Home blood pressure in children and adolescents: a comparison with office and ambulatory blood pressure measurements

Aim: To compare BP measurements of children and adolescents using different methods office BP (OBP), ambulatory BP monitoring (ABPM) and home BP measurement (HBPM) and to study their correlations. Method: Individuals were evaluated between 5 and 15 years of age who had been referred because of a previous high BP. OBP was measured with the OMRON-705CP. Three measurements were carried out at 5-min intervals. HBPM were taken using the same device, two measurements at 5-min intervals in the morning and in the evening during 7 days. ABPM was performed using the SpaceLabs 90207 monitors. Results: A total of 109 children and adolescents were evaluated (9.82 +/- 2.63 years), 52.3% boys, 56.9% non-white. The office systolic BP (SBP) was lower than in daytime ABPM (p < 0.001) but similar HBPM (p = 0.294), and the office diastolic BP (DBP) was lower than daytime ABPM (p < 0.001) and in HBPM (p = 0.035). The SBP and DBP at HBPM was lower than daytime ABPM (p < 0.001). Daytime ambulatory BP was more closely associated with home readings (SBP r = 0.731 and DBP r = 0.616) than with office's readings (SBP r = 0.653 and DBP r = 0.394). Conclusion: The BP of children and adolescents varies depending on the place and manner of measurement. ABPM presents better correlation with HBPM than with the office measurements.