Factors influencing peripheral venous pressure in an experimental model

Crim, William; Buck, William

doi:10.1016/j.jvsv.2017.05.024

Cited by 20 publications

(6 citation statements)

References 20 publications

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“…A venous system nearly houses 70% of blood volume that significantly influences cardiac output by regulating blood flow back to the heart, which intensely relies on the mechanical properties of the venous wall. The compliance of the venous wall is a crucial indicator in the evaluation of cardiovascular status and in predicting venous diseases 51 . Some studies have shown that venous thrombus can increase the expression of MMP-9, a matrix-remodeling protein known for its ability to lyse both elastin and collagen.…”

Section: Resultsmentioning

confidence: 99%

“…5f ). Since the amplitudes of recorded acoustic signals were proportional to the cross-sectional area of the vein as mentioned in the perfusion test above, it could be used to estimate the vena cava volume versus transmural pressure 51 , 54 . The compliances of veins (Δ R /Δ P , R : amplitude ratio, P : pressure) were ~0.196% mmHg −1 and 0.185% mmHg −1 at ranges of 50–80 mmHg and 80–110 mmHg, respectively in our experiment.…”

Section: Resultsmentioning

confidence: 99%

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A flexible optoacoustic blood ‘stethoscope’ for noninvasive multiparametric cardiovascular monitoring

et al. 2023

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Quantitative and multiparametric blood analysis is of great clinical importance in cardiovascular disease diagnosis. Although there are various methods to extract blood information, they often require invasive procedures, lack continuity, involve bulky instruments, or have complicated testing procedures. Flexible sensors can realize on-skin assessment of several vital signals, but generally exhibit limited function to monitor blood characteristics. Here, we report a flexible optoacoustic blood ‘stethoscope’ for noninvasive, multiparametric, and continuous cardiovascular monitoring, without requiring complicated procedures. The optoacoustic blood ‘stethoscope’ features the light delivery elements to illuminate blood and the piezoelectric acoustic elements to capture light-induced acoustic waves. We show that the optoacoustic blood ‘stethoscope’ can adhere to the skin for continuous and non-invasive in-situ monitoring of multiple cardiovascular biomarkers, including hypoxia, intravascular exogenous agent concentration decay, and hemodynamics, which can be further visualized with a tailored 3D algorithm. Demonstrations on both in-vivo animal trials and human subjects highlight the optoacoustic blood ‘stethoscope’‘s potential for cardiovascular disease diagnosis and prediction.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A flexible optoacoustic blood ‘stethoscope’ for noninvasive multiparametric cardiovascular monitoring

et al. 2023

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“…7,8 A caliber less than normal as defined is associated with peripheral venous hypertension in 76% of limbs. 9…”

Section: Introductionmentioning

confidence: 99%

“…7,8 A caliber less than normal as defined is associated with peripheral venous hypertension in 76% of limbs. 9 The aim of this study is to compare the diagnostic accuracy of duplex with IVUS reference standard using the caliber method. This is a single center (three surgeons) retrospective analysis of prospectively collected data entered into an electronic medical record program.…”

Section: Introductionmentioning

confidence: 99%

Dimensional disparity between duplex and intravascular ultrasound in the assessment of iliac vein stenosis

et al. 2021

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Minimum iliac vein caliber necessary to maintain normal peripheral venous pressure can be derived by the Poiseuille equation. Duplex was compared to intravascular ultrasound (IVUS) in the assessment of iliac vein stenosis in this single center retrospective study. Parallel IVUS and duplex caliber data for common iliac vein (CIV) and external iliac vein (EIV) in 382 limbs were separately compared. One or both segments were stenotic by IVUS criteria in 213 limbs. Neither segment was stenotic by IVUS in 22 limbs. Bland–Altman analyses and Passing–Bablok linear regressions were used. Duplex calibers were dimensionally smaller than corresponding IVUS images of CIV and EIV segments in Bland–Altman comparison by a mean of 54 mm2 and 34 mm2, respectively. Passing–Bablok regression suggested the difference was due to a systematic bias and not proportional. Duplex yields a smaller cross-sectional image of CIV and EIV compared to IVUS. Duplex is not a reliable diagnostic test for iliac vein stenosis.

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“…A venous system nearly houses 70% blood volume that significantly influences cardiac output by regulating blood flow back to the heart, which intensely relies on the mechanical properties of the venous wall. The compliance of the venous wall is a crucial indicator in the evaluation of cardiovascular status and predicting venous diseases [117]. Some studies have shown that venous thrombus can increase the expression of MMP-9, a matrix remodeling protein known for its ability to lyse both elastin and collagen.…”

Section: Hypoxia and Drug Concentration Decay Tests On Animal Modelmentioning

confidence: 99%

Wearable optoacoustic sensing and imaging systems for quantitative and multiparametric blood analysis

Zheng¹

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Factors influencing peripheral venous pressure in an experimental model

Cited by 20 publications

References 20 publications

A flexible optoacoustic blood ‘stethoscope’ for noninvasive multiparametric cardiovascular monitoring

A flexible optoacoustic blood ‘stethoscope’ for noninvasive multiparametric cardiovascular monitoring

Dimensional disparity between duplex and intravascular ultrasound in the assessment of iliac vein stenosis

Wearable optoacoustic sensing and imaging systems for quantitative and multiparametric blood analysis

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