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Related Experiment Videos

Smoking during labour.

L G Latulippe1, S Marcoux, J Fabia

  • 1Department of social and preventive medicine, Laval University, Sainte-Foy, Québec, Canada.

Canadian Journal of Public Health = Revue Canadienne De Sante Publique
|May 1, 1992
PubMed
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Smoking during labor significantly elevates carboxyhaemoglobin (COHb) levels in both mothers and newborns. This study highlights the adverse effects of smoking during childbirth, recommending a complete ban in hospitals.

Area of Science:

  • Obstetrics and Gynecology
  • Public Health
  • Toxicology

Background:

  • Hospital smoking bans are increasingly common, yet some permit smoking in designated areas.
  • The impact of smoking during labor on maternal and infant carboxyhaemoglobin (COHb) levels requires further investigation.

Purpose of the Study:

  • To assess the association between smoking during labor and carboxyhaemoglobin concentrations in maternal and cord blood.
  • To determine the influence of smoking during pregnancy and labor on infant COHb levels.

Main Methods:

  • A study involving 295 mother-infant pairs where maternal smoking behavior during pregnancy and labor was recorded post-delivery.
  • Carboxyhaemoglobin levels were measured in maternal and cord blood.
  • Statistical analysis considered smoking habits, duration of labor, and parity.

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Main Results:

  • Mothers smoking during labor had significantly higher carboxyhaemoglobin levels.
  • Smoking during labor explained 10.8% of the variance in cord blood carboxyhaemoglobin.
  • Maternal smoking during pregnancy also contributed to elevated carboxyhaemoglobin in newborns.

Conclusions:

  • Smoking during labor demonstrably increases carboxyhaemoglobin levels in both mothers and infants.
  • The findings support a prohibition of smoking in hospitals, particularly during labor, to protect maternal and infant health.