[Percutaneous drainage nephrostomy guided by ultrasound. Apropos of 80 adult cases].

The carrying out of an ultrasound percutaneous nephrostomy requires the combined use of several technics: local anesthesia; ultrasound transducer-fixed puncture probe insertion; angiographic method; route dilatation. A study of a series of 80 DUPN operations carried out in patients with febrile upper urinary tract obstruction and/or acute failure, showed that this operation is simple and rapid (lasting 24 minutes on average). Failures occurred rarely (6.2%) and were most often related to insufficient dilatation of the renal cavities. Complications were limited: 1 case of hemorrhage, 1 case of urinoma, 4 cases of infection, no case of perforation of a neighboring organ. Incidents were more frequent and those were probe-related (9 dislodgments were required). Furthermore, the DUPN opens the way to many new diagnostic opportunities.