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OBSTETRIC ANESTHESIA

Spinal Versus Epidural Anesthesia for Cesarean Delivery in Severe Preeclampsia: A Prospective Randomized, Multicenter Study

Shusee Visalyaputra, MD^*, Oraluxna Rodanant, MD, Wanna Somboonviboon, MD, Kamthorn Tantivitayatan, MD, Somboon Thienthong, MD, and Wanawimol Saengchote, MD^||

*Department of Anesthesiology, Siriraj Hospital, Faculty of Medicine, Mahidol University; Department of Anesthesiology, Chulalongkorn University Hospital, Faculty of Medicine; Department of Anesthesiology, Rajvithi Hospital, Tertiary Care Center, Bangkok, Thailand; Department of Anesthesiology, Faculty of Medicine, Khonkaen University, Khonkaen, Thailand; ||Department of Anesthesiology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand

Address correspondence and reprint requests to Shusee Visalyaputra, MD, Department of Anesthesiology, Siriraj Hospital, Bangkoknoi, Bangkok, 10700, Thailand. Address e-mail to sisps{at}mahidol.ac.th.

In this randomized, multicenter study we compared the hemodynamic effects of spinal and epidural anesthesia for cesarean delivery in severely preeclamptic patients. The epidural group (n = 47) received 2% lidocaine with epinephrine 1:400,000, 18–23 mL, followed by 3 mg of morphine after delivery. The spinal group (n = 53) received 2.2 mL of 0.5% hyperbaric bupivacaine plus 0.2 mg morphine. We hypothesized that the lowest MAP (mean arterial blood pressure, the primary outcome) during the delivery period would have to be at least 10 mm Hg less in the spinal group to be of clinical importance. We found that there was a statistically significant difference in MAP, with more patients in the spinal group exhibiting hypotension (P < 0.001). Although the incidence of hypotension (systolic arterial blood pressure, SAP 100 mm Hg) was more frequent in the spinal group than in the epidural group (51% versus 23%), the duration of significant hypotension (SAP 100 mm Hg) was short (1 min) in both groups. There was more use of ephedrine in the spinal group than in the epidural group (median, 6 versus 0 mg) but hypotension was easily treated in all patients. Neonatal outcomes assessed by Apgar scores and the umbilical arterial blood gas analysis were similar in both groups. Adverse neonatal outcomes (5-min Apgar score <7 and umbilical arterial blood pH <7.20) were found in only 2 premature newborns (weight <1500 g) who were born without maternal hypotension after regional anesthesia. We conclude that the results of this large prospective study support the use of spinal anesthesia for cesarean delivery in severely preeclamptic patients.

This article has been cited by other articles:

				M. R. Slack Is Ephedrine the Best Vasopressor for Treating Spinal Anesthesia-Induced Hypotension in Patients with Pre-Eclampsia? Anesth. Analg., December 1, 2006; 103(6): 1584 - 1584. [Full Text] [PDF]

				S. Visalyaputra Is Ephedrine the Best Vasopressor for Treating Spinal Anesthesia-Induced Hypotension in Patients with Pre-Eclampsia? Anesth. Analg., December 1, 2006; 103(6): 1584 - 1585. [Full Text] [PDF]

				S. Sen, G. Ozmert, H. Turan, E. Caliskan, A. Onbasili, and D. Kaya The Effects of Spinal Anesthesia on QT Interval in Preeclamptic Patients Anesth. Analg., November 1, 2006; 103(5): 1250 - 1255. [Abstract] [Full Text] [PDF]

				A. C. Santos and D. J. Birnbach Spinal Anesthesia for Cesarean Delivery in Severely Preeclamptic Women: Don't Throw Out the Baby with the Bathwater! Anesth. Analg., September 1, 2005; 101(3): 859 - 861. [Full Text] [PDF]

Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999