PS 06-17 BLOOD PRESSURE PERCENTILES BY AGE AND HEIGHT IN 15,049 PORTUGUESE CHILDREN AND ADOLESCENTS PORTUGUESE

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Abstract

Objective:

To present oscillometric blood pressure (BP) references in Portuguese children and adolescents Portuguese, and compare them with the available reference tables.

Design and Method:

Data were collected from 15,049 healthy Portuguese children and adolescents (27% female), mean age 13.02 ± 2.05 years (range: 5–17 years) and body mass index (BMI) 19.22 ± 3.60 kg/m2. Three measures of BP and heart rate (HR) were obtained under standard conditions over the brachial artery with a clinically validated automatic sphygmomanometer (OMRON 705IT). Gender-specific percentiles for systolic (SBP) and diastolic (DBP) BP, accounting for age and height, were obtained and compared with the US references (Fourth Report).

Results:

Gender-specific percentile tables, accounting for age and height, were obtained for the total sample. At median height, the 95th percentiles of SBP were higher in the portuguese sample compared to the US reference values (Fourth Report), particularly for ages up to 16 years, with age-specific differences ranging from 1 mmHg to 7 mmHg in girls and from -1 mmHg to 8 mmHg in boys (figure 1). Curiously, the gender-specific DBP 95th percentiles were lower in the Portuguese population, especially for ages above 10 years (Figure 1).

Conclusions:

The availability of national reference tables for BP in children and adolescents is necessary, as they would allow a better definition of the adequate preventive strategies for these particular populations. The differences found in the Portuguese percentiles compared to US reference values reinforce the need to adjust the reference tables to different pediatric specificities.

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