The diagnosis of hyper- and hypotonia in childhood is not based on fixed cut-off values but on the age and height related blood pressure percentiles.
Blood pressure percentiles according to: 4th Report on Hypertension in Children an Adolescents by the AHA. 24h percentiles according to: Oscillometric twenty-four-hour ambulatory blood pressure values in healthy children and adolescents: A multicenter trial including 1141 subjects, The Journal of Pediatrics Volume 130, Issue 2 , Pages 178-184, February 1997.
Percentiles of height (stature) are according to Centers for Disease Control and Prevention, National Center for Health Statistics. CDC growth charts: United States. http://www.cdc.gov/growthcharts/. May 30, 2000
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