Article Text

Download PDFPDF
The Effect of Maternal Lateral Position or Position Change on Epidural Anesthesia and Plasma Bupivacaine Concentrations
  1. Mikko T. Pitkanen, MD,
  2. Heikki Paatero, MD and
  3. Per H. Rosenberg, MD
  1. From the Department of Anesthesia, I and II Departments of Gynecology and Obstetrics, and Department of Anesthesiology, Helsinki University Central Hospital, Helsinki, Finland


Forty patients scheduled for elective cesarean section were studied. Epidural administration of 0.5% bupivacaine, 95-135 mg, was performed with the patients in right lateral decubitus position. In randomized order, half of the patients remained on the same side for 30 minutes. The other half were turned to the left lateral decubitus position for 30 minutes immediately after the epidural injection. Then all patients were turned to the left lateral “tilt” position for surgery. The spread of analgesia was tested by pinprick, and plasma bupivacaine concentrations were measured from mother and infant. The differences in the spread of anesthesia between the groups and sides (mean maximum cephalad spread was T4-T5) of the patients were small and not significant. Neither were there differences in plasma bupivacaine concentrations between the groups.

  • Anesthesia
  • obstetric
  • Anesthetic techniques
  • epidural
  • Anesthetics
  • local
  • bupivacaine

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.