[Anaphylactic shock due to "patent blue" used to search for the sentinel node].

Intraoperative search for the sentinel node using patent blue is considered a non risk procedure. We report the first case of anaphylactic shock and allergy. We emphasize the highly exceptional nature of this adverse effect previously observed in other disciplines using this coloring agent.

Stretch-induced protection shares a common mechanism with ischemic preconditioning in rabbit heart.

We sought to determine whether stretch-induced preconditioning may be related to activation of adenosine receptors, ATP-sensitive K+ (K+ATP) channels, and/or protein kinase C (PKC) in the rabbit heart. Anesthetized rabbits underwent 30 min of coronary artery occlusion followed by 3 h of reperfusion. Ischemic preconditioning was induced by one episode of 5 min of ischemia followed by 5 min of reperfusion, and stretch preconditioning was induced by a transient volume overload.

[Gas embolism during endonasal YAG laser surgery].

The authors describe a case of air embolism during an endonasal YAG laser surgery in a 10-year-old child. This accident was caused by the coaxial air cooling system of the laser ruby tip. The importance of end tidal CO2 monitoring and precordial auscultation during laser surgery even in patients without risk factors is underlined.