Correlation of blood pressure readings from 6-hour intervals with the daytime period of 24-hour ambulatory blood pressure monitoring in pediatric patients.
Shorter-interval (6-hour) ambulatory blood pressure monitoring (ABPM) has been shown to correlate well with 24-hour ABPM in adults, but this has not been studied in children. The authors selected 131 patients aged 9 to 18 who underwent 24-ABPM from 2000-2008. Six-hour intervals beginning at different start times were compared with the daytime and 24-hour period, with subset analysis for normotensive and hypertensive patients. Concordance correlation coefficients (CCCs) were used to assess for agreement. Among normotensive patients, the mean difference between daytime and 6-hour intervals ranged from -0.1 mm Hg to 0.0 mm Hg for diastolic blood pressure (DBP) and -1.1 mm Hg to 0.6 mm Hg for systolic blood pressure (SBP) with CCCs of 0.88 to 0.93 for DBP and 0.93 to 0.96 for SBP. For hypertensive patients, mean difference ranged from -0.6 to 1.3 mm Hg for DBP and -0.8 to 1.1 mm Hg for SBP with CCCs of 0.89 to 0.98 for DBP and 0.86 to 0.95 for SBP. Shorter-interval monitoring correlates significantly with full daytime monitoring in children, allowing for assessment of blood pressure with improved convenience.
Department of Pediatrics, Biomedical Statistics & Informatics, Division Pediatric Nephrology; Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. kingschultz.leslie@mayo.edu
Leslie
L
King-Schultz
Amy L
AL
Weaver
Carl H
CH
Cramer
D000293:Adolescent; D000367:Age Factors; D001794:Blood Pressure; D018660:Blood Pressure Monitoring, Ambulatory / Q000295:instrumentation / Q000379:methods*; D002648:Child; D002669:Child Welfare; D002940:Circadian Rhythm; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D006973:Hypertension / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology; D008297:Male; D010372:Pediatrics; D012189:Retrospective Studies; D013997:Time Factors; D014481:United States / Q000453:epidemiology