Blood-pressure-induced oscillations of cerebral hemodynamics during hemodialysis

Thao Pham; Giles Blaney; Angelo Sassaroli; Cristianne Fernandez; Arushi Agarwal; Daniel Weiner; Sergio Fantini

doi:10.1117/12.2577674

9 March 2021 Blood-pressure-induced oscillations of cerebral hemodynamics during hemodialysis

Thao Pham, Giles Blaney, Angelo Sassaroli, Cristianne Fernandez, Arushi Agarwal, Daniel Weiner, Sergio Fantini

Proceedings Volume 11629, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics; 1162922 (2021) https://doi.org/10.1117/12.2577674
Event: SPIE BiOS, 2021, Online Only

Abstract

In a study on one patient during hemodialysis, we used near-infrared spectroscopy (NIRS) to measure coherent oscillations of cerebral concentrations of oxyhemoglobin ([HbO₂]), deoxyhemoglobin ([Hb]), and total-hemoglobin ([HbT]) induced by systemic oscillations in mean arterial pressure (MAP) at a frequency of 0.07 Hz. During hemodialysis, we observed that the phase of [Hb] versus [HbO₂] becomes less negative, whereas the phase of [HbT] versus MAP becomes more negative. By applying a quantitative hemodynamic model, we assign these phase changes to an increase in venous blood transit time and a less effective cerebral autoregulation during the hemodialysis process.

Conference Presentation

Citation Download Citation

Thao Pham, Giles Blaney, Angelo Sassaroli, Cristianne Fernandez, Arushi Agarwal, Daniel Weiner, and Sergio Fantini "Blood-pressure-induced oscillations of cerebral hemodynamics during hemodialysis", Proc. SPIE 11629, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics, 1162922 (9 March 2021); https://doi.org/10.1117/12.2577674

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available