title: [Blood pressure variability and left ventricular hypertrophy in arterial hypertension].
abstract: OBJECTIVE
  To evaluate the left ventricular hypertrophy correlation with blood pressure variability during day and night time as well as throughout the 24h period.
  
  
  METHODS
  Fifteen patients with mild to moderate essential hypertension underwent to bi-dimensional echocardiographic study and to 24h ambulatory blood pressure monitorization. Left ventricular mass was calculated according to previous validated formulas. The standard deviation of the mean blood pressures during day-time, night-time and 24h period was taken as blood pressure variability indices. The mean age of the group was 42 years old; 9 patients were male and all were white.
  
  
  RESULTS
  This study showed that only the systolic and diastolic blood pressure variability during the 24h period correlated significantly with left ventricular mass, (r = 0.53 and p < 0.05; r = 0.58 and p < 0.05 respectively). There was no significant correlation of the day-time and night-time pressures variability with left ventricular mass.
  
  
  CONCLUSIONS
  The systolic and diastolic blood pressure variability during the 24h period may be one of the many determinants of left ventricular hypertrophy in patients with mild to moderate hypertension.
authors.affiliation: Instituto Dante Pazzanese de Cardiologia, Hospital do Coração, Ass. San. Sirio, SP.
authors.forename: C
authors.initials: C
authors.lastname: Amodeo
authors.forename: S M
authors.initials: SM
authors.lastname: Martins
authors.forename: O
authors.initials: O
authors.lastname: Silva Júnior
authors.forename: L M
authors.initials: LM
authors.lastname: Barros
authors.forename: M
authors.initials: M
authors.lastname: Batlouni
authors.forename: J E
authors.initials: JE
authors.lastname: Sousa
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001794:Blood Pressure / Q000502:physiology*; D002648:Child; D003430:Cross-Sectional Studies; D003971:Diastole; D015716:Electrocardiography, Ambulatory; D005260:Female; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D017379:Hypertrophy, Left Ventricular / Q000209:etiology / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D013599:Systole; D013997:Time Factors
vernacular_title: Variabilidade da pressão arterial e hipertrofia ventricular esquerda na hipertensão arterial.