Title :
Chronobiologic analysis of blood pressure variability in healthy subjects
Author :
Ayala, D.E. ; Hermida, R.C. ; Fernández, J.R. ; Sanchez de la Pena, S.
Author_Institution :
ETSI Telecomunicacion, Santiago Univ., Vigo, Spain
Abstract :
In order to recognize variability as a source of information, 21 automatically monitored blood pressure series from healthy subjects, 19-21 yr of age, taken every 30 min for 48 h, were analyzed. Individual circadian parameters obtained by least squares were subsequently used for the computation of a 90% reference region for the amplitude-acrophase pair. A significant circadian rhythm could be demonstrated in all subjects for systolic blood pressure, in all but one for diastolic blood pressure, and in all but two for heart rate. The results suggest that parameters that include circadian rhythms should be used in place of single values when studying blood pressure variability
Keywords :
haemodynamics; 19 to 21 yr; 48 hr; amplitude-acrophase pair; automatic monitoring; blood pressure variability; chronobiological analysis; circadian parameters; diastolic blood pressure; healthy subjects; heart rate; least squares; systolic blood pressure; Blood pressure variability; Circadian rhythm; Computerized monitoring; Diseases; Heart rate; Information analysis; Information resources; Sampling methods; Software tools; Telecommunication standards;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96373
