Blood Pressure Guidelines for Adolescents

Normal Blood Pressure Range

For adolescents ≥13 years of age, normal blood pressure is less than 120/80 mmHg 1
The 50th percentile for 14-year-old boys is approximately 118/73 mmHg 2, 3
The 50th percentile for 14-year-old girls is approximately 117/73 mmHg 2, 4

Elevated blood pressure is defined as 120 to 129 mmHg systolic AND less than 80 mmHg diastolic for adolescents ≥13 years 1
Stage 1 hypertension is defined as 130/80 mmHg to 139/89 mmHg (≥13 years) 1
Stage 2 hypertension is defined as ≥140/90 mmHg (≥13 years) 1

The American Heart Association provides reference values for 24-hour ambulatory blood pressure monitoring in 14-year-olds 4, 5
For 14-year-old boys, the 24-hour average is 118/68 mmHg (50th percentile) 5
For 14-year-old girls, the 24-hour average is 117/67 mmHg (50th percentile) 4

Blood pressure measurement should be performed using the appropriate size cuff with the child seated and relaxed 6
A diagnosis of hypertension requires elevated readings on three separate occasions 1, 7
The 2017 American Academy of Pediatrics guidelines aligned adolescent BP thresholds (≥13 years) with adult guidelines to simplify detection and management 1

Blood pressure should be measured at each routine visit for adolescents 6, 7
Children with elevated readings should have blood pressure confirmed on three separate days before diagnosing hypertension 6, 1
The goal of treatment is blood pressure <90th percentile for age, sex, and height or <130/80 mmHg in adolescents ≥13 years 7
Lifestyle modifications (diet, exercise, weight management) are first-line interventions for elevated blood pressure 7
Pharmacological treatment should be considered for confirmed hypertension that doesn't respond to lifestyle changes 7

The 50th percentile (median) value for 24-hour ambulatory monitoring in a 16-year-old male is approximately 123.4/68.6 mmHg, with the 75th percentile being 129.4/72.3 mmHg, the 90th percentile being 134.9/75.6 mmHg, and the 95th percentile being 138.2/76.2 mmHg 8
The 50th percentile for daytime blood pressure is 128.2/74.8 mmHg, with the 75th percentile being 134.6/77.8 mmHg, and the 90th percentile being 140.4/80.5 mmHg 8
The 50th percentile for nighttime blood pressure is 110.9/55.4 mmHg, with the 75th percentile being 116.9/59.3 mmHg, and the 90th percentile being 122.5/63.1 mmHg 8

Ambulatory blood pressure monitoring provides more comprehensive data and is considered the gold standard for confirming hypertension in adolescents, according to the American Heart Association 8, 9

White coat hypertension (elevated readings only in clinical settings) is common and should be ruled out using ambulatory monitoring, as recommended by the American Society of Hypertension 10
Blood pressure naturally varies throughout the day, with lower readings typically occurring during sleep, as observed in studies published in Hypertension 8, 9

The 75th percentile of 24-hour ambulatory blood pressure monitoring in 14-year-old boys is 122/71 mmHg, and the 90th percentile is 127/74 mmHg, according to the American Heart Association 11
The 95th percentile of 24-hour ambulatory blood pressure monitoring in 14-year-old boys is 130/76 mmHg, indicating a higher-than-optimal blood pressure value 11
Daytime blood pressure values for 14-year-old boys have a 50th percentile of 118/73 mmHg, a 75th percentile of 123/77 mmHg, and a 90th percentile of 127/80 mmHg, as reported by the American Heart Association 11
Nighttime blood pressure values for 14-year-old boys have a 50th percentile of 101/55 mmHg, a 75th percentile of 106/59 mmHg, and a 90th percentile of 111/63 mmHg, according to the American Heart Association 11

Height significantly affects blood pressure values, which is why height-specific percentiles are traditionally used, as noted by the American Heart Association 11

The American Heart Association recommends that patients be seated quietly for ≥5 minutes before measurement, with back supported, feet flat on floor, legs uncrossed, arm supported at heart level, and no caffeine, exercise, or smoking within 30 minutes 12

The American Academy of Pediatrics suggests that ambulatory blood pressure monitoring (ABPM) is the gold standard for confirming hypertension in adolescents, with reference values for 24-hour average, daytime average, and nighttime average available 12