Non-invasive quantification of peripheral arterial volume distensibility and its non-linear relationship with arterial pressure

Zheng, Dingchang; Murray, Alan

doi:10.1016/j.jbiomech.2009.02.011

Cited by 28 publications

(26 citation statements)

References 37 publications

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“…The accuracy of derived BP values was low in comparison with the conventional method. 29 In this study, BP was estimated based on PTT by the linear function but a number of authors obtained a nonlinear relationship between PTT and BP, [16][17][18] while others reported linear relations which was in consistent with our study. 20,22 In the present study, SBP was used to monitor BP based on PTT, because several studies have shown that SBP could be measured more accurately than diastolic blood pressure.…”

Section: Discussionsupporting

confidence: 86%

“…20,22 In the present study, SBP was used to monitor BP based on PTT, because several studies have shown that SBP could be measured more accurately than diastolic blood pressure. 16,20,22 The correlation between SBP and PTT was found to be R ¼ 0:74 AE 0:08 for the normal and 0.7 AE 0.07 for the hemodialysis subjects. A brief summary of the results in previous studies [22][23][24][25] gives a mean correlation coe±cient of 0.63 which is in the range 0.33-0.81.…”

Section: Discussionmentioning

confidence: 92%

“…13 Pulse transition time (PTT) is another method, acting based on continuous recording of ECG and pulse wave. The main features of PTT method including safety, noninvasive and continuous BP monitoring has been documented in a vast array of studies, [14][15][16][17][18] but ECG recording impose another set of the complexity to hemodialysis. This study aimed to develop a system for continuous monitoring of BP in patients undergoing hemodialysis.…”

Section: Introductionmentioning

confidence: 99%

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A new approach for detecting sudden hypotension in hemodialysis by using dual-channel optical system

Amin

Golmakani

Joharinia

2017

J. Innov. Opt. Health Sci.

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Dialysis hypotension is one of the most prevalence symptoms of dialysis and occurs in 40% of treatment sessions. Detection and prediction of hypotension is important for the well-being of the patient and for optimizing treatment. The aim of this study was to construct optical system to monitor blood pressure (BP) continuously and without cu® in hemodialysis based on pulse transit time (PTT) method. To measure the BP changes, dual-channel optical system were developed. In this study, individuals were classi¯ed into two groups of normal and hemodialysis. In both groups, BP and consequently PTT were earned three times in di®erent positions. After the initial calibration, the regression equation was drawn for each subject. In normal group, each subject was placed in the supine position and BP was measured both by designed system and sphygmomanometer cu®. During BP measurements, in addition to BP, blood pressure decline was also monitored by optical system. For hemodialysis group, the same measurement setup was adopted. In both groups, the error between cu® method and PTT was calculated. Correlation coe±cients for BP cuff vs BP PTT were calculated and Bland-Altman plot was performed for the normal and hemodialysis groups. In this study 16 subjects participated. The results for normal group showed that maximum di®erence between cu® method and the present method was 14 mmHg and for dialysis group was 16 mmHg. Bland-Altman plot in normal group revealed limits of agreement from À13.98 to 13.18 mmHg. Considering hemodialysis group, limits of agreement were from * Corresponding author. This is an Open Access article published by World Scienti¯c Publishing Company. It is distributed under the terms of the Creative Commons Attribution 4.0 (CC-BY) License. Further distribution of this work is permitted, provided the original work is properly cited. À15.94 to 13.88 mmHg. The correlation coe±cient was 0.74 for normal group and was 0.72 for hemodialysis group. The proposed system can monitor BP continuously and diagnose sudden hypotension. So it can be recommended as a useful method to indicate hypotension and can be used for dialysis unit.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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A new approach for detecting sudden hypotension in hemodialysis by using dual-channel optical system

Amin

Golmakani

Joharinia

2017

J. Innov. Opt. Health Sci.

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“…Similar nonlinear relations between BP and brachial-ankle PWV were described by Yamashina et al 2003 in human beings. Other authors obtained a non-linear relationship between PVW and BP, which was inverted to that of the above cited studies (Chen et al 2009;Zheng and Murray 2009). Linear as well as non-linear PTT-BP functions have been described in isolated canine common carotid arteries (Callaghan et al 1984), while a number of authors reported linear relations (Geddes et al 1981;Payne et al 2006).…”

