The effect of a compression bandage on the distribution of radiodense contrast medium after palmar digital nerve blocks.

Authors: Gylling S M K, Frandsen S S, Østergaard S, Thomsen M H, Christophersen M T, Krüger T, Jacobsen S

Journal: Equine veterinary journal

DOI: 10.1111/evj.13000 PubMed: 30071153Log in to save

Summary

# Editorial Summary: Compression bandaging and palmar digital nerve block specificity Proximal migration of injectate during palmar digital nerve blocks can compromise blockade specificity and duration, yet simple techniques to contain injectate spread have received limited investigation. Gyllen and colleagues used a randomised cross-over design to assess whether a 5 cm compression bandage applied proximal to the injection site could restrict contrast medium diffusion in nine horses receiving bilateral palmar digital nerve blocks, with radiographic assessment at 5, 10, 20 and 30 minutes post-injection. Compression bandaging significantly reduced proximal migration of contrast medium (P<0.01) whilst simultaneously inhibiting lymphatic drainage, effectively confining the injectate to the injection site. Although this study did not evaluate clinical anaesthetic outcomes, the improved localisation of injectate suggests that compression bandaging may enhance nerve block selectivity and potentially extend blockade duration—findings with meaningful implications for practitioners seeking to optimise palmar digital nerve blocks during distal limb procedures.

Read the full abstract on PubMed

Practical Takeaways

•Apply a compression bandage proximal to palmar digital nerve block injection sites to improve block specificity and potentially extend duration of effect
•Compression bandages reduce unwanted proximal spread of local anesthetic, which may reduce side effects and improve targeted pain relief
•Simple, non-invasive technique using standard 5 cm wide bandaging material that could be easily incorporated into routine nerve block protocols

Key Findings

•Proximal diffusion of contrast medium was significantly reduced (P<0.01) when a 5 cm compression bandage was applied proximal to the injection site
•Compression bandage inhibited lymphatic drainage of injected contrast medium
•Contrast medium remained more localized around the injection site with compression bandage application
•Effect was demonstrated consistently across radiographic timepoints from 5 to 30 minutes post-injection

Conditions Studied

palmar digital nerve blocksperineural drug diffusion

Related References

Clinical Research Abstracts of the British Equine Veterinary Association Congress 2015.

Malton R, Nagy A(2015)Equine veterinary journal

Distribution of radiodense contrast medium after perineural injection of the palmar and palmar metacarpal nerves (low 4-point nerve block): an in vivo and ex vivo study in horses.

Nagy A, Bodò G, Dyson S J, Compostella F, Barr A R S(2010)Equine veterinary journal

Diffusion of contrast medium after four different techniques for analgesia of the proximal metacarpal region: an in vivo and in vitro study.

Nagy A, Bodó G, Dyson S J(2012)Equine veterinary journal

Gruyaert Mounia, Oosterlinck Maarten, Haspeslagh Maarten, Nagy Annamaria(2024)Frontiers in veterinary science

Duration of action of mepivacaine and lidocaine in equine palmar digital perineural blocks in an experimental lameness model.

Hoerdemann Mona, Smith Rachael L, Hosgood Giselle(2017)Veterinary surgery : VS