[Reference values of arterial pressure depending on age, assessed by 24-hour ambulatory monitoring].
24-hour blood pressure monitoring has been ever more widely used in children. However, percentile ranks for healthy children have not been prepared yet. The aim of the study was to define percentile ranks of blood pressure measured by ambulatory blood pressure monitoring in healthy children aged 7-17 years depending on sex in children from the Province of Podlasie. The examinations were carried out in a group of 540 children: group I-girls--265, group II boys--275, who were divided into subgroups according to age. Blood pressure was measured by ambulatory blood pressure monitors: BR-102 f. Schiller, Poland LTD and Quiet Tycos, USA according to the principles in force. The results showed that mean systolic blood pressure (RRs) increased with age from 103.2 to 117.7 mm Hg in girls and from 98.8 to 125.6 mm Hg in boys. The differences were statistically significant (p > 0.05). Diastolic blood pressure (RRr) increased less (p > 0.05). Mean systolic blood pressure at night was 9-10% and diastolic pressure 10-11% lower, irrespective of sex. The range of normal blood pressure values (5-95 centile) was established. In group I in the youngest girls the range of RRs was 89-110 mmHg, that of RRr was from 51 to 75 mm Hg while in group II in the youngest boys RRs range was from 95 to 108 mm Hg and RRr--from 52 to 73 mm Hg. In group I and II in the oldest girls and boys the values were higher. The percentile ranks (5-95) were prepared for systolic and diastolic blood pressure based on blood pressure monitoring during 24-hours and separately during activity (day) and resting time (night).


CONCLUSIONS
1. Systolic blood pressure in children aged 7-17 years increases with age more than diastolic blood pressure. 2. Percentile ranks for healthy children aged 7-17 years depending on age, sex and daily time period were established.
I Klinika Chorób Dzieci Akademii Medycznej w Białymstoku.
Anna
A
Wasilewska
Walentyna Maria
WM
Zoch-Zwierz
Barbara
B
Tomaszewska
Ryszard
R
Wierciński
Anna
A
Biernacka
Tadeusz
T
Porowski
D000293:Adolescent; D000367:Age Factors; D001794:Blood Pressure / Q000502:physiology*; D018660:Blood Pressure Monitoring, Ambulatory / Q000295:instrumentation*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D012016:Reference Values