title: Is Daytime Systolic Load an Important Risk Factor for Target Organ Damage in Pediatric Hypertension?
abstract: The aim of this study was to compare ambulatory blood pressure (BP) monitoring (ABPM) data and determine which hypertension type is a risk factor in target organ damage. A total of 82 children (47 boys) with suspected hypertension based on office BP measurements and considered hypertensive by ABPM were studied. Target organ damage included the following: 35.3% hypertensive retinopathy, 25.6% microalbuminuria, 15.8% increased left ventricular mass index, 29.2% increased carotid intima-media thickness (cIMT), 24.3% high augmentation index (AIx), and 19.5% high pulse wave velocity (PWV). The association between BP load, PWV, and cIMT was statistically significant. There were significant correlations between daytime systolic BP load, PWV, AIx, and cIMT. A statistically significant difference was also detected between nighttime systolic BP load, PWV, and cIMT values and nighttime diastolic BP load levels and values of AIx and cIMT. There was also a statistically significant difference between the high level of nighttime diastolic BP load and cIMT. The authors found that target organ damage was seen more often in children with primary hypertension who had systolic loads.
authors.affiliation: Department of Pediatric Nephrology, Ege University Medical Faculty, Izmir, Turkey.
authors.forename: Seçil
authors.initials: S
authors.lastname: Conkar
authors.affiliation: Dr. Behcet Uz Children Diseases Teaching and Research Hospital Pediatric Nephrology, Izmir, Turkey.
authors.forename: Ebru
authors.initials: E
authors.lastname: Yılmaz
authors.affiliation: Department of Pediatric Nephrology, Ege University Medical Faculty, Izmir, Turkey.
authors.forename: Şükriye
authors.initials: Ş
authors.lastname: Hacıkara
authors.affiliation: Department of Pediatric Cardiology, Ege University Medical Faculty, Izmir, Turkey.
authors.forename: Sibel
authors.initials: S
authors.lastname: Bozabalı
authors.affiliation: Department of Pediatric Nephrology, Ege University Medical Faculty, Izmir, Turkey.
authors.forename: Sevgi
authors.initials: S
authors.lastname: Mir
mesh_terms: D000293:Adolescent; D000419:Albuminuria / Q000503:physiopathology; D018660:Blood Pressure Monitoring, Ambulatory / Q000379:methods*; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D059168:Carotid Intima-Media Thickness; D002648:Child; D002940:Circadian Rhythm; D003430:Cross-Sectional Studies; D000075222:Essential Hypertension; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D058437:Hypertensive Retinopathy / Q000175:diagnosis / Q000503:physiopathology; D017379:Hypertrophy, Left Ventricular / Q000000981:diagnostic imaging / Q000503:physiopathology; D008297:Male; D011446:Prospective Studies; D063177:Pulse Wave Analysis; D012307:Risk Factors; D013599:Systole / Q000502:physiology