[Blood pressure 24-hour rhythms and variability in adolescents with hypertension]. / Osobennosti sutochnykh ritmov arterial'nogo davleniia i ego variabel'nosti u podrostkov s arterial'noi gipertenziei.

Twenty-four hour blood pressure (BP) monitoring was used for the study of BP 24-hour rhythms and variability in adolescents with hypertension and their normotensive counterparts. The data obtained evidenced for active participation of sympatho-adrenal system in genesis of juvenile hypertension: hypertension was predominantly systolic, BP elevation as a rule was associated with increased heart rate and pulse pressure. Episodes of BP elevation were registered mostly during day time. Desynchronization of 24-hour rhythms due to pronounced BP lowering during sleep characteristic for this age group found its reflection in values of nocturnal BP dipping. More than 1/3 of adolescents with episodes of elevated BP had 'white coat' hypertension.

[Peculiarities of blood pressure rhythms and blood pressure variability in adolescents with hypertension (in accordance with twenty-four monitoring of blood pressure)]. / Osobennosti sutochnykh ritmov arterial'nogo davleniia i ego variabel'nosti u podrostkov s arterial'noi gipertenziei (po dannym sutochnogo monitorirovaniia AD).

Registration of 24-hour blood pressure in adolescents with and without hypertension revealed active participation of sympathetic nervous system in genesis of juvenile hypertension. Hypertension in adolescents was mainly systolic, blood pressure elevation as a rule was accompanied by accelerated heart rate and increased pulse pressure. Episodes of blood pressure elevations occurred mostly during day time. Desynchronization of 24-hour rhythms due to excessive nocturnal blood pressure lowering was found to be typical for this age group. More than two thirds of adolescents with episodes of blood pressure elevation had also 'white coat hypertension'.