Electrical Injury Tags - Differential Diagnosis of https://ddxof.com/tag/electrical-injury/ A systematic approach to the evaluation and management of various complaints. Wed, 24 Jan 2018 21:45:54 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.1 https://ddxof.com/wp-content/uploads/2017/08/cropped-ddxof@1x-1-32x32.png Electrical Injury Tags - Differential Diagnosis of https://ddxof.com/tag/electrical-injury/ 32 32 46076767 Electrical Injuries https://ddxof.com/electrical-injuries/ Fri, 10 Feb 2017 08:00:58 +0000 http://ddxof.com/?p=1857   Physics High-voltage defined as >1,000V Voltage related to injuries current via resistance (V=IR) AC is 3x more lethal than DC Fluctuation at 60Hz causes tetany, maintained grasp on source Effects Dysrhythmia DC: asystole AC: ventricular fibrillation Delayed dysrhythmia uncommon Burn Tissue ischemia: vascular spasm or thrombosis CNS: AMS, seizure, ICH, neuropathy MSK: posterior shoulder... Continue reading →

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Physics

  • High-voltage defined as >1,000V
  • Voltage related to injuries current via resistance (V=IR)
  • AC is 3x more lethal than DC
    • Fluctuation at 60Hz causes tetany, maintained grasp on source

Effects

  • Dysrhythmia
    • DC: asystole
    • AC: ventricular fibrillation
    • Delayed dysrhythmia uncommon
  • Burn
  • Tissue ischemia: vascular spasm or thrombosis
  • CNS: AMS, seizure, ICH, neuropathy
  • MSK: posterior shoulder dislocation

Management

  • Asymptomatic: None
  • Mild (i.e. small burn): ECG, UA (rhabdo)
  • High voltage: Labs, CT, admit for observation
  • Pediatrics: oral commissure burn, discharge with plastic surgery follow-up if no LOC, normal ECG, tolerating PO. Risk of delayed labial artery bleeding.

Complications

  • Keraunoparalysis: current travels up and down lower extremities causing transient paresthesia and paralysis.
  • Trauma: TM rupture, other mechanical injuries

 

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