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Risk factors for hypertension 3 years after renal transplantation in children

Samantha S Nagasako1, Paulo C Koch Nogueira, Paula G P Machado

  • 1Pediatrics Department - UNIFESP - Escola Paulista de Medicina and Hospital do Rim e Hipertensão, São Paulo, Brazil.

Pediatric Nephrology (Berlin, Germany)
|May 31, 2007
PubMed

Insights

Pediatric renal transplant patients with prior hypertension and lower early graft function face higher risks of developing arterial hypertension long-term. Early graft function is crucial for managing hypertension post-transplant.

Area of Science:

  • Nephrology
  • Pediatric Transplantation
  • Cardiovascular Health

Background:

  • Arterial hypertension is a significant complication following pediatric renal transplantation.
  • Identifying risk factors is crucial for proactive management and improving long-term outcomes.
  • Previous hypertension and early graft function are potential contributors to post-transplant hypertension.

Purpose of the Study:

  • To identify risk factors for medium-term arterial hypertension in pediatric renal transplant recipients.
  • To analyze the association between pre-transplant conditions and post-transplant hypertension.
  • To evaluate the impact of early graft function on the development of hypertension.

Main Methods:

  • A case-control study was conducted on pediatric renal transplant patients (1998-2003).
  • Patients were classified as hypertensive or control at 3 years post-transplant.
  • Risk factors analyzed included pre-transplant hypertension, glomerular filtration rate (GFR), rejection episodes, medication doses, body mass index (BMI), and original renal disease.

Main Results:

  • Univariate analysis identified pre-transplant hypertension (p < 0.001), glomerulopathies (p = 0.001), and lower GFR at 6 months post-transplant (p = 0.003) as significant risk factors.
  • Multivariate analysis confirmed pre-transplant hypertension and early GFR as major risk factors.
  • A trend towards significance was noted for BMI at 1 year post-transplant (p = 0.072).

Conclusions:

  • Pre-transplant hypertension is a primary predictor of medium-term arterial hypertension in pediatric renal transplant recipients.
  • Early graft function, assessed by GFR at 6 months, is a critical factor in preventing post-transplant hypertension.
  • These findings underscore the importance of managing pre-existing hypertension and optimizing early graft function.

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