Acute effects of maternal smoking on fetal hemodynamics

Objective: To investigate acute effects of cigarette smoking on fetal hemodynamics. Method: Sixty seven women between 32nd to 40th weeks of gestation were evaluated. Maternal blood pressure and heart rate, fetal heart rate (FHR) tracing, umbilical and fetal middle cerebral arterial (MCA) color Doppl...

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Bibliographic Details
Published in:International journal of gynecology and obstetrics 2004-10, Vol.87 (1), p.14-18
Main Authors: Ates, U., Ata, B., Armagan, F., Has, R., Sidal, B.
Format: Article
Language:English
Subjects:
Acute effects
Adult
Biological and medical sciences
Blood Pressure - drug effects
Female
Fetal hemodynamics
Fetus - drug effects
Fetus - physiology
Gynecology. Andrology. Obstetrics
Heart Rate, Fetal - drug effects
Hemodynamics - drug effects
Humans
Maternal Exposure
Medical sciences
Nonstress test
Placental Circulation - drug effects
Pregnancy
Smoking
Smoking - adverse effects
Time Factors
Tobacco, tobacco smoking
Toxicology
Ultrasonography, Doppler
Ultrasonography, Prenatal
Umbilical Arteries - drug effects
Umbilical Arteries - physiology
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Summary:Objective: To investigate acute effects of cigarette smoking on fetal hemodynamics. Method: Sixty seven women between 32nd to 40th weeks of gestation were evaluated. Maternal blood pressure and heart rate, fetal heart rate (FHR) tracing, umbilical and fetal middle cerebral arterial (MCA) color Doppler measurements were evaluated. Pre- and postsmoking results were compared with paired t-test. Results: Maternal heart rate significantly increased after smoking. Baseline FHR and FHR variability remained unchanged. The number of participants who had a reactive NST was 60 in 67 before smoking (89.5%) and decreased to 47 after smoking (70.1%) ( p=0.009). There were no significant changes between maximum and minimum flow velocities, pulsatility index (PI), resistance index (RI) and systolic/diastolic flow ratio (S/D) of umbilical and middle cerebral arteries. Conclusion: The nicotine load of a single cigarette may be inadequate to cause a detectable decrease in utero-placental blood flow; however, smoking prior to the FHR recording may alter the FHR reactivity.
ISSN:0020-7292
1879-3479
DOI:10.1016/j.ijgo.2004.06.009