Association between Elevated Intrauterine Resting Tone during Labor and Neonatal Morbidity.
OBJECTIVE: Internal contraction monitoring provides a quantitative assessment of intrauterine resting tone. During the course of labor, elevated intrauterine resting tone may be identified. We hypothesized that elevated intrauterine resting tone could lead to compression of the spiral arteries, thus limiting uterine blood flow and resulting in neonatal compromise. Therefore, our objective was to assess the association between elevated resting tone during labor and neonatal morbidity. STUDY DESIGN: This was a secondary analysis of a prospective cohort study of singleton deliveries at ≥37 weeks
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