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Echogenic Versus Stimulating Needle and Catheter for Sciatic Blocks

NCT01492660 · Status: COMPLETED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 70

Last updated 2013-04-23

No results posted yet for this study

Summary

Patients scheduled for total knee replacements and suitable for sciatic nerve block will be randomized to one of 2 groups.

Group 1 will have the nerve block performed using a standard Pajunk block needle under ultrasound guidance and with electrical nerve stimulation (ENS), and have catheter placement also guided by electrical nerve stimulation. Group 2 will have the block performed using a Sonoplex echogenic block needle and have an echogenic catheter sited, all under ultrasound (US) guidance. Group 2 will have needle location aided by ENS, but ENS will not be used for catheter location.

An observer blinded to the needle type will assess the quality of needle visualisation on a recording of the US image taken during the procedure, along with adequacy of spread of local anesthetic. The primary outcome will be needle visibility, and secondary outcomes will be block success rate, block performance time, complication rate, number of needle passes per block, and adequacy of spread of local anesthetic.

Conditions

  • Osteoarthritis Knee
  • Postoperative Pain

Interventions

DEVICE

echogenic needle and catheter

Visibility of needle shaft and tip with engraved markers. Ultrasonographic Visibility of catheter tip

DEVICE

Neurostimulation to position needle and catheter

The non echogenic needle will be positioned using ultrasonography and neurostimulation and the catheter will be positioned using neurostimulation with plantar or dorsiflexion with 0.6-1.5mA current. 20mL of 2% mepivacaine will be injected via the catheter. Sensory motor block will be evaluated every 5 minutes for 30 mins

Sponsors & Collaborators

  • The Physicians' Services Incorporated Foundation

    collaborator OTHER

  • London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's

    lead OTHER

Principal Investigators

  • Sugantha Ganapathy · Professor, Director, regional and Pain reseaerch

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

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

Timeline & Regulatory

Start
2012-01-31
Primary Completion
2013-01-31
Completion
2013-01-31

Countries

  • Canada

Study Locations

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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 NCT01492660 on ClinicalTrials.gov