3440
We present two cases of anaphylaxis under anaesthesia where return of spontaneous circulation was refractory to epinephrine , but occurred following the administration of the alpha - agonist metaraminol .
 anaphylaxis, metaraminol
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 anaphylaxis, metaraminol