Title: Study of Pulmonary Function Tests During Pregnancy At Physiological Variable Conditions
Authors: Dr Sulata Mohapatra, Dr Umakant Satapathy, Dr Niharika Panda
DOI: https://dx.doi.org/10.18535/jmscr/v5i5.93
Abstract
Pregnancy is one of the most critical states of physiological adaptation during which many physiological adjustments occur to meet the requirement of foetus as well as mother. Such studies are the key to understand and help in prevention of abnormal foetal growth. The study was conducted in 120 normal pregnant cases which were divided in to three groups having 40 cases in each group and were compared with that of control group of another 40 non pregnant women. The different static and dynamic lung volumes and capacities like tidal volume (TV), forced vital capacity (FVC), forced expiratory volume in one second (FEV1), percentage FEV1/ FVC, peak expiratory flow rate (PEFR),mid expiratory flow rate (MEFR), maximum mid expiratory flow rate(MMEFR) and maximum voluntary ventilation (MVV) were determined by the instrument medspiror. The observed values were compared to those of different groups. It is observed and also concluded that there is definite increase in respiratory rate and tidal volume during pregnancy. There is no significant change in FVC and FEV1 percentage FEV1/FVC during pregnancy even though there is a slight reduction of FVC in some cases. The MMEFR get reduced during 1st trimester but goes on rising in subsequent course of pregnancy. The MEFR, PEFR and MVV show a decrease value in pregnancy as compared to normal. The age, height, weight, parity and body surface area showed no significant relation with pulmonary function tests. The changes are mostly due to the anatomical, biochemical, hormonal as well as psychological changes during pregnancy.
Key Words: pulmonary function test, lung volume & capacities, pregnancy.
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