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Determinants of inappropriate circadian blood pressure variability in children with essential hypertension

Lukasz J Krzych1, Leslaw Szydlowski

  • 1Department of Pediatric Cardiology, Medical University of Silesia, Katowice, Poland. l.krzych@wp.pl

The Canadian Journal of Cardiology
|January 17, 2009
PubMed

Insights

Hypertensive children with an inappropriate daily blood pressure profile, known as nondippers, exhibit more severe hypertension. Male sex is a risk factor for this condition, necessitating further research into its determinants.

Area of Science:

  • Pediatric Cardiology
  • Hypertension Research
  • Circadian Rhythms

Background:

  • Inappropriate daily blood pressure (BP) profiles in hypertension worsen clinical outcomes and increase cardiovascular risk.
  • Early intervention in pediatric hypertension is crucial to prevent complications like left ventricular hypertrophy and hypertensive retinopathy.

Purpose of the Study:

  • To evaluate the circadian BP profile in hypertensive children.
  • To identify determinants of inappropriate daily BP variability in this population.

Main Methods:

  • Retrospective study of 106 children (6-18 years) with essential hypertension.
  • Categorization into 'nondippers' (inappropriate BP variability) and 'dippers' (appropriate BP variability).

Main Results:

  • Nondippers showed significantly higher nighttime systolic and diastolic BP and BP load compared to dippers.
  • Male sex was associated with a 2.5-fold increased risk of nondipping, though not statistically significant.
  • No significant differences were found in anthropometric, familial, biochemical, or birth weight parameters between groups.

Conclusions:

  • Nondippers among hypertensive children present with a more severe hypertensive state.
  • Male sex is identified as a risk factor for nondipping in pediatric hypertension.
  • Further clinical investigations are required to precisely determine the factors contributing to nondipping.
Abstract

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