nephrostomy
Pronunciation: neh-FROS-tuh-me
A surgical procedure creating an opening between the kidney and skin surface for urine drainage.
Full Definition
Nephrostomy is a procedure where a catheter is placed through the skin directly into the renal pelvis to drain urine externally. In pediatric patients, this intervention is typically used for severe hydronephrosis, obstructive uropathy, or as a temporizing measure before definitive surgical repair. The procedure can be performed percutaneously under imaging guidance or surgically during open procedures. Pediatric nephrostomies require careful monitoring for complications including infection, tube displacement, and electrolyte imbalances due to urinary losses.
Usage
Usage note: Distinguish from pyelostomy, which specifically refers to opening the renal pelvis.
In Context
- "Emergency nephrostomy was performed to relieve the child's severe hydronephrosis." — operative note
- "The nephrostomy tube output decreased significantly after the ureteral stent placement." — progress note