The Minimum Effective Concentration of Lidocaine for Ultrasound-guided

Status Recruiting

Clinical Trial Summary

The arteriovenous fistula creation (AVF creation) surgery is essential among patients with end stage renal disease who require hemodialysis. The fistula usually locates at forearm, and is created by connecting artery and vein through surgery. Patients undergone hemodialysis through the fistula six weeks later if fistula becoming mature, which means patent vessel diameter and enough flow for hemodialysis. The primary failure rate of arteriovenous fistula creation is about 20% to 40% according to previous research data. Thrombosis is the most common cause of fistula failure, which require surgical intervention after arteriovenous fistula surgery. Anesthetic technique influences surgical outcome of arteriovenous fistula. General anesthesia, regional anesthesia, and local anesthesia are both wide-used methods. Regional anesthesia with nerve block remains the most popular method for arteriovenous fistula creation. The vessel dilation effect of regional anesthesia helps not only dilatation of artery and vein, but also the fistula itself, and promotes the successful functional dialysis. Various type of nerve block are used as anesthetic method for AVF creation surgery. People requiring hemodialysis usually have multiple underlying disease involving other major organ such as heart, lung, liver, and the endocrine system. They are more vulnerable to systemic intravenous anesthetic medication. The metabolic rate and pharmacodynamics of local anesthetic may also alter due to multiple systemic disease when compared with healthy adults. The optimal concentration of lidocaine for AVF creation when using axillary block has not yet been studied. This research is conducted for dosing response of different concentration of lidocaine when using axillary block for AVF creation surgery. We aim to investigate the optimal low effective concentration, the MEC90, which defined as 90% of patients can tolerate the operation at this concentration.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT05063578
Study type	Interventional
Source	Far Eastern Memorial Hospital
Contact
Status	Recruiting
Phase	N/A
Start date	September 20, 2021
Completion date	December 31, 2022

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

The Minimum Effective Concentration of Lidocaine for Ultrasound-guided Axillary Block for Arterio-venous Fistula Creation Surgery

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms