摘要
目的 调查二苯甲烷二异氰酸酯 (methylenediphenyldiisocyanate,MDI)对作业工人呼吸功能的影响。方法 以某汽配制造公司54名 MDI作业工人为观察组,同公司30名非 MDI作业人员为对照组。分别检查肺功能 (PFT)、脉冲震荡肺功能 (IOS)和呼气峰流量 (PEF),并计算 PEF 日内变异率。结果 观察组与对照组 FVC%pred、FEV1%pred、FEV1/FVC、最大呼气中段流速占预计值百分 比 (MEF25-75%pred)差 异 均 无 统 计 学 意 义 (P >0.05) [分 别 为 (95.40±9.99)%, (97.74±9.87)%;(94.54±9.24)%, (97.18±9.32)%; (98.81±7.07)%, (99.19±3.97)%; (83.64±17.92)%,(89.48±17.46)%]。周围气道阻力 (R5-R20)、周边弹性阻力 (X5)、低频电抗面积 (AX)、 共 振 频 率 (Fres)2 组 差 异 均 无 统 计 学 意 义 (P >0.05) [分 别 为 (18.67± 17.25)cmH2O·L-1 ·s-1, (15.95±10.90)cmH2O·L-1 ·s-1; (1.13±0.84)cmH2O·L-1 ·s-1, (1.04±0.65)cmH2O·L-1·s-1; (7.73±13.07)cmH2O/L, (3.76±4.07)cmH2O/L); (15.33± 6.91)L/s,(11.75±4.30)L/s]。但是 PEF%pred、最大自主通气量占预计值比值 (MVV%pred)显著降低 (P <0.05),而残气量占预计值比值 (RV%pred)、残总百分比 (RV/TLC%)、呼吸总阻抗占预计值比值 (Z5%pred)、总 气 道 阻 力 占 预 计 值 比 值 (R5%pred)、中 央 气 道 阻 力 占 预 计 值 比 值 (R20%pred)均显著增加 (P <0.05) [分别是 (86.37±16.22)%, (96.04±17.54)%; (88.91± 24.94)%,(121.30±41.71)%; (112.28±22.86)%, (97.95±9.90)%; (111.25±15.67)%, (100.93±12.45)%; (124.73±47.46)%, (96.47±19.73)%; (118.48±44.26)%, (89.08± 16.44)%;(112.27±35.66)%,(88.02±14.87)%]。PEF日内变异率显示工作日第1天接触组明显增加 (P <0.05)[分别为 (14.50±6.45)%, (9.56±3.77)%],第2、第3天差异无统计学意义 (P >0.05)[分别为 (11.56±4.37
Objective To investigate respiratory function in workers exposed to methylenediphenyl diisocyanate (MDI). Methods Fifty-four workers exposed to MDI were enrolled into exposure group and 30 unexposed staff were included into control group. Impulse osilhnetory system testing (lOS), pulmonary function testing (PFT), and peak expiratory flow (PEF) were performed accordingly in two groups. Results There were no significant differences between exposure group and control group in FVC%pred, FEV1% pred, FEV1/FVC, MEF25-75 % pred [(95.40 ± 9.99) %, ( 97.74 ± 9.87) ] ; ( 94.54 ± 9.24) %, (97.18±9.32) %;(98.81±7.07)%,(99.19±3.97)%;(83.64±17.92)%,(89.48±17.46)% and also in R5-R20,XS,AX,Fres [(18.67±17.25) cmH2O.L-1 .s-1 , (15.95± 10.90) emH2O.L-1.s-1 ;(1.13 ±0.84) cmH2O.L-1.s-1,(1.04±0.65) cmH2O.L-1.s-1);(7.73±13.07) cmH2O/L, (3.76±4.07) cmH2 O/L; (15.33±6.91) L/s, ( 11.75 ±4.30) L/s] . But PEF% pred, MVV % pred were significantly lower in exposure group than those in control group while RV% pred, RV/TLC and Z5 % pred, R5 % pred, R20%pred were significantly higher [-(86.37±16.22) %, (96.04±17.54) %;(88.91±24.94) %, (121.30±41.71)%;(112.28±22.86)%,(97.95±9.90) %;(111.25±15.67) %,(100.93±12.45) %;(124.73±47.46) %,(96.47±19.73)%;(118.48±44.26)%,(89.08±16.44) %;(112.27± 35.66)%, (88.02± 14.87)%]. Diurnal PEF variability was significantly higher in the first day in exposure group, but was not much higher in the second and third day [-(14.50±6.45) %, (9.56±3.77) %;(11.56±4.37) %,(9.14±5.20)%;(10.34±7.28) %,(5.73±2.14) %].Conclusions Exposure to MDI in low concentration may cause obstructive ventilation dysfunction and increase central airway resistance and also diurnal PEF variability. Then airway responsiveness can be influenced.
作者
郭孔荣
杨文兰
郭健
孙道远
刘锦铭
Guo Kongrong Yang Wenlan Guo Jian Sun Daoyuan Liu Jinming(Department of Occupational Poisoning, Shanghai Pulmonary Hospital Affiliated Tongji University, Shanghai 200433, Chin)
出处
《国际呼吸杂志》
2017年第12期942-947,共6页
International Journal of Respiration
关键词
二苯甲烷二异氰酸酯
肺功能
呼气峰流量日内变异率
气道反应性
Methylenediphenyl diisocyanate
Pulmonary function
Diurnal peak expiratory flow variability
Airway responsiveness