Up in Flames: The Safety of Electrocautery Trephination of Subungual Hematomas with Acrylic Nails.

Claude Blereau,Justin Grisham,Steven Radloff

doi:10.5811/westjem.2021.10.53567

Abstract

IntroductionSubungual hematomas are fingertip injuries, generally secondary to blunt trauma, that cause pain due to an accumulation of blood under the fingernail. It is generally considered standard of practice to relieve this accumulation by means of trephination with a hollow tip needle, a heated paper clip, or electrocautery. It has been assumed that due to the flammable properties of acrylic, trephination via electrocautery has the potential to ignite acrylic nails and cause burns and other potentially serious injury, making electrocautery contraindicated in patients with acrylic nails. Our thorough literature review failed to support or refute this assumption; so in the interest of ensuring that this practice is evidence-based, we sought to explore this topic.MethodsIn this study we used electrocautery trephination on acrylic nail products attached to simulated digits and recorded the presence and frequency of ignition events. We hypothesized that ignition would occur with sufficient frequency to support continuing the practice of avoiding electrocautery trephination in subungual hematomas with overlying acrylic nails.ResultsIn our study, we exposed 200 acrylic nails to trephination with electrocautery, and 83 nails ignited (41.5%).ConclusionWhile other variables exist, these findings do support the current practice pattern of avoiding trephination with electrocautery in those patients with acrylic nails overlying subungual hematomas.

Highlights

Subungual hematomas are fingertip injuries, generally secondary to blunt trauma, that cause pain due to an accumulation of blood under the fingernail
Of the total 200 acrylic nails exposed to electrocautery trephination in this study (n = 200), 83 ignited (Table)
Acrylic nail igniting on simulated fingertip after trephination with an electrocautery pen

Summary

Introduction

Subungual hematomas are fingertip injuries, generally secondary to blunt trauma, that cause pain due to an accumulation of blood under the fingernail It is generally considered standard of practice to relieve this accumulation by means of trephination with a hollow tip needle, a heated paper clip, or electrocautery. A subungual hematoma is an accumulation of blood under the fingernail that develops when damage occurs to the richly vascular nail bed, generally as the result of a blunt trauma or crush injury to that nail bed.[1,2] These injuries present to the emergency department (ED) frequently[3,4]; they classically present with pain and a dark discoloration under the nail following a minor crush injury to the distal finger. In this study we sought to explore this assumption, as Articles in Press

Methods

Results

Discussion

Conclusion