MedTrace Logo

A Comparison of Postoperative Analgesic Nerve Block Ropivacaine Concentrations

NCT01556724 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 41

Last updated 2018-01-17

Study results available
· View outcomes & findings →

Summary

Peripheral nerve blocks are the standard of care for pain management after hip replacement surgery at UPMC Shadyside. This prospective, randomized study is intended to assess the effect of 0.1 versus 0.2% ropivacaine in lumbar plexus nerve catheter infusions after total hip arthroplasty. Ropivacaine peripheral nerve block infusions have been utilized as the standard of care at UPMC Shadyside for many years. Ropivacaine, a less potent left-isomer of bupivacaine, is often used in place of bupivacaine due to less motor blockade and less severe cardiovascular and central nervous system potential toxicity.

The primary goal of this study to examine the effect of a low concentration infusion of ropivacaine (0.1%) on postoperative analgesia (evaluated by opioid consumption after 36 hours) compared with the standard accepted concentration of 0.2% ropivacaine in lumbar plexus catheters after primary total hip arthroplasty. Secondary goals are to examine motor function, VAS scores and patient satisfaction with pain control in low concentration 0.1% ropivacaine compared with 0.2% ropivacaine lumbar plexus infusions upto 36 hours after primary total hip arthroplasty.

Conditions

  • Total Hip Arthroplasty
  • Postoperative Pain

Interventions

DRUG

0.1% or 0.2% ropivacaine nerve blocks

Either 0.1% or 0.2% ropivacaine will be infused at 7 mL/hr through lumbar plexus nerve block catheter based upon randomization, and can then receive a 6 ml bolus of either 0.1% or 0.2% ropivacaine. Additional pain relief will be available by nurse administered boluses of additional local anesthetic (from their randomized infusion) with a maximum dose of an extra 3 ml per bolus and limited to one bolus per hour. This bolus of their randomized local anesthetic will remain available until the nerve catheters are removed. Nerve block infusion rates may be increased to 9 ml/h for patients with increased pain without increased motor blockade as determined by the acute interventional perioperative pain service (AIPPS) or decreased to 5 ml/h for patients with increased motor blockade or weakness from the peripheral nerve block as determined by the AIPPS .All continuous lumbar plexus catheters will be removed on post operative day (POD) 2.

Sponsors & Collaborators

  • Sylvia Wilson

    lead OTHER

Principal Investigators

  • Sylvia Wilson, MD · University of Pittsburgh Medical Center

  • Jacques E Chelly, MD, PhD, MBA · University of Pittsburgh Medical Center

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2010-01-31
Primary Completion
2011-05-31
Completion
2014-12-31

Countries

  • United States

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01556724 on ClinicalTrials.gov