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Nephrotic-range proteinuria is strongly associated with poor blood pressure control in pediatric chronic kidney

Amy J Kogon1, Christopher B Pierce2, Christopher Cox2

  • 1Columbia University Medical Center, New York, New York, USA.

Kidney International
|September 20, 2013
PubMed

Insights

Controlling blood pressure (BP) in children with chronic kidney disease (CKD) is crucial. Nephrotic-range proteinuria significantly hinders BP control and worsens outcomes in pediatric CKD patients.

Area of Science:

  • Pediatric Nephrology
  • Cardiovascular Health in Chronic Disease
  • Longitudinal Health Data Analysis

Background:

  • Blood pressure (BP) control is vital for managing chronic kidney disease (CKD) in children.
  • Limited longitudinal data exists on BP trends in pediatric CKD populations.
  • Understanding factors influencing BP is essential for effective treatment strategies.

Purpose of the Study:

  • To longitudinally analyze BP trends in a cohort of 578 children with CKD.
  • To identify factors associated with BP changes and achievement of controlled BP.
  • To investigate the impact of proteinuria and other variables on BP control.

Main Methods:

  • Longitudinal analysis of casual BP measurements in 578 pediatric CKD patients.
  • BP standardized for age, gender, and height.
  • Linear mixed-effects models and relative sub-hazards (RSH) used to analyze BP changes and control factors.

Main Results:

  • Factors like younger age, Black race, higher BMI, and proteinuria were linked to higher baseline BP.
  • Average BP decreased over time, but nephrotic-range proteinuria, increased BMI, and rising proteinuria levels predicted worsening BP.
  • Only 46% of hypertensive patients achieved controlled BP; nephrotic-range proteinuria, Black race, and low GFR (<40 ml/min) were associated with poor control.

Conclusions:

  • Nephrotic-range proteinuria is a primary factor associated with poor BP control and progression in pediatric CKD.
  • Targeting proteinuria reduction is critical for improving BP management and slowing CKD progression.
  • Further research should focus on interventions to decrease proteinuria in children with CKD.

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