title: [Nycthemeral blood pressure monitoring in the diagnosis of borderline arterial hypertension in young adults].
abstract: OBJECTIVE
  Evaluating Blood Pressure Monitoring contribution at rest to the diagnosis and pathophysiology of borderline (BL) hypertension in the twenties.
  
  
  METHODS
  a nycthemeral blood pressure recording each 15 minute has been performed during the 48 first hours of hospitalisation on two groups of white twenties males with a Dinamap: 143 CONTROLS. Mean age: 21.1 +/- 2 yrs, mean height: 177 +/- 7 cm, mean weight: 71 +/- 11 kg; 104 BL hypertensive patients. Mean age: 21 +/- 2 yrs, mean height: 178 +/- 7 cm, mean weight: 78 +/- 12 kg. Mean BP recording levels are smaller than casual measurements in two groups: CONTROLS (Casual BP: 125/71, BP recording on 24 hours: 117/60, day time: 121/63, nighttime: 110/54 mmHg). BL hypertensives (Casual BP: 144/83, BP recording on 24 h: 132/69, daytime: 137/73, nighttime: 121/60 mmHg). Nycthemeral BP variability measured by the standard deviation of mean pressure is not different in two groups for systolic variability, it significantly differs for diastolic variability (BL: 7.6/CONTROLS: 5.5, p less than 0.01). Correlations between casual BP and diurnal records are stronger in controls than in BL patients showing a lower predictive value of clinical assessment in BL patients. Though the same heart rate at sleep, BP is significantly higher in BL than in controls. It probably means that factors different from sympathetic activity are involved in pathophysiology of borderline hypertension. The whole measurement study on 24 hours of two groups show an important overlap (the 65th percentile in BL systolic BP correspond with the 95th of controls, the 74th percentile in BL diastolic BP correspond with the 95th in controls). That make difficult the recording evaluation for a given patient.
mesh_terms: D000328:Adult; D000367:Age Factors; D001795:Blood Pressure Determination / Q000379:methods; D002940:Circadian Rhythm; D006801:Humans; D006973:Hypertension / Q000175:diagnosis*; D008991:Monitoring, Physiologic; D012146:Rest
vernacular_title: Apport de l'enregistrement tensionnel nycthéméral au diagnostic de l'hypertension artérielle limite de l'adulte jeune.