caa a22 4500 465739911 CHVBK 20180323111806.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF02364156 doi (NATIONALLICENCE)springer-10.1007/BF02364156 Blood pressure levels and variance assessed by ambulatory monitoring: Optimal parameters [Elektronische Daten] [F. Yates, Laurel Benton] We obtained multiple ambulatory blood pressure monitoring (ABPM) records over five years from two trained, normotensive subjects experienced in wearing the apparatus. The resulting time series data on systolic blood pressure (SBP), diastolic blood pressure (DBP), and heart rate (HR) were used to suggest optimal parameters for monitoring by two instruments (Colin Medical Instruments ABPM-630 and Del Mar Avionics Pressurometer) and to compare two indirect methods (auscultatory and oscillometric). A 10-min sampling interval day and night provided sufficient density of data to support spectral analysis for ultradian rhythms in the frequency range of one cycle per hour to one cycle per 9 h on a 24-h record. Rhythms with major periods of approximately 3, 6, and 9 h were variously found in 94 normotensive subjects, aged 20 to 95 years, including the two trained subjects. When the monitoring period was extended to 72 h, the circadian (∼24 h) rhythm could be more sharply defined, as well as a 12-h harmonic. In some studies the two trained subjects wore two monitors, one on each arm, set to read simultaneously. From the simultaneous measurements on both arms, it was shown that averaging across three points (30 min of record) reduced the coefficient of variation between the two simultaneous records to 6% or less. Auscultatory and oscillometric methods were equally reliable. Echocardiographic data were obtained in five normotensive subjects and compared to their ABPM data. The ABPM records provided additional information about cardiovascular function not merely duplicating that obtained by acute stress tests, such as exercise or cold pressor responses, or echocardiography. Standards for ABPM are suggested. Pergamon Press plc, 1990 Systolic blood pressure nationallicence Ambulatory monitoring nationallicence Circadian rhythm nationallicence Ultradian rhythms nationallicence Optimal parameters nationallicence Stress tests nationallicence Left ventricular mass nationallicence Diastolic blood pressure nationallicence Ergometry nationallicence Cold pressor test nationallicence Echocardiography nationallicence ABPM : Ambulatory blood pressure monitoring nationallicence AUC : Area under the curve nationallicence BMI : Body mass index calculated as weight in kilograms/(height in meters)2 nationallicence CK : Korotkoff sound recording obtained from the Colin apparatus nationallicence CO : Oscillometric recording obtained by the Colin apparatus nationallicence CV : Coefficient of variation nationallicence CV′ : A modified coefficient of variation calculated as defined in the text nationallicence DBP : Diastolic blood pressure nationallicence DK : Korotkoff sound recording from the Del Mar apparatus nationallicence ECG : Electrocardiogram nationallicence FFT : Fast Fourier Transform nationallicence FOS : Fast Orthogonal Search method of Korenberg nationallicence HBI : Hyperbaric index (defined in the text) nationallicence HR : Heart rate nationallicence L : Left arm record nationallicence LV : Left ventricle nationallicence LVH : Left ventricular hypertrophy nationallicence LVMI : Left ventricular mass index in g/m2 nationallicence M : Metabolic power (energy per unit time in metabolic activities) nationallicence MAP : Mean arterial pressure nationallicence PP : Pulse pressure nationallicence R : Right arm record nationallicence S1 : Subject 1, a young woman nationallicence S2 : Subject 2, a middle-aged man nationallicence SBP : Systolic blood pressure nationallicence SD : Standard deviation nationallicence SD′ : Modified standard deviation derived as defined in the text nationallicence W : Body weight nationallicence WHO : World Health Organization nationallicence Yates F. Physiological Monitoring Unit Department of Medicine, University of California, 1950 Sawtelle Blvd., Suite 330, 90025-7014, Los Angeles, CA aut Benton Laurel Physiological Monitoring Unit Department of Medicine, University of California, 1950 Sawtelle Blvd., Suite 330, 90025-7014, Los Angeles, CA aut Annals of Biomedical Engineering Kluwer Academic Publishers 18/4(1990-07-01), 377-405 0090-6964 18:4<377 1990 18 10439 https://doi.org/10.1007/BF02364156 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02364156 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yates F. Physiological Monitoring Unit Department of Medicine, University of California, 1950 Sawtelle Blvd., Suite 330, 90025-7014, Los Angeles, CA aut NATIONALLICENCE 700 1- Benton Laurel Physiological Monitoring Unit Department of Medicine, University of California, 1950 Sawtelle Blvd., Suite 330, 90025-7014, Los Angeles, CA aut NATIONALLICENCE 773 0- Annals of Biomedical Engineering Kluwer Academic Publishers 18/4(1990-07-01), 377-405 0090-6964 18:4<377 1990 18 10439 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer