scholarly journals Non-invasive measurement of pulse wave in soles of rats using an RGB camera

OSA Continuum ◽  
2021 ◽  
Author(s):  
Masato Takahashi ◽  
takeshi yamaguchi ◽  
Ryo takahashi ◽  
Keiko Ogawa-Ochia ◽  
Norimichi Tsumura ◽  
...  
Keyword(s):  
Pulse Wave ◽  
Non Invasive ◽  
Invasive Measurement

NON-INVASIVE MEASUREMENT OF HEART-FEMORAL PULSE WAVE VELOCITY

2018 ◽  
Vol 36 (Supplement 1) ◽  
pp. e224
Author(s):  
C. Magistri ◽  
F.U.S. Mattace Raso ◽  
F. Battista ◽  
F. Anastasio ◽  
G. Pucci
Keyword(s):  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pulse Wave ◽  
Non Invasive ◽  
Invasive Measurement

Detection of Arteries by Using Diffuse Reflectance Photoplethysmography

2010 ◽  
Author(s):  
Shinichiro Ota ◽  
Toshitaka Yasuda ◽  
Takashi Saito
Keyword(s):  
Light Scattering ◽  
Diffuse Reflectance ◽  
Pulse Wave ◽  
Arterial Pulse ◽  
Measurement Condition ◽  
Non Invasive ◽  
Arterial Pulse Wave ◽  
Light Scattering Intensity ◽  
The Difference ◽  
Invasive Measurement

Non-invasive measurement of the arterial pulse wave can be carried out by means of an optical sensor placed at the center of the artery. In this paper, we explore the possibility of using diffuse reflectance photoplethysmography (PPG) for the detection of arteries, a method that allows for the timely detection of changes in the blood pressure. It is believed that the light scattering intensity is affected by the presence of veins in the light path. The purpose of the present study is to elucidate the influence of veins on the accuracy of PPG. In this study, we used light scattering measurements to investigate the difference observed in the performance of PPG (wavelength: 810 and 530 nm) due to the presence of veins. On the basis of these results, we concluded that PPG at a wavelength of 810 nm is more susceptible to the presence of veins than at 530 nm. However, the influence of veins can be reduced by the measurement condition that surrounding veins are being crushed at a wavelength of 810 nm.

Limitations and pitfalls of non-invasive measurement of arterial pressure wave reflections and pulse wave velocity

2009 ◽  
Vol 3 (2) ◽  
pp. 79 ◽  
Author(s):  
Patrick Segers ◽  
Jan Kips ◽  
Bram Trachet ◽  
Abigail Swillens ◽  
Sebastian Vermeersch ◽  
...  
Keyword(s):  
Arterial Pressure ◽  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pressure Wave ◽  
Pulse Wave ◽  
Wave Reflections ◽  
Non Invasive ◽  
Invasive Measurement

scholarly journals The COSEVAST Study: Unravelling the role of Arterial Stiffness in COVID-19 Disease severity

2020 ◽  
Author(s):  
Sanjeev Kumar ◽  
Neeraj Kumar ◽  
Abhyuday Kumar ◽  
Divendu Bhushan ◽  
Amarjeet Kumar ◽  
...  
Keyword(s):  
Arterial Stiffness ◽  
Disease Severity ◽  
Pulse Wave ◽  
Cardiovascular Complications ◽  
Endothelial Damage ◽  
Specific Marker ◽  
Non Invasive ◽  
Independent Marker ◽  
Invasive Measurement

AbstractBackgroundBased on the detailed review of available research and case studies reported in reputed international journals, it can be concluded that endothelial damage (En-dotheliitis) both in small and large arteries may be an important factor of morbidity and mortality in COVID-19 patients. Arterial stiffness due to Endothelial Dysfunction has been established as an independent and specific marker of various chronic cardiovascular diseases.ObjectiveOur objective was to examine functional impairment of the arteries in COVID-19 disease and establish the non-invasive measurement of Arterial Stiffness as an independent marker of disease severity.MethodsWe recorded the Arterial Stiffness of 23 Mild, 21 Moderate and 20 Severe COVID-19 patients grouped on latest NIH severity criteria. We observed Arterial Stiffness of COVID-19 patients with standard parameters like non-invasive Carotid-Femoral Pulse Wave velocity (cfPWV), Age-Normalized increase in cfPWV (ANI_cfPWV).ResultsModerate and Severe COVID-19 patients have extremely elevated arterial stiffness than Mild patients. In Mild patients, cfPWV (829.1 ± 139.2 cm/s) was extremely significantly lower than both Moderate (1067 ± 152.5 cm/s, P< 0.0001) and Severe (1416 ± 253.9 cm/s, P < 0.0001) patients. ANI_cfPWV in Moderate and Severe patients was significantly higher than Mild patients. (Mild: 101.2 ± 126.1 cm/s; Moderate: 279 ± 114.4 cm/s; Severe: 580.1 ± 216.4 cm/s; intergroup P <0.0001). Conclusion: Our findings strongly suggest that arterial stiffness can be an independent and accurate marker for objective risk stratification and therapeutic alleviation of the acute cardiovascular complications like MODS in COVID-19.

NON-INVASIVE MEASUREMENT OF AORTIC PULSE WAVE VELOCITY

2018 ◽  
Vol 36 (Supplement 1) ◽  
pp. e199
Author(s):  
A. Grillo ◽  
F. Moretti ◽  
M. Rovina ◽  
C. Baldi ◽  
L. Salvi ◽  
...  
Keyword(s):  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pulse Wave ◽  
Aortic Pulse Wave Velocity ◽  
Non Invasive ◽  
Invasive Measurement

scholarly journals Non-invasive measurement of local pulse pressure by pulse wave-based ultrasound manometry (PWUM)

2011 ◽  
Vol 32 (10) ◽  
pp. 1653-1662 ◽  
Author(s):  
J Vappou ◽  
J Luo ◽  
K Okajima ◽  
M Di Tullio ◽  
E E Konofagou
Keyword(s):  
Pulse Pressure ◽  
Pulse Wave ◽  
Non Invasive ◽  
Invasive Measurement
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