1977
The current sedation protocol progressively increased the rate of successful sedation ( able to complete the imaging study ) when using dexmedetomidine alone from 91 . 8 % to 97 . 6 % ( P = 0 . 009 ) , reducing the requirement for adjuvant pentobarbital in the event of sedation failure with dexmedetomidine alone and decreased the mean recovery time by 10 min ( P < 0 . 001 ) .
 Chemical: dexmedetomidine; Chemical: pentobarbital; Chemical: dexmedetomidine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: dexmedetomidine; Chemical: pentobarbital; Chemical: dexmedetomidine