18764
AIMS : The purpose of this article was to review the current literature in regards to using ketamine in patients with traumatic brain injuries in different clinical settings associated with anesthesia , as well as review the potential mechanisms underlying the neuroprotective effects of ketamine .
 Chemical: ketamine; Chemical: ketamine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ketamine; Chemical: ketamine