Flat capnogram found in A/E: (A) Disconnection of anesthetic tubing, (B) Accidental extubation, (C) Mechanjca1 ventilation failure, (D) Bronchospasm
Answer is D. in bronchospasm,there is prolonged expiratory upstroke(abscence of phase 3 plateau). in tube displacement,disconnection,accidental extubation,ventilation failure,it is flat.