The Shape of the Amniotic Pressure Curve Before and After Paracervical Block During Labour

In twelve women, in whom labor was induced by oxytocin infusion, intra-uterine pressure (IUP) was recorded by micro-transducers, and simultaneously the diameter of the uterine cavity was estimated by means of ultrasound. Myometrial tension was calculated according to the law of Laplace. In the ten women who were delivered within eight hours after the start of induction, myometrial tension was clearly higher than in the two in whom induction failed. No technical problems were encountered during the registrations, which in some cases lasted for more than five hours. It is suggested that with the described technique, a more accurate determination of myometrial activity is possible than with the generally used methods for IUP recording. The technique might facilitate evaluation of drug effects on the uterus during labor, and improve the IUP-part of intrapartum clinical monitors.

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The Shape of the Amniotic Pressure Curve Before and After Paracervical Block During Labour

Cited by 4 publications

References 24 publications

Local anaesthetic nerve block for pain management in labour

Local anaesthetic nerve block for pain management in labour

The effects of epidural analgesia on uterine activity and labor

Determination of Myometrial Tension During Labor by Combined Microtransduceru Iup‐recording and Ultrasonic Examination of the Uterine Cavity

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