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ECG Disease Patterns
 
ECG Disease Patterns
 

Hypothermia: ECG Findings

 
 
 
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Overview

Hypothermia refers to a reduction in body temperature below 35 degrees celcius. ECG findings may be seen with profound hypothermia, and particularly below 32 degrees.
Osborn waves, or J waves, are a classic finding in hypothermia. They may also be seen in hypercalcaemia and early repolarisation syndrome. A J wave is a hump-like deflection after the J point, which is the junction between the QRS complex and the ST segment. 
  •  
  • ECG Findings in Hypothermia

  • Movement artefact due to shivering
  • Osborn waves (J waves) - a dome or hump-shaped deflection following the J point
  • PR, QRS and QT prolongation
  • Arrhythmias

  • Bradyarrhythmias - bradycardia, AV block, slow AF, progression to asystole
  • Tachyarrhythmias - atrial fibrillation, ventricular tachycardia, ventricular fibrillation
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