|12-Lead ECG obtained approximately 5 minutes after ROSC|
Closer inspection of the lateral precordial leads reveals the ST-elevations present are actually giant J-waves, or Osborn waves.
|J-waves--or Osborn waves--appreciated in the lateral precordial leads|
|Subsequent 12-Lead ECG obtained 17 minutes after ROSC|
|Comparison of the precordial leads between the first and subsequent 12-Lead ECG.|
One explanation for the normalization of the traditional electrocardiographic findings of hypothermia may be related to the management of the patient's ventilation both intra-arrest and post-arrest. As the patient's pH normalized with mechanical ventilation and a perfusing rhythm, so did the repolarization abnormalities (visualized as J-waves).
- Antzelevitch C, Yan GX. J Wave Syndromes. Heart Rhythm. 2010; 7(4):549-558. [FullText]
- Fenstad ER, et al. Therapeutic hypothermia in out of hospital sudden cardiac arrest: Significance of J-waves. J Am Coll Cardio. 2011; 57(14):Suppl 5, E1002. [PDF FullText]
- Edelman ER, Joynt K. J Waves of Osborn Revisited. J Am Coll Cardio. 2010; 55(20):2287. [PubMed]
- Dr. Smith's ECG Blog: Osborn Waves and Hypothermia.