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Published on: April 11, 2025
Computerized cardiotocography in pregnancies complicated by maternal asthma
Danielle S Nemer1, Roseli M Y Nomura, Cristiane Ortigosa
1Department of Obstetrics and Gynecology, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil.
Summary
Asthma in pregnancy did not alter fetal heart rate (FHR) patterns. However, asthmatic mothers had fewer fetal movements per hour, indicating a need for further research on fetal movement monitoring in asthma complicated pregnancies.
Area of Science:
- Obstetrics and Gynecology
- Perinatology
- Maternal-Fetal Medicine
Background:
- Asthma is a common comorbidity in pregnancy.
- The impact of maternal asthma on fetal well-being, particularly fetal heart rate (FHR) parameters, requires thorough investigation.
Purpose of the Study:
- To evaluate FHR parameters using computerized cardiotocography in term pregnancies complicated by asthma.
- To compare FHR metrics and fetal movements between pregnancies with and without asthma.
Main Methods:
- A prospective cross-sectional study compared 21 term pregnancies with asthma (no oral corticosteroids) to 30 healthy controls.
- Computerized cardiotocography (30-min analysis) assessed basal FHR, accelerations, episode durations, and short-term variability (STV).
- Fetal movements were quantified, and statistical analyses included t-tests, Mann-Whitney U, and chi-squared tests.
Main Results:
- No significant differences were observed in basal FHR, number/duration of accelerations, or STV between asthmatic and control groups.
- Maternal asthma was significantly associated with a lower mean number of fetal movements per hour (34.6 vs. 60.6).
Conclusions:
- Computerized cardiotocography did not reveal an association between maternal asthma and abnormal FHR parameters in term pregnancies.
- Maternal asthma is linked to reduced fetal movements, suggesting the importance of fetal movement counting in monitoring pregnancies with asthma.
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