NCT06931756

Effects of Uremia on Brachial Plexus Electrophysiology and Brachial Plexus Block

Effects of Uremia on Brachial Plexus Electrophysiology and Brachial Plexus Block: One Prospective Parallel Cohort Study

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 60 (estimated)
• Sponsor: Nanjing First Hospital, Nanjing Medical University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

As a late stage of renal failure, uremia not only leads to severe impairment of renal function in patients, but also often leads to a variety of complications, among which multiple peripheral neuropathy is particularly common. This lesion is mainly caused by the combination of multiple mechanisms, such as the accumulation of uremic toxins, electrolyte disorder, nutrient deficiency and factors related to hemodialysis. Therefore, it is important clinical significance to deeply explore the effects of uremia on electrophysiological properties and nerve block of brachial plexus. At present, there are relatively few studies on the effects of uremia on the brachial plexus, especially the prospective parallel cohort studies on its electrophysiological properties and nerve block. As a new anesthetic technique, ultrasound-guided axillary brachial plexus block has the advantages of precise positioning, scientific administration, reducing complications and improved safety, but the application effect and safety in uremic patients still need to be further verified.

Conditions

• Electrical Stimulation of Nerves Produces Muscle Reflexes

Interventions

Type	Name	Description
DEVICE	Neural Stimulator	Adjust the neural stimulator, with a stimulation duration of 0.1 ms, a stimulation frequency of 1Hz, and a stimulation current of 1.0mA. Under ultrasound guidance, the needle tip is used to touch the radial nerve, ulnar nerve, median nerve, and musculocutaneous nerve respectively, until a clear motor response is observed in the corresponding muscles. Thereafter, the minimum stimulation threshold current is verified by reducing the current until the distal motor response disappears. If no motor response is elicited, the current intensity is appropriately increased to achieve a motor response of the extensor tendon of the radial nerve, and the flexor tendon motor responses of the ulnar nerve, median nerve, and musculocutaneous nerve.

Timeline

• Start date: 2025-04-20
• Primary completion: 2026-06-30
• Completion: 2026-12-01
• First posted: 2025-04-17
• Last updated: 2025-04-17