12169
However , O ( 2 ) therapy remains the most common therapy of hypoxemia , but it must be carefully tailored to relieve hypoxemia without provoking hyperoxia or hypercarbia .
 Chemical: O ( 2 )
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: O ( 2 )