Inaccuracy in Determining Mean Arterial Pressure With Oscillometric Blood Pressure Techniques

Vos, Jorn; Vincent, H. H.; Verhaar, Marianne C.; Bos, Willem Jan W.

doi:10.1093/ajh/hps072

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…(1) With another proprietary oscillometric device, brachial FF was reported as 0.24 and the authors deemed the accompanying MAP estimates "too imprecise to be used for calibration." (23) It has been found that heart rate can affect MAP(24) but our cohorts did not differ in HR.…”

Section: Discussionmentioning

confidence: 55%

Impact of arterial location, pressure wave indicators, and measurement devices on arterial form factor and mean and central arterial pressure

et al. 2022

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Mean arterial pressure (MAP) is often estimated from cuff systolic (S) and diastolic (D) blood pressure (BP) using a xed arterial form factor (FF, usually 0.33). If MAP is measured accurately, a true FF can be calculated: FF = [MAP-DBP] / [SBP-DBP]. Because waveform shapes vary, true measured FF should also vary and MAP accuracy may be affected. We studied factors affecting FF using radial tonography (SphygmoCor, n = 376) or brachial oscillometry (Mobil-O-Graph, n = 157) and to compare devices, 101 pairs were matched precisely for SBP and DBP. SphygmoCor brachioradial FF correlated strongly with central FF (r 2 = 0.75), central augmentation index (cAI, r 2 = 0.39), and inversely with pulse pressure ampli cation (PPA) ratio (r 2 = 0.44) [all p < 0.000]; brachioradial FF was lower than central (c) FF (0.34 vs 0.44, 95% CI's [0.23,0.46] and [0.34,0.54], p < 0.000); and on forward stepwise regression, brachioradial FF correlated with PPA ratio, age, heart rate, and cAI (multiple-r 2 0.63, p < 0.000). With Mobil-O-Graph: brachial FF was xed, lower than the corresponding cFF [mean(SD)] 0.46(0.00098) vs 0.57(0.048), p < 0.000], and uncorrelated with other characteristics; MAP and cSBP were higher than SphygmoCor by 6.3 and 2.2 mmHg (p < 0.005) but also had signi cant systematic negative biases. We conclude that with radial tonometry (SphygmoCor), FF varies with pulse wave morphology within and between individuals and by measurement site, age, and heart rate. With oscillometry (Mobil-O-Graph), brachial FF was unrelated to other clinical variables, xed and high; MAP and cSBP were higher than tonometry, with systematic negative biases.

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Section: Discussionmentioning

confidence: 55%

Impact of arterial location, pressure wave indicators, and measurement devices on arterial form factor and mean and central arterial pressure

et al. 2022

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“…Currently, a precise, individualized measurement of mean arterial pressure can be obtained only with intra-arterial measurements of blood pressure or with applanation tonometry [15].…”

Section: Discussionmentioning

confidence: 99%

“…As a gold standard for non-invasive pressure measurements, the second best solution is applanation tonometry [15]. However adding 1/3 of the pulse pressure to the diastolic blood pressure is the most frequently used method for calculating mean arterial pressure.…”

Section: Discussionmentioning

confidence: 99%

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Correlation between Hyperlipidemia and Hypertension, Mean Arterial Pressure, Pulse Pressure among Africans

Ademolu¹

2017

EMIJ

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“…Inaccuracies in the osccillometric MAP determination have been reported by several investigators [5,6].…”

Section: Introductionmentioning

confidence: 94%

Wrist cuff method determines mean arterial pressure in dual-cuff blood pressure system

Jílek¹,

Štork

2014

2014 International Conference on Applied Electronics

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Mean arterial pressure (MAP) is the pressure in the arteries averaged over time. Oscillometric blood pressure (BP) monitors determine the value of MAP by processing arterial pulses in the cuff. Cuff pressure at the point of largest pulse amplitude is equal to MAP. The oscillometric determination of MAP is subject to errors resulting from wave reflections and stroke volume variability. We developed an experimental system that uses two cuffs in order to improve accuracy of noninvasive BP measurement. The system consists of a compact module with pneumatic and electronic circuits, two detachable cuffs (arm and wrist), and a notebook computer connected to the module via a USB cable. This study concentrated on improvements in the determination of MAP using the wrist cuff pulses. The smallest wrist cuff amplitude in the middle segment of BP test was determined as the point of MAP. The corresponding arm cuff pressure was the value of MAP. Waveforms and cuff pressures from 40 BP tests were used to determine oscillometric, wrist cuff, and calculated MAP values and the values were compared. The results indicated that it is possible to determine MAP from wrist cuff pulse amplitudes and that the wrist cuff method may be more accurate than the oscillometric method.Keywords -Mean arterial pressure; blood pressure; dual cuff system; oscillometric method; wrist cuff pulse; wave reflections.I.

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Inaccuracy in Determining Mean Arterial Pressure With Oscillometric Blood Pressure Techniques

Cited by 9 publications

References 10 publications

Impact of arterial location, pressure wave indicators, and measurement devices on arterial form factor and mean and central arterial pressure

Impact of arterial location, pressure wave indicators, and measurement devices on arterial form factor and mean and central arterial pressure

Correlation between Hyperlipidemia and Hypertension, Mean Arterial Pressure, Pulse Pressure among Africans

Wrist cuff method determines mean arterial pressure in dual-cuff blood pressure system

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