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The results suggest that a prolonged combination of more than 120 min of PGE1 - induced hypotension and moderate haemodilution would cause impairment of hepatic function .
 PGE1, hypotension, haemodilution, impairment of hepatic function
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 PGE1, hypotension, haemodilution, impairment of hepatic function