Blood Pressure Guidelines for Children

Blood Pressure Measurement

The American Academy of Pediatrics recommends ambulatory blood pressure monitoring (ABPM) as the gold standard for assessing blood pressure patterns during sleep in children 2, 3
For accurate measurement in young children, appropriate cuff size is crucial - the bladder should encircle 80-100% of the limb circumference 1
Monitors should be applied to the non-dominant arm unless contraindicated 4, 5
When measuring blood pressure during sleep, devices should be programmed to record BP every 20 to 30 minutes 4, 5

The normal resting blood pressure while asleep and in the supine position for a 5-year-old child is approximately 98-99 mmHg systolic and 56 mmHg diastolic (50th percentile values) 1
The 50th percentile for nighttime systolic blood pressure in young children is 98-99 mmHg 1
The 50th percentile for nighttime diastolic blood pressure in young children is 56 mmHg 1
The 95th percentile (upper limit of normal) for nighttime systolic blood pressure is 112-113 mmHg 1
The 95th percentile for nighttime diastolic blood pressure is 66 mmHg 1

Blood pressure naturally decreases during sleep compared to daytime values, a phenomenon known as "dipping" 3, 6

Reference values for ambulatory blood pressure in children are primarily based on European populations, which may limit generalizability to other ethnic groups 2, 3
There is a critical need for expanded normative data for pediatric ABPM, particularly for ambulatory diastolic blood pressure values 2, 3
Understanding normal sleep blood pressure values is important for accurate diagnosis of hypertension in children 2, 3