MEDRADSC 3C03 Lecture Notes - Lecture 21: Urinary Retention, Nephrostomy, Renal Pelvis

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 3C03
• Professor: Sandra Charbonneau

Document Summary

Purpose of urinary intervention: relieve acute urinary obstruction, remove calculi, place ureteric stents, biopsy, remove foreign bodies. Percutaneous nephrostomy: accessing renal pelvis via needle/ catheter to drain system, most common urinary intervention. Indication: obstruction*, benign- ureteric stones, malignant - ca of bladder & prostate, ca of uterus, ovaries, colon, small bowel, breast, lymphoma, malignancies that can spread to peritoneum / omentum has potential to block and compress the ureter. Infected hydronephrosis: post-surgical damage to ureter, ureteral fistulas & retroperitoneal fibrosis. Infection kidney or bladder: meds for anxiety. Insert wire through needle, then dilators, then catheter: wire removed, catheter is sutured to the skin, bag attached to the catheter via extension tubing, posterior angle better angle better approach purple circle. Complications and risks (not frequent: hemorrhage or infection are the most common, catheter related: dislodgement/occlusions, perforation of the kidney, blood clots in the hilum of the kidney will resolve on their own due to endogenous urokinase.