A 64 year old hypeensive obsese female was undergoing surgery for fracture femur under general anaesthesia. Intra-operatively her end-tidal carbon dioxide decreased to 20 from 40 mm of Hg, followed by hypotension and oxygen saturation of 85%. What could be the most probable cause?
A i.e. Fat embolism
Fat embolism
Hypovolemia
Bronchospasm
Myocardial infarction