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The Mininimum Effective Anaesthetic Volume of Local Anaesthetic in Ultrasound-guided "Shamrock" Lumbar Plexus Block

University of Oslo (UIO) logo

University of Oslo (UIO)

Status

Completed

Conditions

Mininimum Effective Anaesthetic Volume of Local Anaesthetic

Treatments

Other: lumbar plexus block

Study type

Interventional

Funder types

Other

Identifiers

NCT01956617
2013/1328-3

Details and patient eligibility

About

The "Shamrock method" is a new ultrasound-guided lumbar plexus block. The aim of the study is to determine the minimum effective volume of ropivacaine 0.5% required to produce an effective lumbar plexus block with this method. Using the Dixon and Massey up-and-down method study design, 30 patients scheduled for elective total hip and knee arthroplasty will be included in the study.

Enrollment

30 estimated patients

Sex

All

Ages

18 to 70 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • orthopaedic patients scheduled for elective hip and knee arthoroplasty
  • ASA 1 - 2 or stable ASA 3
  • age between 18 and 70 years
  • good ability to communicate and to cooperate

Exclusion criteria

  • ASA > 3 or unstable ASA 3
  • BMI > 32
  • chronicle pain
  • nephrological diseases or nephropathy
  • known contraindications against the use of local anaesthetics
  • pregnancy

Trial design

30 participants in 1 patient group

injection volume
Other group
Description:
block success or failure determines a 5 ml decrease or increase for the subsequent patient, respectively
Treatment:
Other: lumbar plexus block

Trial contacts and locations

2

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Data sourced from clinicaltrials.gov

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