Assessment of power spectral density of microvascular hemodynamics in skeletal muscles at very low and low-frequency via near-infrared diffuse optical spectroscopies
In this work, we used a hybrid time domain near-infrared spectroscopy (TD-NIRS) and diffuse correlation spectroscopy (DCS) device to retrieve hemoglobin and blood flow oscillations of skeletal muscle microvasculature. We focused on very low (VLF) and low-frequency (LF) oscillations (i.e., frequency...
| Autores: | , , , , , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Institut d'Investigació i Innovació Parc Taulí (I3PT) |
| Repositorio: | r-I3PT. Repositorio Institucional Producción Científica del Institut d'Investigació i Innovació Parc Taulí |
| OAI Identifier: | oai:i3pt.fundanetsuite.com:p4249 |
| Acceso en línea: | https://i3pt.portalinvestigacion.com/publicaciones/4249 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85176257852&doi=10.1364%2fBOE.502618&partnerID=40&md5=a346c0989b8912d73b951c627f5c9553 |
| Access Level: | acceso abierto |
| Palabra clave: | Blood Blood vessels Hemoglobin Infrared devices Intensive care units Muscle Near infrared spectroscopy Power spectral density hemoglobin Blood flow Diffuse correlation spectroscopy Haemodynamics Hemoglobin concentration Lower frequencies Microvascular Near infrared diffuse optical spectroscopy Plantar fascia Skeletal muscle Time domain Article blood flow body mass brain blood flow deoxygenation diastolic blood pressure echography endothelium fascia female forearm functional connectivity hemodynamics hemoglobin determination human human experiment infrared spectroscopy intermethod comparison laser Doppler flowmetry local field potential male microvasculature near infrared spectroscopy normal human optical spectroscopy oscillation reoxygenation signal noise ratio skeletal muscle spectroscopy sternocleidomastoid muscle systolic blood pressure thenar Hemodynamics |
| Sumario: | In this work, we used a hybrid time domain near-infrared spectroscopy (TD-NIRS) and diffuse correlation spectroscopy (DCS) device to retrieve hemoglobin and blood flow oscillations of skeletal muscle microvasculature. We focused on very low (VLF) and low-frequency (LF) oscillations (i.e., frequency lower than 0.145 Hz), that are related to myogenic, neurogenic and endothelial activities. We measured power spectral density (PSD) of blood flow and hemoglobin concentration in four muscles (thenar eminence, plantar fascia, sternocleidomastoid and forearm) of 14 healthy volunteers to highlight possible differences in microvascular hemodynamic oscillations. We observed larger PSDs for blood flow compared to hemoglobin concentration, in particular in case of distal muscles (i.e., thenar eminence and plantar fascia). Finally, we compared the PSDs measured on the thenar eminence of healthy subjects with the ones measured on a septic patient in the intensive care unit: lower power in the endothelial-dependent frequency band, and larger power in the myogenic ones were observed in the septic patient, in accordance with previous works based on laser doppler flowmetry. |
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