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Diuresis renography. The need for an additional view after gravity-assisted drainage
M A Rossleigh1, D M Leighton, R H Farnsworth
1Department of Nuclear Medicine, Prince of Wales Hospital, Randwick, Australia.
Clinical Nuclear Medicine
|March 1, 1993
Summary
Diuresis renography (DR) can be problematic after pyeloplasty. Adding a gravity-assisted drainage (GAD) view improves obstruction assessment in pediatric patients, especially post-surgery.
Area of Science:
- Pediatric Urology
- Nuclear Medicine
- Surgical Outcomes
Background:
- Diuresis renography (DR) is standard for evaluating pelvi-ureteric junction obstruction.
- Post-pyeloplasty patients present challenges due to gravity-assisted drainage (GAD).
Purpose of the Study:
- To assess the utility of adding a GAD view to standard DR.
- To improve the accuracy of obstruction evaluation in children post-pyeloplasty.
Main Methods:
- Review of 23 radionuclide studies in 21 children.
- Standard DR followed by an additional GAD view was performed.
- Comparison of obstruction findings between DR and DR with GAD.
Main Results:
- In pre-operative patients, 5/12 showed obstruction on both DR and GAD.
- In post-pyeloplasty patients, 5/11 were obstructed on DR but not GAD.
- GAD views clarified equivocal DR results in several cases.
Conclusions:
- DR should be supplemented with a GAD view for pediatric patients.
- This combined approach enhances the evaluation of pelvi-ureteric junction obstruction, particularly after pyeloplasty.