patients scheduled for otitis me-dia surgery were divided into low weight group(B1,n=32),normal weight group(B2,n=36)and overweight or obese group(B3,n = 34 ). After general anesthesia with tracheal intubation,the tidal volume of anesthetic ma-chine wasadjusted to maintain the end tidal carbon dioxide partial pressure between 35 - 45 mmHg. At 10 min (T1),30min(T2)and 60 min(T3)after adjustment,arterial PH,arterial partial pressure of oxygen(PaO2),arte-rial carbon dioxide pressure(PaCO2),inspiratory tidal volume(VTi),expiratory tidal volume(VTe),end tidal carbon dioxide partial pressure(PETCO2),peak airway pressure(Ppeak),plateau airway pressure(Pplat)and dy-namic lung compliance(Cdyn)were recorded. Results PH and PaO2 were not significantly different at T1-3 among the three groups(P>0.05). As compared with group B1 and B2,PaCO2 was lower in group B3. In comparison with group B2,VTi,VTe and Cdyn were higher in group B1 and lower in group B3(P < 0.05). Ppeak and Pplat were lower in group B1 but higher in group B3(P<0.05). PETCO2 was higher in group B1(P>0.05)while lower in group B3 (P < 0.05). Conclusions With the increase in BMI during general anesthesia with tracheal intubation ,the VTi,VTe,Cdyn,PETCO2 and PaCO2 decrease significantly,but Ppeak and Pplat elevate markedly. BMI is a refer-ence index for setting respiratory parameters.
