Ambulatory blood pressure monitoring in children with primary and renal parenchymal hypertension
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Katedra i Klinika Pediatrii i Nefrologii, Warszawski Uniwersytet Medyczny
Piotr Skrzypczyk
Katedra i Klinika Pediatrii i Nefrologii, Warszawski Uniwersytet Medyczny, ul. Marszałkowska 24, 00-576 Warszawa
Med Og Nauk Zdr. 2013;19(1):49–54
Introduction. Ambulatory blood pressure monitoring (ABPM) detects blood pressure disturbances more sensitively compared to casual blood pressure (BP) measurements. Assessment of differences in ABPM results in children with primary hypertension (PH) and renal parenchymal hypertension (RH).

Material and Methods:
Study group consisted of 64 untreated children aged from 6.2 to 18.0 mean 14.2±3.3 years with PH (n=31) and RH (n=33) secondary to: nephropathy due to renal scarring (n=21), glomerulopathies (n=4), cystic kidney diseases (n=4), other (n=4). Following parameters were evaluated: age of recognition of AH, BMI Z-score, biochemical parameters, GFR ac. to Schwartz [mL/min/1,73m2], ABPM: during 24h, activity (a) and resting (r) period mean systolic (SBP) and diastolic BP (DBP) [mm Hg], load (SBPL/24h, SBPL/a, SBPL/r, DBPL/24h, DBPL/a, DSBPL/r) [%], pulse pressure (PP/24h, PP/a, PP/r) [mm Hg], nocturnal BP dip (DIP SBP, DIP DBP) [%], variability (SD SBP, SD DBP), ambulatory arterial stiffness index (AASI).

Patients with PH were significantly older, had higher BMI Z-score, GFR (p<0.05), lower LDBP/r (p=0.05) and higher PP/24h and PP/a (p<0.05) vs. patients with RH. In group with PH trend toward higher DIP SBP (p=0.08) and DIP DBP (p=0.06) values was found. No differences in SD SBP, SD DBP and AASI between the groups were found. In whole group of 64 children PP/24h, PP/a and PP/r correlated with age (r=0.40; r=0.41; r=0.33, p<0.01), BMI Z-score (r=0.30; r=0.28; r=0.35, p<0.05) and HDL cholesterol (r=–0.40; r=–0.38; r=–0.44, p<0.05), AASI correlated with BMI Z-score (r=0.27, p<0.05), HDL cholesterol (r=–0.35, p<0.05), DIP SBP (r=–0.29, p<0.05) and DIP DBP (r=-0.45, p<0.0001).

1) Children with arterial hypertension secondary to renal diseases may be characterized by high diastolic blood pressure load during resting period and low nocturnal blood pressure dip. 2) In children with arterial hypertension arterial stiffness is related to body mass index and lipid disturbances

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