5 yr old child going to sitting craniotomy while positioning in O.T. developed End Tidal CO2 0mm Hg P02 80 mm Hg implies
Endotracheal tube in oesophagus
E.T. blocked with secretion
Venous air Embolism
Left lung collapse
C i.e. Venous Air embolism A patient undergoing lapro/thoraco-scopyQ or procedure (eg craniotomy) in sitting, head upQ, park-bench, knee-chest positions that place the operative site above the right atrium carry an increased risk of VAE. Sudden decrease in end-tidal CO2 concentration (ETCO?), sudden hypotension/circulatory arrest and Mill wheel murmur indicate the diagnosisQ.