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Minimum Effective Volume Of Local Anesthetic İn USG Guided Axillary Approach Brachial Plexus Block

NCT02837718 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 55

Last updated 2020-01-13

No results posted yet for this study

Summary

Background Peripheral nerve blocks with use of USG allowed visualisation of the structures and nerves and made the block administrations safe, quick and comfortable. However there are few publications concerning the minimum local anesthetic volume capable of providing blocks. In this study the investigastors aimed to find Minimum Effective Volume Of Local Anesthetic For Ultrasound-Guided Axillary Brachial Plexus Block in hand, elbow and forehand operations.

Materials \& Methods A total of 55 ASA I-II patients underwent hand surgery operation by administering USG guided-axillary brachial plexus blockage were included in the study. Ulnar, median and radial nerves were seen and the minimum effective local anesthetic volume was investigated starting with total 21 ml of %0.5 bupivacain. After accomplishing the blockage, volume was decreased by 0.5 for each nerves. Block administration time, block onset times, anesthesia times and time to first analgesic requirement were recorded.

Conditions

  • Underdosing of Local Anesthetics

Interventions

PROCEDURE

bupivakain % 0,5

Bupivacaine 0,5% The study method was a step-up/step-down sequence model where the dose for following patients was determined by the outcome of the preceding block. The starting dose of bupivacaine was 5 mL per nerve. In the case of block failure, the dose was increased by 0.5 mL per nerve. Conversely, block success resulted in a reduction in dose by 0.5 mL per nerve. Each of the three nerves was treated as a separate entity. Dose adjustments were made to each nerve individually. The volume dose was increased in 0.5 mL at every 5 consecutive cases regardless of the result of the previous block in order to minimize bias occurence. A blinded assistant assessed sensory and motor blockade at 5-min intervals up to 30 min.

Sponsors & Collaborators

  • Ankara City Hospital Bilkent

    lead OTHER

Study Design

Purpose
PREVENTION
Masking
NONE
Model
SEQUENTIAL

Eligibility

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

Timeline & Regulatory

Start
2014-12-31
Primary Completion
2015-04-30
Completion
2015-08-31

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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 NCT02837718 on ClinicalTrials.gov