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Diminished fetal reactivity with smoking

J P Phelan

    American Journal of Obstetrics and Gynecology
    |January 15, 1980
    PubMed
    Summary

    Chronic cigarette smoking in high-risk pregnancies is linked to higher rates of nonreactive fetal activity-acceleration determination (FAD) tests. This suggests potential fetal compromise in smoking mothers compared to non-smokers.

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    Area of Science:

    • Obstetrics and Gynecology
    • Fetal Monitoring
    • Perinatal Health

    Background:

    • The fetal activity-acceleration determination (FAD), also known as the nonstress test, is crucial for assessing fetal well-being in high-risk pregnancies.
    • A reactive FAD typically indicates fetal health, while a nonreactive FAD may suggest fetal compromise.

    Purpose of the Study:

    • To investigate the impact of chronic cigarette smoking on fetal reactivity.
    • To determine if smoking influences FAD test results in high-risk pregnancies.

    Main Methods:

    • A study involving 350 pregnant women with high-risk pregnancies.
    • Comparison of FAD test results between a group of smokers and a non-smoking control group.

    Main Results:

    Keywords:
    BehaviorBiologyBody WeightDemographic FactorsDiseasesFetal DeathHigh Risk WomenMaternal-fetal ExchangeMortalityPhysiologyPopulationPopulation DynamicsPregnancyPregnancy ComplicationsPregnancy TestsReproductionSmoking

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  • The incidence of nonreactive or positive FAD tests was significantly higher in the group of pregnant women who smoked chronically.
  • Statistical analysis showed a significant difference between the smoking and non-smoking groups (chi 2=8.9950; p < 0.005).

    • Conclusions:

    • Chronic cigarette smoking is associated with a higher likelihood of nonreactive FAD tests in high-risk pregnancies.
    • These findings suggest that smoking may negatively affect fetal status and reactivity during pregnancy.