Most impoant factor determining the affect of anaesthetic agent on fetus ?
Ans. is 'a' i.e., Duration of pregnancy All the given options determine the effect of anaesthetic on fetus. But, duration of pregnancy is the most impoant. Almost all anaesthetic agents can be potentially teratogenic. Day 15th to day 60 is the most critical period.
Duration of pregnancy
MAC
Protein binding
Route of anaesthetic