Search results for "Mean cerebral blood flow velocity"

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Dynamic cerebrovascular autoregulation in patients prone to postural syncope: Comparison of techniques assessing the autoregulation index from sponta…

2021

Abstract Three approaches to the assessment of cerebrovascular autoregulation (CA) via the computation of the autoregulation index (ARI) from spontaneous variability of mean arterial pressure (MAP) and mean cerebral blood flow velocity (MCBFV) were applied: 1) a time domain method (TDM); 2) a nonparametric method (nonPM); 3) a parametric method (PM). Performances were tested over matched and surrogate unmatched pairs. Data were analyzed at supine resting (REST) and during the early phase of 60° head-up tilt (TILT) in 13 subjects with previous history of postural syncope (SYNC, age: 28 ± 9 yrs.; 5 males) and 13 control individuals (noSYNC, age: 27 ± 8 yrs.; 5 males). Analysis was completed b…

AdultMalemedicine.medical_specialtyMean arterial pressureSupine positionBlood PressureSyncopeCellular and Molecular NeuroscienceOrthostatic vital signsYoung AdultInternal medicinemedicineHeart rate variabilityHomeostasisHumansAutonomic nervous systemAutoregulationMean cerebral blood flow velocityHeart rate variabilityArterial pressureEndocrine and Autonomic Systemsbusiness.industryHead-up tiltAutonomic nervous systemBlood pressureCerebral blood flowCerebrovascular CirculationCardiovascular controlCardiologyNeurology (clinical)businessBlood Flow Velocity
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