[Initial experience with preorally administered dipotassium clorazepate and tilidine-naloxone in extracorporeal shockwave lithotripsy].

After 70 treatments with extracorporeal shock wave lithotripsy (ESWL), using a combination of dipotassiumclorazepate p.o. 12 h before treatment and tilidin-naloxon 45 min before ESWL, 56 patients reported to be painfree or only minor, well-tolerable pain. Informed consent was obtained in all patients for this pilot study, leaving the possibility of further pain medication. 7 patients asked for an additional analgesic (fentanyl) and another 7 patients required a sedative (midazolam). No further anesthesiologic procedures were necessary. Nausea was observed in one patient as a possible side-effect of tilidin. To confirm these preliminary results, a prospective randomized study is currently conducted.