234
Ketamine should only be used in an environment such as the emergency department , where proper one - on - one monitoring is used and board - certified physicians skilled in airway management are directly involved in the care of the patient .
 Ketamine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Ketamine