The Effect of Different Doses (Mass) of Local Anesthetic on Duration of Adductor Canal Block in Healthy Volunteers - Part 2

November 17, 2014 updated by: Pia Jaeger, Rigshospitalet, Denmark

To investigate whether increased dose of local anesthetic (lidocaine) increases duration of peripheral nerve block (adductor canal block) and to develop a model for assessing duration of peripheral nerve blockades. The investigators hypothesize that increasing the dose of lidocaine (by increased concentration) will increase the duration of an adductor canal block.

The study is a follow up on an identical study (SM1-PJ-13, EudraCT number: 2013-001822-24 ) made earlier with different concentrations of lidocaine and a placebo group. For further information see trial registration at European Union Drug Regulatory Authorities Clinical Trial System.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

14

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Denmark
      • Copenhagen, Denmark, 2100
        • Rigshospitalet, Centre of Head and Orthopaedics, Department of Anaesthesia

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 30 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • ASA 1
  • Body mass index 18-25

Exclusion Criteria:

  • Allergy to study medication
  • Earlier trauma or surgery to lower limb
  • Diabetes Mellitus

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: ACB with lidocaine 5 mg/ml
Adductor canal block (ACB) with 20 ml lidocaine 5 mg/ml, single bolus
Drug: Adductor canal block with 20 ml lidocaine, single bolus
Duration of an adductor canal block with 20 ml lidocaine, single bolus, administered as 5 or 15 mg/ml
Experimental: ACB with lidocaine 15 mg/ml
Adductor canal block with 20 ml lidocaine 15 mg/ml, single bolus
Drug: Adductor canal block with 20 ml lidocaine, single bolus
Duration of an adductor canal block with 20 ml lidocaine, single bolus, administered as 5 or 15 mg/ml

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Duration of sensory block assessed with pinprick.
Time Frame: 0-10 hours
Duration is defined as the time from block performance until recovery of sensation to pin-prick stimulus, assessed at 30 and 60 minutes post block, and thereafter every hour.
0-10 hours

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Duration of sensory block assessed by heat pain detection threshold
Time Frame: 0-10 hours
Duration is defined as time from block performance until recovery of normal sensation (+/- 2 degrees Celsius from preblock value) assessed at 30 and 60 minutes post block, and thereafter every hour.
0-10 hours
Duration of sensory block assessed by warmth detection threshold
Time Frame: 0-10 hours
Duration is defined as time from block performance until recovery of normal sensation (return to baseline value + 2 degrees Celsius or less from preblock value) assessed at 30 and 60 minutes post block, and thereafter every hour.
0-10 hours
Duration of sensory block assessed by pain during 1 minute of warmth stimulation
Time Frame: 0-10 hours
Duration is defined as time from block performance until recovery of normal sensation (return to baseline VAS pain scores +/-10 mm from preblock value) assessed at 30 and 60 minutes post block, and thereafter every hour.
0-10 hours
Duration of sensory block assessed by tolerance to transcutaneal electrical stimulation
Time Frame: 0-10 hours
Duration is defined as time from block performance until recovery of normal sensation (return to baseline preblock value) assessed at 30 and 60 minutes post block, and thereafter every hour.
0-10 hours
Duration of sensory block assessed by cold sensation with an alcohol swab
Time Frame: 0-10 hours
Duration is defined as time from block performance until recovery of normal sensation assessed at 30 and 60 minutes post block, and thereafter every hour.
0-10 hours
Duration of motor block assessed as maximum voluntary isometric contraction.
Time Frame: 0-10 hours
Duration is defined as time from block performance until recovery of normal muscle strength, assessed at 30 and 60 minutes post block, and thereafter every hour.
0-10 hours
Time to onset of sensory block assessed by pinprick.
Time Frame: 0-2 hours
Onset is defined as the time from block performance until loss of sensation to pin-prick stimulus assessed at 30 and 60 minutes post block, and thereafter every hour.
0-2 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Rigshospitalet, Denmark

Investigators

  • Study Chair: Jørgen B Dahl, Professor, Rigshospitalet, Denmark

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2014

Primary Completion (Actual)

July 1, 2014

Study Completion (Actual)

July 1, 2014

Study Registration Dates

First Submitted

June 20, 2014

First Submitted That Met QC Criteria

June 23, 2014

First Posted (Estimate)

June 24, 2014

Study Record Updates

Last Update Posted (Estimate)

November 18, 2014

Last Update Submitted That Met QC Criteria

November 17, 2014

Last Verified

November 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SM1-PJ-14
  • 2014-001752-31 (EudraCT Number)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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