Q: rapid induction of anaesthesia occurs with which of the following anaesthetic agents ?
a. isoflurane
b. halothane
c. desflurane
d. sevoflurane
explanation : rapid induction of anaesthsia is seen with both desflurane and sevoflurane but desflurane is the answer as it causes more rapid induction of anaesthsia than sevoflurane .
--- the speed of induction by inhalational anaesthetics in descending order is :
1. nitrous oxide
2. desflurane
3. sevoflurane
4. isoflurane
5. halothane
--- an important point to be noted here is that “ the rate of induction of anaesthesia by inhalational anaesthetics is inversely proportional to its blood gas partition coefficient" , that is the agents with low blood gas partition coefficient like nitrous oxide will have faster rate of induction .
-- this question was asked in the AIIMS November 2002 question paper .
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