Lidocaine gel,
Drug2% lidocain gel will be applied to coresponding lumber area 30 minutes before ESWL for renal stones. Maximum of 4000 shock waves will be delivered. Rescue analgesia will be given as intravenous nalbuphine if patient demanded. Pain score is measured with visual analogue pain score from 1 to 10 after completion of procedure if patient donot needed rescue analgesia and during procedure just before giving rescue analgesia in those who demanded it.
Other names: Lignicaine