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Adverse Perinatal Events and Subsequent Cesarean Rate

From the MacGregor Medical Association, Department of Obstetrics and Gynecology, Houston, Texas.

Address reprint requests to: Mark A. Turrentine, MD MacGregor Medical Association 6410 Fannin Street, Suite 200 Houston, TX 77030 E-mail: drt318{at}aol.com

Objective: To determine whether severe intrapartum complications resulting in poor neonatal outcome increased obstetricians’ cesarean delivery rates.

Methods: From July 1996 through June 1998 we prospectively studied 3008 deliveries by 12 obstetricians. We chose adverse neonatal outcomes that would be viewed by obstetricians as anxiety-provoking experiences that are rare in obstetric practice. Index events included head entrapment of breech infants, Apgar score less than 3 at 10 minutes, shoulder dystocia resulting in persistent brachial plexus injury, and intrapartum fetal death. After an index event was identified, the obstetrician’s cesarean delivery rate for the 50 deliveries before the index event was compared with the 50 deliveries after the index event. Obstetricians who had no intrapartum complication during the observational period were matched as controls.

Results: Six index events were identified, three cases of shoulder dystocia and three intrapartum fetal deaths. In three of these six cases, the Apgar score at 10 minutes was less than 3. Obstetricians who attended a delivery with severe intrapartum complications had an average increase in their cesarean delivery rate of 37% in the 50 deliveries after the index event (21.0% to 28.7%, P < .05). This rate was greater (P < .05) than that of matched control obstetricians observed during the same observation period (19.0% to 18.7%).

Conclusion: Intrapartum complications such as persistent neonatal brachial plexus injury or fetal death increased the cesarean delivery rate of the obstetrician experiencing these events. Obstetricians should be aware of the effect of these adverse events on their practice of obstetrics.

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