Related Experiment Video
Updated: Dec 8, 2025

An Immature Murine Model of Reversible Unilateral Ureteral Obstruction
Published on: April 4, 2025
[PROTEINURIA IN PATIENTS WITH ACUTE URINARY TRACT OBSTRUCTION].
Dvorah Sara Shapiro1, Irina Alexandrovich1, Nurit Algur2
1Department of Geriatrics, Shaare Zedek Medical Center, Jerusalem, Israel.
Urinary tract obstructions (UTO) cause significant proteinuria in hospitalized patients. This proteinuria does not resolve early after obstruction relief, suggesting potential long-term implications.
Area of Science:
- Nephrology
- Urology
- Internal Medicine
Background:
- Urinary tract obstructions (UTO) are known to cause tubular injury.
- The potential for UTO to induce transient proteinuria requires further investigation.
Purpose of the Study:
- To compare proteinuria incidence and severity in patients with UTO versus catheterized controls.
- To assess early resolution of proteinuria after UTO relief.
Main Methods:
- Prospective, matched case-control study of 100 patients (50 UTO, 50 controls).
- Quantified proteinuria using consecutive 24-hour urine collections.
- Compared incidence, severity, and quantitative changes between groups.
Main Results:
- All patients with UTO and 94% of controls exhibited abnormal proteinuria.
- No significant difference in proteinuria degree or changes during hospitalization between groups.
- Proteinuria did not significantly change within a week of follow-up in either group.
Conclusions:
- High incidence of significant proteinuria observed in hospitalized patients, with or without UTO.
- Early post-relief proteinuria in UTO patients does not resolve.
- Longer follow-up is necessary to determine long-term resolution and prognostic significance of proteinuria.
Related Concept Videos
Acute Kidney Injury II: Pathophysiology
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations
Urinary Tract Calculi V: Nursing Management
Acute Kidney Injury IV: Diagnostic Studies and Prevention
Urinary Tract Calculi III: Medical Management
Acute Pyelonephritis I: Introduction

