AbstractAsthma is the most common respiratory complication of pregnancy and affects approximately four per cent of all pregnant women. The purpose of this study was to establish normative data regarding how peak flow values change during gestation in pregnant women with asthma. Eighteen pregnant women with asthma were recruited and completed dally logs throughout their pregnancies. The findings suggest there is a difference in peak flow values in different trimesters. Specifically peak flow values were highest in the second trimester with significant differences between the second and third trimesters. While the sample size is small it does provide longitudinal data that suggest changes in asthma as the pregnancy progresses. This study represents a logical next step in identifying the impact of pregnancy on asthma.
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