Epidural anesthesia in low-risk obstetrical patients.

The use of epidural anesthesia in obstetrics has increased markedly in the last decade, and some authorities are now stating that epidural block may be the anesthetic method of choice for most women. In spite of this growth in popularity, no studies have been reported that deal with the outcomes of epidural anesthesia in low-risk obstetrical patients, that group of women for whom family physicians are most likely to provide care. A retrospective cohort study of factors associated with epidural anesthesia in a low-risk obstetrical population was performed. Epidural anesthesia was administered by obstetrical anesthesiologists, and patients were monitored by nurses experienced with epidural anesthesia. Although retrospective studies cannot establish cause-and-effect relationships, it was found, when compared with deliveries without epidural anesthesia, that epidural anesthesia deliveries were associated with changes in several parameters of labor and delivery. Although epidural anesthesia was observed to be a very safe procedure, three of the variables (higher use of low forceps, increased use of oxytocin, and greater total costs) may be of some clinical importance and should be considered by both the delivering physician and the patients when choosing obstetrical anesthesia.