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Renin-stimulating test in children.

M Uchiyama, T Otsuka, Y Shibuya

    Experimental and Clinical Endocrinology
    |December 1, 1985
    PubMed
    Summary
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    This study evaluated renin-stimulating tests for children with labile hypertension. Standing or frusemide administration effectively stimulated plasma renin activity (PRA) in pediatric patients.

    Area of Science:

    • Pediatric Nephrology
    • Endocrinology
    • Hypertension Research

    Background:

    • Labile hypertension in children requires accurate diagnostic tools.
    • Plasma renin activity (PRA) is a key indicator of the renin-angiotensin-aldosterone system.
    • Evaluating renin-stimulating tests is crucial for pediatric hypertension management.

    Purpose of the Study:

    • To assess the efficacy of various stimuli in evaluating plasma renin activity (PRA).
    • To identify the most appropriate renin-stimulating test for children with labile hypertension.
    • To screen for suppressed PRA in pediatric patients aged 10-14 years.

    Main Methods:

    • Sixty children (aged 10-14) with labile hypertension participated.
    • Plasma renin activity (PRA) was measured under different conditions: supine, standing (15 or 60 min), frusemide administration, and hand dynamometer grip.

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  • Statistical analysis was performed to compare PRA levels across various stimuli.

    • Main Results:

    • Significant differences in PRA were observed between supine measurements and those after standing or frusemide administration (P < 0.001).
    • No significant difference in PRA was found between standing and frusemide administration.
    • Hand dynamometer grip did not alter PRA levels.
    • No subjects exhibited suppressed PRA.

    Conclusions:

    • Standing upright for 15 minutes or 90 minutes of supine rest post-frusemide are practical and effective renin-stimulating tests for children.
    • These methods appear most suitable for childhood renin stimulation assessments.
    • No suppressed PRA was detected in the studied pediatric population.