What is 5 year old child going for sitting craniotomy, while positioning in O.T. developed end tidal CO2- Zero mmHg, PO2- 80 mm Hg implies that : and explain in detail?
Ans. is 'a' i.e. Venous Air embolismThe cranial sinuses have negative air pressure.So, it is possible that if the pt. is in the wrong position while operation, the sinuses may suck some air d/t their negative pressure which can cause a venous embolism.The given value for the gases can occur only in Venous air embolism.