Epidural trial in implantation of intrathecal morphine infusion pumps.

This retrospective review permits limited conclusions due to the small sample size and the limited control of variables. The temporary prepump, percutaneous epidural catheter trial is a useful component of our protocol. This period provides important information relative to possible side effects and efficacy of pain. The trial does give an estimation for the starting point of the intrathecal dosage but, as we have demonstrated, this is, at times, at a greater dosage than previously had been predicted. We feel that this retrospective review supports the continued use of a prepump trial of epidural morphine prior to permanent intrathecal pump implantation.