Section: Discussionmentioning

confidence: 65%

Continuous blood pressure measurement by using the pulse transit time: comparison to a cuff-based method

Gesche

D²,

Küchler³

et al. 2011

Eur J Appl Physiol

402

263

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Pulse transit time (PTT) and pulse wave velocity (PWV), respectively, were shown to have a correlation with systolic blood pressure (SBP) and have been reported to be suitable for indirect BP measurements. The aim of this study was to create a function between SBP and PWV, and to test its reliability for the determination of absolute SBP using a non-linear algorithm and a one-point calibration. 63 volunteers performed exercise to induce rises in BP. Arterial PTT was measured between the R-spike of the ECG and the plethysmographic curve of finger pulse-oximetry. The reference BP was measured using a cuff-based sphygmomanometric aneroid device. Data from 13 of the 63 volunteers served for the detection of the PWV-BP relationship. The created non-linear function was used to calculate BP values after individual correction for the BP offset in a group of 50 volunteers. Individual correlation coefficients for SBP measured by PTT (SBP(PTT)) and by cuff (SBP(CUFF)) varied between r = 0.69 and r = 0.99. Taking all data together, we found r = 0.83 (276 measurements in 50 volunteers). In the Bland-Altman plot, the limits of agreement were [Formula: see text]± 19.8 mmHg. In conclusion, comparing SBP values using the PTT-based method and those measured by cuff resulted in a significant correlation. However, the Bland-Altman plot shows relevant differences between both methods, which are partly due to greater variability of the SBP(PTT) measurement during intensified exercise. Results suggest that PTT can be used for measuring absolute SBP when performing an individual correction for the offset of the BP-PWV relation.

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“…Among them, arterial volume distensibility, with the definition of the relative change in blood volume with a known change in arterial transmural pressure (Distensibility = (∆V/V)/ ∆P , where ∆V is the change in blood volume for a segment of artery, and ∆P is transmural pressure change across the vascular wall, which is the difference between internal vessel pressure and external pressure), is an indirect quantification of the mechanical and hence structural properties of the arterial wall. In real practice, arterial volume distensibility is calculated from the measurement of pulse wave velocity (PWV) or arterial pulse propagation time based on the Bramwell and Hill equation111213 (, ρ is blood density = 1025 kg/m 3 ), where the pulse refers to the pulse transmitted down an artery after each heartbeat, from which arterial volume distensibility is derived as:…”

mentioning

confidence: 99%

Peripheral arterial volume distensibility changes with applied external pressure: significant difference between arteries with different compliance

Chen¹,

Chen

Si³

et al. 2017

Sci Rep

Self Cite

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This study aimed to quantify the different effect of external cuff pressure on arterial volume distensibility between peripheral arteries with different compliance. 30 healthy subjects were studied with the arm at two positions (0° and 45° from the horizontal level) to introduce different compliance of arteries. The electrocardiogram and finger and ear photoplethysmograms were recorded simultaneously under five external cuff pressures (0, 10, 20, 30 and 40 mmHg) on the whole arm to obtain arterial volume distensibility. With the applied external cuff pressures of 10, 20, 30 and 40 mmHg, the overall changes in arterial volume distensibility referred to those without external pressure were 0.010, 0.029, 0.054 and 0.108% per mmHg for the arm at the horizontal level, and 0.026, 0.071, 0.170 and 0.389% per mmHg for the arm at 45° from the horizontal level, confirming the non-linearity between arterial volume distensibility and external pressure. More interestingly, the significant differences in arterial volume distensibility changes were observed between the two arm positions, which were 0.016, 0.043, 0.116 and 0.281% per mmHg (all P < 0.01). Our findings demonstrated that arterial volume distensibility of peripheral arm arteries increased with external pressure, with a greater effect for more compliant arteries.

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Non-invasive quantification of peripheral arterial volume distensibility and its non-linear relationship with arterial pressure

Cited by 28 publications

References 37 publications

A new approach for detecting sudden hypotension in hemodialysis by using dual-channel optical system

A new approach for detecting sudden hypotension in hemodialysis by using dual-channel optical system

Continuous blood pressure measurement by using the pulse transit time: comparison to a cuff-based method

Peripheral arterial volume distensibility changes with applied external pressure: significant difference between arteries with different compliance

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