• Am. J. Obstet. Gynecol. · Oct 1977

    Epidural analgesia and its effects on the "normal" progress of labor.

    • J C Phillips, C J Hochberg, J K Petrakis, and J D Van Winkle.
    • Am. J. Obstet. Gynecol. 1977 Oct 1;129(3):316-23.

    AbstractThe effects of epidural analgesia on the duration of labor have been a controversal subject since its increased use in recent years. A total of 598 patients receiving this form of analgesia were studied as to progress in labor and eventual outcome. The mean cervical changes during epidural analgesia with a single drug, bupivacaine, 0.125%, with epinephrine, 1:200,000, have been calculated. The labor curves are characterized by constant acceleration in dilatation without deceleration at approximately the same rate for nulliparous and multiparous patients after dilatation of 5 cm. has been reached. Examination of maternal and fetal profiles failed to demonstrate any consistent variables that produce abnormal labor.

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