The impact of neuromuscular blocking agents on traction forces during total hip replacement surgery

Not Applicable

Recruiting

• Conditions: pulling force in Newton reqired to visualize the femoral neck during hip replacement surgery; Anaesthesiology - Anaesthetics; Surgery - Other surgery

• Registration Number: ACTRN12615000103561
• Lead Sponsor: Thomas Ledowski

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2015-02-05
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

• Status: Recruiting
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

scheduled for hip replacement surgery under general anaesthesia

Exclusion Criteria

neuromuscular disease, regional or spinal anaesthesia, paralysis at start of surgery

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Change of traction forces required to visualize the femoral neck before and after paralysis with rocuronium.<br>Assessment via a custom-made strain gauge inserted between the shoe-part (fixation of patient foot) and the handle-part (tractioning device applying force to leg). Strain gauge conected via 2 input cables to laptop PC showing and recording all changes in force (N) online.[Start of surgery, at time of initial approach to the femoral neck.]

Secondary Outcome Measures

Name	Time	Method
Change of traction forces with onset of paralysis after rocuronium administration (from no to full paralysis)<br>Assessment via a custom-made strain gauge inserted between the shoe-part (fixation of patient foot) and the handle-part (tractioning device applying force to leg). Strain gauge conected via 2 input cables to laptop PC showing and recording all changes in force (N) online.<br>Assessment of neuromuscular blockade via NMT module for ulnar nerve stimulation (GE Healthcare, Helsinki, Finland).[As timepoint 1: at the start of surgery at the time of femoral neck approach.]