One such mechanism may be the inflammatory response that arise as a consequence of the ischemia-reperfusion injury following resuscitation.6, 43 Elevated levels of cytokines and endothelial derived biomarkers is a frequent finding after cardiac arrest,44, 45, 46 which is in line with our data demonstrating elevated levels of IL-6 and TNF-α 4 h after resuscitation. Here, TNF is linked to cardiac arrest.