Single cuff comparison of two methods for indirect measurement of arterial blood pressure: standard auscultatory method versus automatic oscillometric method

Pessenhofer, H.

doi:10.1007/bf01907432

Cited by 31 publications

(13 citation statements)

References 11 publications

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“…Arterial blood pressure was recorded non-invasively in the right brachial artery, using a semi-automated oscillometric device (Dinamap; Criticon, Tampa, FL, U.S.A.). With this method the pulse pressure in the brachial artery can be assessed reliably [13]. In previous studies, the pulse pressure in the brachial artery has been proven to correlate well with the pulse pressure in the carotid artery [14].…”

Section: Methodsmentioning

confidence: 98%

“…The intra-observer intrasession coefficient of variation ( = SD/mean x 100%) for the determination of D, ADID, DC and CC of the common carotid artery was 4.5%, 7.9%, 8.3% and 9.1%, respectively. In the common femoral artery the intra-observer intra-session coefficients of variation were 2.7% (D), 12.4% (ADID), 13.4% (DC) and 12.5% (CC). Intra-observer inter-session variability was comparable with intra-observer intrasession variability for all vessels.…”

Section: Methodsmentioning

confidence: 99%

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Female sex Hormones do not Influence Arterial wall Properties during the Normal Menstrual Cycle

et al. 1997

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1. In previous studies, the elastic properties of the common carotid artery were found to differ between men and women. In these studies, however, the phase of the menstrual cycle was not taken into consideration. It was the aim of the present study to investigate the effect of changing ovarian hormone levels during the normal menstrual cycle on the arterial wall properties of female large arteries. 2. We investigated the elastic right common carotid artery and the muscular right common femoral artery of normotensive young (18-35 years) female subjects (n = 12). The arterial distensibility and cross-sectional compliance coefficients were determined by the use of a specially designed ultrasonic wall-tracking device and measurements of automatic brachial artery cuff blood pressure. The phase of the menstrual cycle was assessed by ultrasonographic evaluation and measurement of 17 beta-oestradiol and progesterone blood plasma levels. 3. The distensibility coefficient and the cross-sectional compliance coefficient of both the common carotid and the common femoral artery did not change significantly during the normal menstrual cycle despite evidently changing ovarian hormone levels. 4. We conclude that the menstrual cycle does not influence the arterial wall properties of either the elastic common carotid artery or the muscular common femoral artery.

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Section: Methodsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Female sex Hormones do not Influence Arterial wall Properties during the Normal Menstrual Cycle

et al. 1997

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“…External forces shift the operating point on this curve, such increasing d(t), an effect that is used in oscillometric blood pressure devices [9]. For arterial pulsations this is instantaneous blood pressure, which affects the third term of (2).…”

Section: Signal Model Of Reflectance Ppgmentioning

confidence: 99%

Influence of Contact Forces on Wrist Photo plethysmography – Prestudy for a Wearable Patient Monitor / Einfluß von Kontaktkräften auf die photoplethysmografische Pulsmessung am Handgelenk – Vorstudie zu einem tragbaren Patientenmonitor

Rafolt¹,

Gallasch²

2004

Biomedizinische Technik/Biomedical Engineering

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The practical setting shows that gentle manual pressure on a photosensor suffices to improve the detectability of arterial pulses, but changes in the pressure applied may also produce signal artefacts. To study these effects, stepwise increasing contact forces (0.5 to 4 N) were applied to a photosensor placed over the radial artery. Additionally, the influence of optical coupling between sensor and skin surface was examined by introducing an elastic distance ring. The AC and DC components from the recorded photoplethysmogram were analysed. The AC component (absorption due to arterial pulsation) increased with the pressure applied; at lower forces (0.5 to 3 N) an introduction of the ring enhanced this effect. The characteristic of the DC component (backscattering from non-pulsating tissues) depends on optical coupling: without the ring the DC component increased stepwise with force (slope 0.035 V/N), but with the ring in place this component decreased (slope -0.075 V/N). Since the sensitivity of the pulse signal to artifacts is related to the slope of the DC component, such artefacts can be minimized by making the slope small. The utilization of these results to improve pulse detection and reduce motion artefacts in a wearable wrist device is discussed.

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“…Tampa, Fla.). With this technique the arterial pulsepressure (systolic minus diastolic blood pressure) can be adequately assessed [16], Arterial pressure was recorded at least 6 times during the ultrasound investigation, and the average value of the last four recordings was taken as the patient's reading.…”

Section: Introductionmentioning

confidence: 99%

Different Effects of Ageing on Elastic and Muscular Arterial Bifurcations in Men

Merode¹,

Brands

Hoeks

et al. 1996

J Vasc Res

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In a previous study we have shown that the wall of the elastic carotid artery bifurcation (CAB) stiffens inhomogeneously with increasing age, the carotid artery bulb being most affected. In the present study the effect of ageing on the elastic properties of the wall and the strain the wall is exposed to along the muscular femoral artery bifurcation (FAB) was investigated using the CAB for comparison. The study was performed with 10 young (aged 20-30 years) and 10 old (50-60 years) presumed healthy volunteers. Distensibility along the bifurcation was determined by measuring noninvasively the maximum relative diameter changes of the artery during systole (peak △d/d · 100%), which is also a measure of strain, at various sites along both bifurcations by means of a vessel wall moving detector system. This system also makes the assessment of (end-diastolic) diameter possible. At all levels along the CAB, the diameter was significantly larger in the old than in the young. In the FAB, the diameter was only significantly larger in the old than in the young in the common and superficial femoral arteries. At all levels in the CAB, peak △d/d·100% was significantly lower in the old than in the young, the carotid artery bulb being more affected than the common carotid artery (CCA), while in the FAB this parameter was lower in the old than in the young only in the common femoral artery (CFA). Peak △d/d· 100% was similar in the CCA and in the bulb in the young, but significantly higher in the CCA than at all levels in the bulb in the old. In the FAB, in the young peak △d/d · 100% was significantly higher in the CFA than at both levels in the deep and superficial femoral arteries, while in the old no significant differences in peak △d/d · 100% along the FAB could be detected. These findings indicate that the loss of wall elasticity with increasing age is different in the muscular and elastic arterial bifurcations investigated. The homogeneous distribution of wall elasticity in the elastic CAB at a younger age becomes inhomogeneous at an older age, while the opposite is observed in the muscular FAB. The changes in strain the different parts of the bifurcations are exposed to with increasing age are different in the CAB and the FAB. Differences in distensibility along bifurcations will make them deform inhomogeneously during the cardiac cycle.

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Single cuff comparison of two methods for indirect measurement of arterial blood pressure: standard auscultatory method versus automatic oscillometric method

Cited by 31 publications

References 11 publications

Female sex Hormones do not Influence Arterial wall Properties during the Normal Menstrual Cycle

Female sex Hormones do not Influence Arterial wall Properties during the Normal Menstrual Cycle

Influence of Contact Forces on Wrist Photo plethysmography – Prestudy for a Wearable Patient Monitor / Einfluß von Kontaktkräften auf die photoplethysmografische Pulsmessung am Handgelenk – Vorstudie zu einem tragbaren Patientenmonitor

Different Effects of Ageing on Elastic and Muscular Arterial Bifurcations in Men

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