[Anesthesia in percutaneous extraction of concretions from the kidney].
The authors discuss the problem of the most suitable anaesthesia for percutaneous extraction of renal concrements. Based on 203 anaesthesias, they compare the combination of local anaesthesia with intravenous administration of ketamine with a tranquilizer, local anaesthesia with administration of phentanyl and a tranquillizer and local anesthesia with phentanyl and a analgetic-spasmolytic mixture. In the great majority of patients they prefer a combination of local anaesthesia and continuous administration of phentanyl and fractionated administration of an analgetic-spasmolytic mixture.