[Blood pressure 24-hour rhythms and variability in adolescents with hypertension].
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.
Ol'binskaia
L I
LI
Morozova
T E
TE
Ladonkina
E V
EV
D000293:Adolescent; D002940:Circadian Rhythm / Q000502:physiology*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male