ELSEVIER-ANESTHESIA questions with correct answers

1. Train of four fade is characteristic feature of: A. Non depolarizing block B. Depolarizing block C. Malignant hyperthermia D. Both depolarizing and non-depolarizing block Answer A. Non depolarizing block 2. Not True regarding sevoflurane: a. MAC is higher than isoflurane b. Blood gas coefficient is higher than desflurane c. Potency more than isoflurane d. Sevoflurane is less cardio depressant than isoflurane Answer c. Potency more than isoflurane Minimum alveolar concentration (MAC): This is a measure of potency. It is defined as "at steady-state, the minimum alveolar concentration of the volatile anaesthetic that prevents reaction to standard surgical stimuli (skin incision) in 50 per cent of subjects at sea level (1 atm). According to MAC value: Desflurane> Sevoflurane > Enflurane > Isoflurane > Halothane