Question 1. During craniotomy, the end-tidal CO2 decreases from 33 mm Hg to 20 mm Hg. The possible causes are: Hypotension Air Embolism Both of the above None of the above	Question 2. Elevated base line of capnogram (phase 0) suggests: Re-breathing of carbon dioxide Contamination of capnograph Inspiratory valve malfunction All of the above
Question 3. During laparoscopy, possible occurrence of carbon dioxide embolism: Sudden increase in end-tidal CO2 followed by a decrease Dual capnogram Elevated base line of capnogram Prolongation of phase 2 (upstroke) of capnogram	Question 4. Malignant hyperpyrexia is suggested by: Increasing end-tidal carbon dioxide Prolongation of phase 2 Sloping phase 3 of capnogram All of the above
Question 5. The signature capnogram is a hallmark of: Closed circuit anesthesia Mapelson D circuit Non rebreathing circuit None of the above	Question 6. End-tidal carbon dioxide and cardiac output are: Directly related Inversely related Not related Both directly and inversely related
Question 7. For given minute ventilation, the end-tidal CO2 is a function of: Carbon dioxide production Cardiac output Alveolar dead space All of the above	Question 8.  During pneumothroax, the end-tidal CO2 may:  Increases Decreases No change All of the above
Question 9. The arterial to end tidal CO2 difference is decreased in all circumstances except: Infants Pregnancy High tidal volume low frequency ventilation Hypotension	Question 10. In healthy subjects undergoing anesthesia with LMA, the arterial to end-tidal CO2 difference is _____ as compared to anesthesia with endotracheal tube : Increased Decreased Not changed Variable