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Reproducibility of twenty-four-hour finger arterial blood pressure, variability and systemic hemodynamics
- Source :
- Journal of hypertension, 15, 1761-1765. Lippincott Williams & Wilkins, Journal of hypertension, 15(12 Part 2), 1761-1765. Lippincott Williams and Wilkins
- Publication Year :
- 1997
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 1997.
-
Abstract
- Objective At present, non-invasive continuous monitoring of finger arterial blood pressure by the volume-clamp technique is considered the best approach to obtain reliable assessments of beat-to-beat blood pressure. However, data on the reproducibility (accuracy and precision) of prolonged recordings and of the hemodynamics derived from wave-form analysis are not available. Design Ten patients with untreated essential hypertension and eight normotensive subjects were monitored by Portapres over 24 h in the hospital on two occasions with 1-4 weeks in-between. Physical and mental activities were standardized as far as possible to minimize intra- and intersubject biological variability. Stroke volume was obtained by the Modelflow method. Differences between the two recordings were computed separately for the day (0700 to 2300 h) and the night (2300 to 0700 h) and for all hours. Differences in stroke volume were calculated as percentage change from the first recording. Results Accuracy was good in both groups and bias was close to zero. Precision was also remarkable in the daytime, and at least as good as values reported in studies that used the standard intra-arterial recording. The SD of the differences in systolic and diastolic pressure in the hypertensives in the daytime were 6.6 and 4.7 mmHg, respectively. At night, precision was less good, possibly because of the 30 min finger-cuff switching: 12.5 and 6.5 mmHg for systolic and diastolic pressure, respectively. The average stroke volume did not change more than 8% at most between the first and the second recordings. Conclusion These results indicate that the Finapres and Portapres devices are a reliable substitute for intra-arterial recording, and are most useful instruments for the study of blood pressure regulation.
- Subjects :
- Adult
Male
Accuracy and precision
Physiology
Hemodynamics
Blood Pressure
Essential hypertension
Fingers
Internal Medicine
Humans
Medicine
Aged
Reproducibility
business.industry
Continuous monitoring
Reproducibility of Results
Stroke volume
Blood Pressure Monitoring, Ambulatory
Middle Aged
medicine.disease
Blood Pressure Monitors
Blood pressure
Systemic hemodynamics
Anesthesia
Hypertension
Female
Cardiology and Cardiovascular Medicine
business
Subjects
Details
- ISSN :
- 02636352
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- Journal of Hypertension
- Accession number :
- edsair.doi.dedup.....418f31cb8dd3ac93aa5ae0ff15270211