Scott DB and Hibbard BM. Serious non-fatal complications associated with extradural block in obstetric practice. Br J Anaesth 1990;64:537-541. Scott DB and Tunstall ME. Serious complications associated with epidural/spinal blockade in obstetrics: a two-year prospective study. Int J Obstet Anesth 1995;4:133-9. Stavrou C, Hofmeyr GJ, and Boezaart AP. Prolonged fetal bradycardia during epidural analgesia. S Afr Med J 1990;77:66-68. Steiger RM and Nageotte MP. Effect of uterine contractility and maternal hypotension on prolonged decelerations after bupivacaine epidural anesthesia. Am J Obstet Gynecol 1990;163:808-812 Thorp JA. Epidural analgesia during labor. Clin Obstet Gynecol 1999;42(4):785-801. Withington DE and Weeks SK. Repeat epidural analgesia and unilateral block. Can J Anaesth 1994;41(7):568-571.