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Related Experiment Video

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Maternal Obesity and Neck Circumference.

B Anglim, A O'Higgins, N Daly

    Irish Medical Journal
    |July 18, 2015
    PubMed
    Summary
    This summary is machine-generated.

    Obese pregnant women often need anesthesia, and larger neck circumferences (NC) can complicate intubation. Measuring NC during pregnancy may help identify women needing specialized anesthetic care.

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    Area of Science:

    • Obstetrics and Gynecology
    • Anesthesiology
    • Maternal Health

    Background:

    • Obesity in pregnant women increases the likelihood of requiring general anesthesia for obstetric procedures.
    • Pregnancy is associated with a higher incidence of difficult tracheal intubation and oxygen desaturation.
    • Increased neck circumference (NC) is a known risk factor for failed tracheal intubation.

    Purpose of the Study:

    • To investigate the relationship between maternal obesity and neck circumference (NC) throughout pregnancy.
    • To assess the utility of antenatal NC measurement for identifying obese women at risk for airway difficulties during anesthesia.

    Main Methods:

    • A cohort of 96 pregnant women attending a standard antenatal clinic was recruited.
    • Maternal Body Mass Index (BMI) and neck circumference (NC) were measured at 18-22 weeks gestation and again at 36-40 weeks.
    • Statistical analysis compared NC between obese and normal BMI groups and assessed changes over gestation.

    Main Results:

    • 13.5% of recruited women were classified as obese.
    • Obese women had significantly larger mean NC (36.8 cm) compared to normal BMI women (31.5 cm) at 18-22 weeks gestation (p < 0.001).
    • NC increased similarly in both obese (1.5 cm) and normal BMI (1.6 cm) women between trimesters.

    Conclusions:

    • Maternal obesity is associated with a larger neck circumference during pregnancy.
    • Antenatal measurement of neck circumference is a simple, cost-effective method for screening obese pregnant women.
    • This screening may help identify individuals who could benefit from a pre-anesthetic assessment to mitigate airway risks.