Accuracy of an Automated Blood Pressure Device in Stable Inpatients

Shuler, Cathryn L; Allison, Nancy; Holcomb, Scott; Harlan, Marquette; McNeill, Joe; Robinett, Germaine; Bagby, Susan P.

doi:10.1001/archinte.158.7.714

Cited by 25 publications

(28 citation statements)

References 13 publications

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“…The former conclusion was reached since the tested device did not satisfy the requirements of the AAMI and the BHS standards. Alternatively, the possibility that mercury sphygmomanometry-the gold standard with which automatic devices are compared 4 -was inaccurate has been excluded since differences between manual measurements by blinded and trained observers were insignificant.…”

Section: Discussionmentioning

confidence: 99%

“…The total number of BP measurements for both the READ and for validation studies is comparable, and covers the spectrum of low, medium and high BP in similar proportions for both methods. 2,4,9 Since discrepancies between automatic devices and the mercury standard are influenced by age, 10 subjects covering a spectrum of ages from 23 to 74 years were chosen for the READ.…”

Section: Discussionmentioning

confidence: 99%

“…2,3 At present validation of automatic BP measurement devices is very cumbersome, time consuming and expensive because a large number of subjects are tested across a wide range of BPs, requiring the employment of many well trained observers. 4 There is a need to simplify the validation of automatic BP measurement devices by enlisting fewer subjects, with a more restricted range of BPs and carrying out numerous BP measurements in each subject. Furthermore, it would be helpful to assess the automatic BP measurement devices as a two-step process: the first step aimed to uncover quickly and to eliminate from further assessment the grossly inaccurate devices; the second step reserved for instruments which tested favourably on initial evaluation and warrant further laborious investigations using national protocols.…”

Section: Introductionmentioning

confidence: 99%

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Rapid estimation of the accuracy of automatic blood pressure measuring devices (READ)

Gaitini

Löwenstein

et al. 1999

J Hum Hypertens

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We propose a rapid method for the evaluation of automatic blood pressure measurement devices (READ) in response to the claim to simplify the validation of those devices. The READ is based on numerous blood pressure (BP) measurements at rest and during a standardised postural challenge in a small number of subjects who exhibit a wide range of BPs. Automatic (AU) and mercury sphygmomanometric (MS) brachial BP were measured simultaneously in a blinded manner. An average of 30 measurements per patient were done in 10-min while in a supine position, followed by 30 min in head-up tilt and again supine for 10 min. Two Collin-8800 automated oscillometric devices were tested with the aid of the READ in 15 adults. The consistency of the MS standard was demonstrated by duplicate MS

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rapid estimation of the accuracy of automatic blood pressure measuring devices (READ)

Gaitini

Löwenstein

et al. 1999

J Hum Hypertens

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“…20 A mercury column sphygmomanometer (Baumanometer, standby model 0661-0250) was utilized for measurement of the BP, since this is the standard method to which other noninvasive devices of BP measurement are validated. 21 Studies on the accuracy of automated BP measurement devices showed that the majority of measurements overestimated the DBP, the SBP error varied with the device 22 and there was no predictable aberration pattern of the automated measurements. 23 The HR was recorded on an electrocardiographic monitor.…”

Section: Protocol Of the Capnography-hutt 19mentioning

confidence: 99%

Hyperventilation and amplified blood pressure response: is there a link?

et al. 2005

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Based on prior studies, the hypothesis that hyperventilation (HV) may have a pressor effect and play a causal role in hypertension has been suggested. The objective of this study was to correlate HV with blood pressure (BP)-change during a postural challenge. Consecutive subjects referred for evaluation of syncope, dizziness, chronic fatigue syndrome (CFS), fibromyalgia, or non-CFS fatigue were assessed with a 10-min supine 30-min head-up tilt test combined with capnography. We selected for analysis the records of patients aged 17-70 years, not taking vasoactive medications, having sitting systolic BP (SBP)o140 mmHg, sitting diastolic BP (DBP) o90 mmHg, and who completed 30 min of tilt. HV was diagnosed when end-tidal pressure of CO 2 o30 mmHg was recorded consecutively for X10 min. Postural hypertension (PHT) was diagnosed when DBP on tilt X90 mmHg was recorded consecutively for X10 min. DBP-change was computed as (median DBP on tilt) À(median DBP supine). PHT and DBP-change were correlated with HV. A total of 320 patient charts were reviewed. PHT was present in 30 cases. The mean DBP-change in patients with PHT was þ 9.9 mmHg (s.d. 5.8), with three patients manifesting HV. Of the remaining 290 patients, 56 had HV, their mean DBP-change was -0.3 mmHg (s.d. 7.2). The other 234 patients without HV had a mean DBP-change þ 0.95 mmHg (s.d. 5.7), comparable to the DBP-change in patients with HV. In, conclusion, posturally induced HV was not associated with an increase in BP, nor was PHT associated with HV, except in a small minority of cases.

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“…ation of BP at rest 12,13 and during HUTT. 14,15 The HR measurements were recorded on an electrocardiographic monitor.…”

Section: Study Populationmentioning

confidence: 99%

The Haemodynamic Instability Score (HIS) for assessment of cardiovascular reactivity in hypertensive and normotensive patients

et al. 2001

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The normal response to postural challenge is characterised by maintenance of relatively stable blood pressure (BP) and heart rate (HR) after 30 sec to 30 min of headup tilt. The objective of the present study was to determine the degree of instability of cardiovascular responses to postural challenge in normotensive and hypertensive subjects. In the initial phase of the study, two groups of age and sex-matched subjects were assessed: essential hypertension (n ‫؍‬ 20) and healthy (n ‫؍‬ 37). The BP and HR were recorded at 5-min intervals during the course of the 10-min supine-30-min head-up tilt test (HUTT). We categorised 'BP-change' as the difference between individual BP measurements during HUTT and the last recumbent BP value, divided by latter value. The average and standard deviation (SD) of the recorded BP changes were calculated, and BP changes were plotted along a time curve. A computerised image analyser then calculated the outline ratio (OR) and fractal dimension (FD) values for each of the curves. An identical process evaluated measurements for HR-changes. BP-and HR-changes were then converted into absolute numbers, and the average, SD, OR, and FD were calculated. A multivariate analysis was conducted, evaluating independent predictors of hypertension. Finally, an equation for the calculation of 'haemodynamic instability score' (HIS) was deduced and a cut-off between HIS of hypertensive and normo-

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Accuracy of an Automated Blood Pressure Device in Stable Inpatients

Cited by 25 publications

References 13 publications

Rapid estimation of the accuracy of automatic blood pressure measuring devices (READ)

Rapid estimation of the accuracy of automatic blood pressure measuring devices (READ)

Hyperventilation and amplified blood pressure response: is there a link?

The Haemodynamic Instability Score (HIS) for assessment of cardiovascular reactivity in hypertensive and normotensive patients

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