6338
A 74-year - old man received oral administration of pilsicainide , a pure sodium channel blocker with slow recovery kinetics , to convert paroxysmal atrial fibrillation to sinus rhythm and developed loss of consciousness two days later .
 loss of consciousness, pilsicainide
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:
 loss of consciousness, pilsicainide