title: [Evaluation of a method for ambulatory and automatic measurement of nyctohemeral arterial pressure].
abstract: This study was designed to evaluate a method of automatic non-invasive ambulatory blood pressure monitoring. Using a Del Mar Avionics Pressurometer II, we tested 12 normal subjects at rest and during exercise in our laboratory, and 12 patients with borderline hypertension during 24 hours of normal activity. At rest correlation coefficient of sequential measurements between pressurometer and a standard mercury sphygmomanometer were 0.96 for individual systolic measurements, 0.65 for individual diastolic measurements, and 0.99 for sequentially coupled diastolic or systolic measurements. The same correlation coefficients were found during a low level exercise test on cycloergometer (50 watts); at a higher level (75 watts), the correlation coefficient for systolic measurements is still high (0.93), whereas for diastolic measurements the correlation coefficient is low (0.45) in our experimental conditions. Fifty-eight non-invasive ambulatory recordings were obtained during normal daily activities. About 10% of the measurements were eliminated because of artefacts. We conclude that the nycthemeral fluctuations of the blood pressure can be reasonably estimated by the Del Mar Avionics Pressurometer II, but that such results can be obtained only if special attention is given to the positioning of the pressurometer on a motivated patient.
mesh_terms: D000328:Adult; D000553:Ambulatory Care; D001795:Blood Pressure Determination / Q000295:instrumentation*; D002940:Circadian Rhythm; D006801:Humans; D006973:Hypertension / Q000175:diagnosis*; D005082:Physical Exertion
vernacular_title: Evaluation d'une méthode de mesure ambulatoire et automatique du profil nycthéméral de la pression artérielle.