The ECG findings of hypothermia include:
An "Osborne wave" characterized by a notch in the downward portion of the R wave in the QRS complex.
Bradycardia: This can be sinus bradycardia, junctional bradycardia, atrial fibrillation with a slow ventricular response or higher grade AV blocks.
Baseline artifact from shivering
1. Surawicz B et al. ACC/AHA recommendations for the standardization and interpretation of the electrocardiogram. Circulation. 2009;119:e235-240.
2. Chou's Electrocardiography in Clinical Practice: Adult and Pediatric, 6e
By Steven Lome