Title
Comparison of Portapres® with standard sphygmomanometry in pregnancy
Author
TNO Kwaliteit van Leven
Hehenkamp, W.J.K.
Rang, S.
van Goudoever, J.
Bos, W.J.W.
Wolf, H.
van der Post, J.A.M.
Publication year
2002
Abstract
Background: Continuous beat-to-beat noninvasive blood pressure (BP) measurement is possible with Portapres®. It constructs finger arterial waveforms beat-to-beat. Dedicated software is used to analyze the arterial waveforms. A new technique has been developed to reconstruct brachial intraarterial pressure that uses return to flow (RTF). This method has been validated against invasive intraarterial measurements in nonpregnant individuals. Objectives: To validate Portapres in normal and preeclamptic pregnant women against standard aneroid sphygmomanometry according to Riva-Rocci-Korotkoff (RRK). Methods: In 30 normotensive (10 in each trimester) and 20 pre-eclamptic women, two trained observers blinded from each other's results took BP measurements with a standard sphygmomanometer. These measurements were compared with sequential same-arm averaged measurements obtained during 30 sec by Portapres, following protocols from the Association for the Advancement of Medical Instrumentation (AAMI, mean accepted difference ≤ 5 mm Hg, SD ≤ 8) and British Hypertension Society (BHS, gradings A down to D). Results: A total of 150 measurement pairs were analyzed. Cumulative percentages of absolute pressure differences for all women (BHS) and mean pressure differences (SD) for different trimesters and preeclampsia (AAMI) between sphygmomanometry and Portapres were calculated. Overall, mean difference (SD) for systolic BP was 5 (SD 8) and for diastolic BP was -3 (SD 8), although analysis of variance revealed a significant effect for preeclampsia on diastolic differences between the two methods of BP measurement (p
Subject
Portapres
Standard sphygmomanometry
adolescent
analysis of variance
arterial pressure
artery blood flow
blood pressure measurement
blood pressure monitoring
brachial artery
clinical article
clinical protocol
clinical trial
computer program
controlled clinical trial
controlled study
device
diastolic blood pressure
digital artery
heart output
instrumentation
preeclampsia
sphygmomanometer
standard
systolic blood pressure
validation process
waveform
comparative study
monitor
pathophysiology
validation study
Adolescent
Adult
Blood Pressure Determination
Blood Pressure Monitors
Female
Humans
Pre-Eclampsia
Pregnancy
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http://resolver.tudelft.nl/uuid:c17aaa8b-eeff-4014-bba3-07c2af5a2c02
DOI
https://doi.org/10.1081/prg-120002910
TNO identifier
280315
ISSN
1064-1955
Source
Hypertension in Pregnancy, 21 (21), 65-76
Document type
article