Looking for Minimum Dose to Induce Sympathectomy in Infraclavicular Brachial Plexus Block

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

66 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-06-04

Study Completion Date

2021-07-04

Brief Summary

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For patients who undergoing hemodialysis, it is important to have good AV fistula. One third of AV fistula usually fail during early stage. It is helpful to use nerve block to dilate the blood vessels and enhance the prognosis. But 0.2% Ropivacaine usually cause muscle weakness in present studies. The investigators hope to find the lowest concentration to provide sympathectomy without muscle weakness. Because the patients with hemodialysis usually have multiple co-morbidity, thus we choose patients with forearm fracture at the first place. With this result, the investigators can design further study for patients with hemodialysis. The investigators prefer proximal approach because brachial plexus run together in the cosctoclavicular space and show lower incidence of incomplete work.

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Detailed Description

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Conditions

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Finding the Minimum Dose to Induce Sympathectomy in Infraclavicular

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Interventions

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Infraclavicular brachial plexus block

Ultrasound-guided infraclavicular brachial plexus block

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Age between 20-80 y/o, BW: 40-90 kilograms，ASA class I-III，No pre-existing neuropathy，Scheduled for upper limb surgery.

Exclusion Criteria

1. Pre-existing neuropathy (ex: polyneuropathy)
2. History of allergy to xylocaine、ropivacaine、epinephrine
3. Emergent surgery
4. Coagulopathy
5. Patient who can not express themselves

Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No