Blood Pressure Percentile Formula:
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Definition: This calculator determines a child's blood pressure percentile based on age, height, and blood pressure measurement according to Baylor College of Medicine tables.
Purpose: It helps pediatric healthcare providers assess whether a child's blood pressure is normal for their age and height.
The calculator uses Baylor reference tables to determine:
Where:
Explanation: The calculator compares the measured blood pressure against normative data for children of the same age and height.
Details: Pediatric blood pressure assessment requires consideration of growth parameters, as normal ranges vary significantly with age and height.
Tips: Enter the child's exact age in years, measured height in cm, and current blood pressure measurement. All values must be within reasonable ranges.
Q1: Why use percentiles instead of absolute numbers for children?
A: Children's blood pressure norms vary by age, sex, and height, making percentiles more accurate than fixed thresholds.
Q2: What percentile is considered high blood pressure?
A: Generally ≥90th percentile is elevated, ≥95th is hypertensive, but clinical context matters.
Q3: How often should children's blood pressure be checked?
A: Annually for all children age 3+, or more frequently if risk factors exist.
Q4: Does this calculator account for sex differences?
A: Yes, the Baylor tables include separate norms for boys and girls.
Q5: What if my child is above the 99th percentile?
A: Consult a pediatrician immediately for evaluation of possible hypertension.