Times until eye opening upon request and until extubation were significantly shorter in the sevoflurane group than in the propofol group : 3.7 ( SD , 1.2 ) minutes vs 5 ( 3.1 ) minutes , respectively , for eye opening and 6.6 ( 1.2 ) minutes vs 8.1 ( 3.3 ) minutes for extubation ( P < 0.01 ) .
