Neurological complications of vascular access

Area of Science:

• Nephrology
• Neurology
• Vascular Surgery

Background:

• Neurological problems are prevalent in hemodialysis patients, with over 60% experiencing polyneuropathy due to uremia or diabetes.
• Subclinical nerve disease is common, detectable via nerve conduction studies.
• Nerve injuries from hemodialysis access surgery are underreported but can include sensory nerve lesions and compression syndromes.

Purpose of the Study:

• To review the spectrum of neurological complications associated with hemodialysis and its surgical access.
• To highlight the importance of recognizing and managing treatable nerve conditions like carpal tunnel syndrome.
• To discuss the rare but severe Ischemic Monomelic Neuropathy (IMN) and its management.

Main Methods:

• Literature review of neurological complications in hemodialysis patients.
• Analysis of nerve injury types, including polyneuropathy, compression syndromes, and ischemic neuropathy.
• Discussion of diagnostic considerations and treatment strategies.

Main Results:

• Polyneuropathy affects over 60% of patients; nerve compression syndromes (e.g., carpal tunnel) are common, often exacerbated by dialysis access.
• Sensory nerve lesions post-access surgery are likely common but usually not debilitating.
• Ischemic Monomelic Neuropathy (IMN) is a rare but severe complication of access surgery, characterized by intense pain and progressive nerve damage.

Conclusions:

• Neurological issues are a significant concern for hemodialysis patients, ranging from polyneuropathy to access-related nerve injuries.
• Early diagnosis and intervention, including surgical decompression for compression syndromes, are essential.
• Prompt management of ischemia is critical for IMN, while other severe complications like reflex sympathetic dystrophy have limited treatment options beyond symptomatic relief.