Puranik B M, Kaore S B, Kurhade G A, Agrawal S D, Patwardhan S A, Kher J R
Department of Physiology, Government Medical College, Nagpur.
Indian J Physiol Pharmacol. 1994 Apr;38(2):129-32.
The study deals with evaluation of pulmonary function status in fifty normal pregnant women tested monthly. The parameters studied were Vital Capacity (VC) Forced Vital Capacity (FVC) and Forced Expiratory Volume in 1st second (FEV1) using Vitalograph Spirometer; tidal volume (VT), inspiratory capacity (IC) and expiratory reserve volume (ERV) using Expirograph and resting minute ventilation (VE) using Tissot's spirometer. Control values were obtained in the same subject 8-10 weeks after delivery. The increase seen in VT, VE and IC was very highly significant. The small increment in frequency of respiration is significant and the declining trend observed in ERV is very highly significant. VC and FVC were maintained by the rise in IC and a concomitant fall in ERV. Rise in VC is attributed mainly to rise in VT than rise in frequency. The results suggest that though pulmonary function is altered during pregnancy, it is not compromised and hence does not induce any mechanical stress on the respiratory efficiency of the pregnant woman.
该研究对五十名正常孕妇进行了每月一次的肺功能状态评估。使用肺活量计研究的参数有肺活量（VC）、用力肺活量（FVC）和第1秒用力呼气量（FEV1）；使用呼气描记器研究潮气量（VT）、吸气量（IC）和呼气储备量（ERV），使用蒂索肺活量计研究静息分钟通气量（VE）。在分娩后8 - 10周的同一受试者身上获取对照值。观察到VT、VE和IC的增加非常显著。呼吸频率的小幅增加具有显著性，而ERV的下降趋势非常显著。VC和FVC通过IC的升高以及ERV的相应下降得以维持。VC的升高主要归因于VT的增加而非频率的增加。结果表明，尽管孕期肺功能发生改变，但并未受到损害，因此不会对孕妇的呼吸效率产生任何机械性压力。
