IRCT201206289162N3 IRCT 2013-04-21 Tehran University of Medical Sciences The effect of intranasal Ketamine on digital nerve block pain Double-blinded placebo-control study of intranasal ketamin effects and complications in digital nerve block in traumatic hand injuries 2011-01-01 anticipated 0 Complete https://irct.ir/trial/9769 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment. N/A Local Anesthesia of Digital Nerve. Intervention 1: Control group: 2 cc identical syringes contain 1cc Ketamine(=50mg) or 1cc distilled water prepared out of emergency department in blocks of 12. In control group 1 cc of distilled water will drop in one of nostrils of patients and ask them to hold their breath as could as possible and do not cough. All patients will observe for another 30 minutes for probable complications. Intervention 2: Intervention group: 2 cc identical syringes contain 1cc Ketamine(=50mg) or 1cc distilled water prepared out of emergency department in blocks of 12. In intervention group 1 cc of Ketamine (=50 mg) will drop in one of nostrils of patients and ask them to hold their breath as could as possible and do not cough. All patients will observe for another 30 minutes for probable complications.