4450
We present a case in which dipyridamole induced high - grade atrioventricular ( AV ) block that responded promptly to intravenous aminophylline but not to atropine .
 high - grade atrioventricular ( AV ) block, dipyridamole
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:
 high - grade atrioventricular ( AV ) block, dipyridamole