Sympathetic Activation Does Not Affect the Cardiac and Respiratory Contribution to the Relationship between Blood Pressure and Pial Artery Pulsation Oscillations in Healthy Subjects

Pawel J Winklewski, Yurii Tkachenko, Kamila Mazur, Jacek Kot, Marcin Gruszecki, Wojciech Guminski, Krzysztof Czuszynski, Jerzy Wtorek and Andrzej F Frydrychowski

PLOS ONE, 2015, vol. 10, issue 8, 1-13

Abstract: Introduction: Using a novel method called near-infrared transillumination backscattering sounding (NIR-T/BSS) that allows for the non-invasive measurement of pial artery pulsation (cc-TQ) and subarachnoid width (sas-TQ) in humans, we assessed the influence of sympathetic activation on the cardiac and respiratory contribution to blood pressure (BP) cc-TQ oscillations in healthy subjects. Methods: The pial artery and subarachnoid width response to handgrip (HGT) and cold test (CT) were studied in 20 healthy subjects. The cc-TQ and sas-TQ were measured using NIR-T/BSS; cerebral blood flow velocity (CBFV) was measured using Doppler ultrasound of the left internal carotid artery; heart rate (HR) and beat-to-beat mean BP were recorded using a continuous finger-pulse photoplethysmography; respiratory rate (RR), minute ventilation (MV), end-tidal CO2 (EtCO2) and end-tidal O2 (EtO2) were measured using a metabolic and spirometry module of the medical monitoring system. Wavelet transform analysis was used to assess the relationship between BP and cc-TQ oscillations. Results: HGT evoked an increase in BP (+15.9%; P

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0135751

DOI: 10.1371/journal.pone.0135751

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