,PREP:,  4/4.,DIFFICULTY:,  1/4.,PREMEDICATION AND SEDATION: , Fentanyl 100, midazolam 5.,INDICATION FOR PROCEDURE:,  A 64-year-old male who has developed alternating hard and soft stools. 
,PREP : , 4/4.,DIFFICULTY : , 1/4.,PREMEDICATION AND SEDATION : , Fentanyl 100 , midazolam 5.,INDICATION FOR PROCEDURE : , A 64 - year - old male who has developed alternating hard and soft stools .