Paeds · cardiology
Hypertension in children
Also known as Paediatric hypertension · High blood pressure in children · Childhood hypertension · Elevated blood pressure in children · Secondary hypertension in children · Ambulatory blood pressure monitoring in children
Fellowship guide to hypertension in children: the AAP 2017 definition based on age, sex and height percentiles, the rule that elevated office blood pressure must be confirmed by ambulatory monitoring before a label is fixed, the search for a secondary cause (renal, renovascular, endocrine, coarctation) in any young or stage 2 child, and the threshold — left ventricular hypertrophy — at which drug therapy becomes mandatory.
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- A child with a single elevated blood pressure reading does not have hypertension — the diagnosis requires three separate elevated office measurements on three occasions, or confirmation by ambulatory blood pressure monitoring. Premature labelling causes anxiety, over-investigation and insurability harm.
- Stage 2 hypertension (blood pressure at least 12 mmHg above the 95th percentile, or 140/90 or above) on a single visit in a symptomatic child is a medical emergency — refer the same day for evaluation and treatment, do not wait for confirmation.
- Hypertension in a child under six years, or stage 2 at any age, is secondary until proven otherwise — the leading cause is renal parenchymal or renovascular disease, and every such child needs urinalysis, renal function tests and renal ultrasound.
- Always measure four-limb blood pressures in any hypertensive child: an arm-to-leg systolic gradient above 20 mmHg with weak or delayed femoral pulses is coarctation of the aorta, a curable cause that is missed if only arm pressure is measured.
- Headache, visual disturbance, facial palsy or seizures in a hypertensive child signal hypertensive encephalopathy — this is a threshold for controlled intravenous antihypertensive therapy and paediatric intensive care, not oral agents.
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- Hypertension in children
- Measurement and screening of blood pressure
- Secondary hypertension: renal and renovascular causes
- Ambulatory blood pressure monitoring
- Elevated blood pressure at a health check
- Hypertensive emergency
- Short case: four-limb blood pressure and coarctation exclusion
- Long case: adolescent with primary hypertension and obesity
- Hypertension
- Cardiovascular assessment
- Childhood hypertension and its causes
- Blood pressure measurement and interpretation
- Cardiovascular examination: blood pressure and pulses
- Screening and management of high blood pressure
- Patient Care: cardiovascular conditions
- Medical Expert: hypertension in children
The organising idea of this topic is that childhood hypertension is a diagnosis of confirmation, stratification and trigger, not of a single cuff reading. The American Academy of Pediatrics 2017 guideline reframed the field: it dropped the term prehypertension, introduced an elevated category, lowered the drug-treatment threshold, and made ambulatory monitoring the standard for confirmation. [1] Every step of the clinical pathway flows from that framework — measure, confirm, search for a cause, look for target-organ damage, and treat to a target. [7]
This page covers the measurement technique, percentile-based classification, primary-versus-secondary split, work-up for target-organ damage, the lifestyle and pharmacological management, and the regional differences between the AAP and European Society of Hypertension approaches. It links to coarctation and chronic kidney disease leaves for the curable secondary causes that every candidate must be able to name. [3] [8]
Overview & Definition
Blood pressure in children is a continuous variable that rises with age, body size and pubertal maturation, so a reading that is normal for a tall sixteen-year-old is hypertensive for a small six-year-old. The definition is therefore percentile-based, anchored to normative data from healthy children. The 2017 AAP clinical practice guideline defines normal blood pressure as below the 90th percentile for age, sex and height (or below 120/80 mmHg for adolescents aged 13 years and older), elevated blood pressure as the 90th to below the 95th percentile (or 120/80 to below the blood-pressure-based threshold for adolescents), stage 1 hypertension as the 95th percentile to below the 95th percentile plus 12 mmHg, and stage 2 hypertension as at or above the 95th percentile plus 12 mmHg. [1]
The practical corollary is that no child is labelled hypertensive on the basis of one reading. The diagnosis of office hypertension requires elevated or stage 1 readings on three separate occasions, or confirmation by 24-hour ambulatory blood pressure monitoring. A child with stage 2 readings is referred promptly and evaluated rather than watched. This rule protects children from the consequences of mislabelling — anxiety, restricted activity, insurance and employment effects — while ensuring that genuine disease is not missed. [1] [9]
References12ShowHide
- [1]Flynn JT; Kaelber DC; Baker-Smith CM; et al Clinical Practice Guideline for Screening and Management of High Blood Pressure in Children and Adolescents. Pediatrics, 2017.PMID 28827377
- [2]National High Blood Pressure Education Program Working Group on High Blood Pressure in Children and Adolescents The fourth report on the diagnosis, evaluation, and treatment of high blood pressure in children and adolescents. Pediatrics, 2004.PMID 15286277
- [3]Lurbe E; Agabiti-Rosei E; Cruickshank JK; et al 2016 European Society of Hypertension guidelines for the management of high blood pressure in children and adolescents. J Hypertens, 2016.PMID 27467768
- [4]Hansen ML; Gunn PW; Kaelber DC Underdiagnosis of hypertension in children and adolescents. JAMA, 2007.PMID 17712071
- [5]Kollias A; Dafni M; Poulidakis E; et al Out-of-office blood pressure and target organ damage in children and adolescents: a systematic review and meta-analysis. J Hypertens, 2014.PMID 25304469
- [6]Mitsnefes MM; Laskin BL; Dahhou M; et al Mortality risk among children initially treated with dialysis for end-stage kidney disease, 1990-2010. JAMA, 2013.PMID 23645144
- [7]Lurbe E; Litwin M; Pall D; et al Insights and implications of new blood pressure guidelines in children and adolescents. J Hypertens, 2018.PMID 29677052
- [8]Flynn JT; Kruger R; Brady TM; et al Practical approach to evaluate and manage hypertension in youth: an International Society of Hypertension position paper. J Hypertens, 2026.PMID 41674374
- [9]Lurbe E; Mancia G; Calpe J; et al Joint statement for assessing and managing high blood pressure in children and adolescents: Chapter 1. How to correctly measure blood pressure in children and adolescents. Front Pediatr, 2023.PMID 37138561
- [10]Hooper SR; Johnson RJ; Gerson AC; et al Overview of the findings and advances in the neurocognitive and psychosocial functioning of mild to moderate pediatric CKD: perspectives from the Chronic Kidney Disease in Children (CKiD) cohort study. Pediatr Nephrol, 2022.PMID 34110493
- [11]Miyashita Y; Peterson D; Rees JM; et al Isradipine for treatment of acute hypertension in hospitalized children and adolescents. J Clin Hypertens (Greenwich), 2010.PMID 21054771
- [12]Flynn JT Neonatal hypertension. J Med Liban, 2010.PMID 21462844