Related Experiment Videos
Predicting first-year relapses in children with nephrotic syndrome
A R Constantinescu1, H B Shah, E F Foote
1Department of Pediatrics, Division of Pediatric Nephrology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, New Brunswick, NJ, USA. constaar@umdnj.edu
Pediatrics
|March 4, 2000
Summary
Predicting nephrotic syndrome relapses in children is crucial. Rapid steroid remission and absence of hematuria at initial presentation indicate a lower likelihood of infrequent relapses (IRs).
Area of Science:
- Pediatric Nephrology
- Clinical Research
- Disease Prognosis
Background:
- Nephrotic syndrome frequently recurs in children, with relapse patterns categorized as infrequent (IR), frequent (FR), or steroid-dependent (SD).
- Understanding predictive factors for relapse patterns is essential for effective management and long-term patient outcomes.
- Initial histopathology is often deferred, necessitating prediction based on clinical presentation.
Purpose of the Study:
- To identify clinical factors at initial presentation that predict relapse patterns in the first year of childhood nephrotic syndrome.
- To differentiate between infrequent relapses (IR), frequent relapses (FR), and steroid-dependent (SD) courses without relying on renal biopsy findings.
Main Methods:
- Retrospective analysis of medical records of pediatric nephrotic syndrome patients followed for at least one year.
- Key variables analyzed included age, sex, race, presence of hematuria, and time to remission.
- Statistical analysis focused on identifying predictors of IR, FR, and SD relapse patterns.
Main Results:
- Of 56 analyzed patients, 41.1% had IR, 16.1% had FR, and 42.9% had SD.
- Independent variables like age, sex, race, and initial hematuria were not significant predictors of first-year relapse patterns.
- A significant finding emerged: children achieving remission within one week of steroid therapy and without hematuria were more likely to have an IR course (Sensitivity: 67%, Specificity: 89%, PPV: 94%).
Conclusions:
- The rapidity of initial steroid response, particularly achieving remission within a week, is a key predictor of relapse patterns.
- The absence of hematuria, when combined with a rapid initial response, strongly suggests an infrequent relapse course.
- Documenting these presenting features is vital for predicting future relapse frequency in pediatric nephrotic syndrome.