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.

ARTERY Society guidelines for validation of non-invasive haemodynamic measurement devices: Part 1, arterial pulse wave velocity

2010 ◽  
Vol 4 (2) ◽  
pp. 34 ◽  
Author(s):  
Ian B. Wilkinson ◽  
Carmel M. McEniery ◽  
Giuseppe Schillaci ◽  
Pierre Boutouyrie ◽  
Patrick Segers ◽  
...  
Keyword(s):  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pulse Wave ◽  
Arterial Pulse ◽  
Non Invasive ◽  
Arterial Pulse Wave ◽  
Measurement Devices ◽  
Arterial Pulse Wave Velocity

Finapres arterial pulse wave analysis with Modelflow® is not a reliable non-invasive method for assessment of cardiac output

2002 ◽  
Vol 103 (2) ◽  
pp. 143-149 ◽  
Author(s):  
Jaap J. REMMEN ◽  
Wim R.M. AENGEVAEREN ◽  
Freek W.A. VERHEUGT ◽  
Tjeerd VAN DER WERF ◽  
Hans E. LUIJTEN ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Pulse Wave ◽  
Pulse Wave Analysis ◽  
Elderly Subjects ◽  
Arterial Pulse ◽  
Wave Analysis ◽  
Thermodilution Cardiac Output ◽  
Non Invasive ◽  
Arterial Pulse Wave ◽  
Invasive Method

Non-invasive continuous monitoring of cardiac output could be very useful in clinical care and in research settings, particularly in elderly subjects. We studied whether Finapres arterial pulse wave analysis with Modelflow® is a reliable non-invasive method for the assessment of cardiac output in healthy elderly subjects. We compared Modelflow® cardiac output (MFCO) with thermodilution cardiac output (TDCO) in 28 healthy subjects, aged 70±4years (mean±S.D.). TDCO was measured during right-sided heart catheterization, while MFCO was calculated with Modelflow® software from non-invasive arterial Finapres blood pressure, which was measured simultaneously. The two methods were compared using a paired t-test, by Pearson correlation, and by Bland–Altman analysis. TDCO was 6.4±1.1litres/min (mean±S.D.) and MFCO was 4.7±1.3litres/min (P<0.001). There was no significant correlation between MFCO and TDCO (r = 0.28, P = 0.13). Mean difference (bias) was -1.7litres/min (S.E.M. 0.27litres/min), with an S.D. (precision) of 1.5litres/min. The 95% limits of agreement were -4.6 to +1.1litres/min. In conclusion, non-invasive MFCO values differed significantly from and showed no significant correlation with invasively determined TDCO values in the normal range. Although simple, non-invasive and patient-friendly, the Modelflow® method is inaccurate for assessment of cardiac output without invasive calibration.

Finapres arterial pulse wave analysis with Modelflow is not a reliable non-invasive method for assessment of cardiac output

2002 ◽  
Vol 103 (2) ◽  
pp. 143 ◽  
Author(s):  
Jaap J. REMMEN ◽  
Wim R. M. AENGEVAEREN ◽  
Freek W. A. VERHEUGT ◽  
Tjeerd van der WERF ◽  
Hans E. LUIJTEN ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Pulse Wave ◽  
Pulse Wave Analysis ◽  
Arterial Pulse ◽  
Wave Analysis ◽  
Non Invasive ◽  
Arterial Pulse Wave ◽  
Invasive Method

Cardiac-Related Sympathetic Nerve Activity during Circulation with Only the Left Ventricular Assist Device

1992 ◽  
Vol 15 (1) ◽  
pp. 49-54 ◽  
Author(s):  
T. Yambe ◽  
S. Nitta ◽  
Y. Katahira ◽  
T. Sonobe ◽  
S. Naganuma ◽  
...  
Keyword(s):  
Sympathetic Nerve ◽  
Sympathetic Nerve Activity ◽  
Pulse Wave ◽  
Left Ventricular ◽  
Arterial Pulse ◽  
Assist Device ◽  
Ventricular Assist ◽  
Arterial Pulse Wave ◽  
Left Ventricular Assist ◽  
Renal Sympathetic

Circulatory maintenance with a left ventricular assist device (LVAD) alone during cardiac arrest until heart transplantation has been evaluated. To assess the effect on the autonomic nervous system, the sympathetic neurogram was analyzed by power spectrum and coherence function. LVAD were inserted between the left atrium and the descending aorta in seven adult mongrel dogs and ventricular fibrillation was induced electrically. Renal sympathetic nerve activity (RSNA) was detected by bipolar electrodes attached to the left renal sympathetic nerve. Values of squared coherence between the arterial pulse wave and RSNA were calculated. Under the condition of circulatory maintenance with only LVAD, coherence at the cardiac rhythm frequency was decreased, and coherence at the LVAD pumping rhythm frequency was increased. These results indicate that the arterial pulse wave observed during maintenance of the circulation with only LVAD contributed to the sympathetic neurogram.

scholarly journals A new method for the acquisition of arterial pulse wave using self-mixing interferometry

2014 ◽  
Vol 63 ◽  
pp. 98-104 ◽  
Author(s):  
A. Arasanz ◽  
F.J. Azcona ◽  
S. Royo ◽  
A. Jha ◽  
J. Pladellorens
Keyword(s):  
Pulse Wave ◽  
New Method ◽  
Arterial Pulse ◽  
Arterial Pulse Wave

Effect of abdominal aortic endoprostheses on arterial pulse wave velocity in an in vitro abdominal aortic flow model

2018 ◽  
Vol 39 (10) ◽  
pp. 104001 ◽  
Author(s):  
Kim van Noort ◽  
Suzanne Holewijn ◽  
Richte C L Schuurmann ◽  
Johannes T Boersen ◽  
Simon P Overeem ◽  
...  
Keyword(s):  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Flow Model ◽  
Pulse Wave ◽  
Aortic Flow ◽  
Arterial Pulse ◽  
Arterial Pulse Wave ◽  
Abdominal Aortic ◽  
Arterial Pulse Wave Velocity

Nonlinearity of Human Arterial Pulse Wave Transmission

1992 ◽  
Vol 114 (1) ◽  
pp. 10-14 ◽  
Author(s):  
C. J. H. Jones ◽  
K. H. Parker ◽  
R. Hughes ◽  
D. J. Sheridan
Keyword(s):  
Pulse Wave ◽  
Wave Transmission ◽  
Arterial Pulse ◽  
Arterial Pulse Wave

scholarly journals Abnormalities of the Arterial Pulse Wave in Young Diabetic Subjects

Circulation ◽  
1959 ◽  
Vol 20 (6) ◽  
pp. 1106-1110 ◽  
Author(s):  
HENRY LAX ◽  
ARTHUR W. FEINBERG ◽  
William Urban
Keyword(s):  
Pulse Wave ◽  
Arterial Pulse ◽  
Arterial Pulse Wave
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