Hawksley random zero sphygmomanometer versus the standard sphygmomanometer:an investigation of mechanisms

Kinirons, M T, Maskrey, V L, Lawson, M, Swift, C G and Jackson, S H (1995) Hawksley random zero sphygmomanometer versus the standard sphygmomanometer:an investigation of mechanisms. Journal of Human Hypertension, 9 (7). pp. 571-573. ISSN 0950-9240

Full text not available from this repository. (Request a copy)

Abstract

There has been recent controversy over the accuracy of the Hawksley random zero sphygmomanometer (RZS). In most instances, there has been a bias towards lower recordings with the RZS. In an attempt to identify the mechanism, we designed a study to test the hypothesis that biased error is due to: (1) the magnitude of the random zero; and (2) the magnitude of the pressure being recorded. A RZS (60 mm Hg zero UK version) was connected via a Y-tube to a standard mercury sphygmomanometer (SMS). The circumference of the cam responsible for the variable reservoir size in the RZS was marked into quarters. Within each 10 mm Hg band from 300 to 60 mm Hg, 12 paired readings were taken randomly: three within each of the four quarters of the cam circumference. The mean SMS value was 148.8 vs. 148.2 mm Hg for the RZS. Although of minimal biological significance this difference was highly significant (t = 6.2; p

Item Type: Article
Uncontrolled Keywords: blood pressure determination,evaluation studies as topic,humans,reproducibility of results
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
Depositing User: Pure Connector
Date Deposited: 24 Jul 2015 23:21
Last Modified: 25 Jul 2018 10:44
URI: https://ueaeprints.uea.ac.uk/id/eprint/53211
DOI:

Actions (login required)

View Item