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Injection neuropathy — Clinical Guidelines

Overview

Injection neuropathy refers to nerve damage resulting from traumatic injections, often leading to pain, functional deficits, and complications such as pneumorrhachis or severe infections in vulnerable populations like injection drug users. 1 3 4 5

Diagnosis

Clinical Presentation: Pain, swelling, and functional impairment post-injection.

Imaging: CT or MRI may reveal structural damage or complications like pneumorrhachis 4.

Laboratory Tests: Elevated white blood cell count in cases of severe infections 5.

Specific Complications: High-pressure injection injuries may require detailed imaging to assess tissue damage 3.

Management

First-Line Treatments:

- Early Exploration and Debridement: For high-pressure injection injuries to prevent complications 3. - Antibiotics: For suspected or confirmed infections, tailored to isolated pathogens 5.

Adjunctive Treatments:

- Lidocaine: To reduce pain associated with propofol injection during anesthesia 1. - Sedation Regimens: Tailored to minimize adverse events, particularly in high-risk groups like injection drug users 2.

Special Populations

Injection Drug Users: Higher risk of severe infections (e.g., Clostridium novyi type A) and adverse events during procedural sedation 2 5.

Elderly: Increased susceptibility to complications like pneumorrhachis post-procedures 4.

Key Recommendations

Early Surgical Intervention: For high-pressure injection injuries to optimize functional recovery 3 (Evidence: Strong).

Tailored Sedation Protocols: Use propofol alone or combined with ketamine for lower adverse event rates in injection drug users 2 (Evidence: Moderate).

Antibiotic Therapy: Initiate broad-spectrum antibiotics promptly in cases of suspected severe infections among injection drug users 5 (Evidence: Strong).

References

1 Euasobhon P, Dej-Arkom S, Siriussawakul A, Muangman S, Sriraj W, Pattanittum P et al.. Lidocaine for reducing propofol-induced pain on induction of anaesthesia in adults. The Cochrane database of systematic reviews 2016. link 2 Xavier Scheuermeyer F, Andolfatto G, Qian H, Grafstein E. Does the sedation regimen affect adverse events during procedural sedation and analgesia in injection drug users?. CJEM 2013. link 3 Sirinoğlu H, Ersoy B, Bayramiçli M. Late presentation of a case of high pressure cement injection injury to the hand. Journal of plastic surgery and hand surgery 2013. link 4 De Oliveira GS, Charchaflieh J, Walega D. Pneumorrhachis mimicking meningitis after a paramedian lumbar interlaminar injection. The Clinical journal of pain 2011. link 5 McGUIGAN CC, Penrice GM, Gruer L, Ahmed S, Goldberg D, Black M et al.. Lethal outbreak of infection with Clostridium novyi type A and other spore-forming organisms in Scottish injecting drug users. Journal of medical microbiology 2002. link 6 Wells DT. Subcutaneous emphysema in a finger following an injection injury. The Hand 1976. link90062-0)

Injection neuropathy