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Computed tomographic evaluation and guided correction of malpositioned nephrostomy catheters
1Department of Radiology, University of California Medical Center, Davis, Ambulatory Care Center, 4860 Y Street, Suite 3100, Sacramento, CA 95817, USA.
Abdominal Imaging
|July 3, 1999
Summary
Computed tomography (CT) effectively detects and corrects malpositioned nephrostomy catheters after contrast spillage during nephrostograms. This imaging technique aids in guiding catheter repositioning into the renal collecting system, improving patient outcomes.
Area of Science:
- Radiology
- Interventional Nephrology
- Medical Imaging
Background:
- Nephrostomy tube placement is crucial for urinary drainage.
- Malpositioned catheters can lead to complications.
- Contrast spillage during nephrostograms indicates potential catheter displacement.
Purpose of the Study:
- To evaluate the diagnostic and therapeutic utility of computed tomography (CT).
- To assess CT's role in detecting and correcting malpositioned nephrostomy catheters.
- To analyze CT-guided interventions following contrast spillage during nephrostograms.
Main Methods:
- CT scans were performed on nine patients with abnormal nephrostograms.
- CT was utilized to identify the exact position of nephrostomy catheters.
- CT guidance was employed for repositioning catheters into the renal collecting system.
Main Results:
- CT successfully detected malpositioned catheters in all nine cases.
- CT-guided repositioning was effective in seven out of nine patients.
- One case required surgical intervention for an intraperitoneal catheter; another needed fluoroscopic guidance.
Conclusions:
- Computed tomography is a valuable tool for identifying misplaced nephrostomy tubes.
- CT facilitates successful repositioning of nephrostomy catheters within the renal collecting system.
- CT enhances the management of complications arising from nephrostomy tube placement.