Results 101 to 110 of about 34,853 (259)

Phonocardiography based pulse wave velocity system for non-occlusive assessment of arterial stiffness

open access: yesFrontiers in Cardiovascular Medicine
Arterial stiffness is strongly associated with vascular aging and pathology and can be assessed in many ways. Existing devices for measuring central arterial stiffness, such as carotid-femoral pulse wave velocity (PWV), are limited by high costs and the ...
T. Corina Margain   +3 more
doaj   +1 more source

Optoelectronic plethysmography in clinical practice and research: a review [PDF]

open access: yes, 2017
Background: Optoelectronic plethysmography (OEP) is a non-invasive motion capture method to measure chest wall movements and estimate lung volumes.
Silvestri, Sergio   +29 more
core   +1 more source

Quantifying skin microvascular function responses to distinct forms of heat stress in humans using optical coherence tomography

open access: yesExperimental Physiology, EarlyView.
Abstract Optical coherence tomography (OCT) enables visualization and quantification of the cutaneous microvasculature, yet no study has compared responses to distinct forms of heating in humans. We hypothesized that local skin heating (LH) would evoke larger responses in microvascular diameter, velocity, flow and density than passive whole‐body ...
Kristanti W. Wigati   +5 more
wiley   +1 more source

Ischemia of the Eye on the Background of Primary Hypothyroidism and Primary Thyrotoxicosis

open access: yesOftalʹmologiâ, 2019
Purpose: to study the features of the blood filling of the eye in patients with primary untreated hypothyroidism and primary untreated thyrotoxicosis by plethysmography. Materials and methods.
V. G. Likhvantseva, E. V. Korosteleva
doaj   +1 more source

Air plethysmography [PDF]

open access: yes, 2005
Hintergrund: Ziel der vorliegenden Arbeit war es, die im deutschsprachigen Raum nicht gebräuchliche Methode der Luftplethysmographie vorzustellen und auf ihren Stellenwert in Bezug zur Diagnostik der Chronisch Venösen Insuffizienz hin zu beleuchten ...
Dörr, Dominik
core  

Microvascular endothelial function is blunted in postmenopausal females with frequent hot flushes

open access: yesExperimental Physiology, EarlyView.
Abstract Hot flushes of menopause are associated with elevated blood pressure (BP) and diminished macrovascular endothelial function, an initiating factor in the onset of atherosclerosis. Whether microvascular endothelial function is impaired in females with hot flushes, however, remains unknown.
William Stokes   +9 more
wiley   +1 more source

Toe digit pulsation measurement by impedance plethysmography in miniaturized devices: An early feasibility test

open access: yesJournal of Electrical Bioimpedance
This early feasibility test explores impedance plethysmography (IPG) for detecting toe pulse waves using a setup suited for miniaturized devices. Conventional tests often miss micro-circulatory impairment, which is critical for wound healing and limb ...
Kalvøy Håvard   +2 more
doaj   +1 more source

Early‐stage 2K1C renovascular hypertension does not increase global MHC‐II or F4/80 abundance in the non‐clipped kidney but reveals focal F4/80+ induction

open access: yesExperimental Physiology, EarlyView.
Abstract The two‐kidney, one‐clip (2K1C) model produces renovascular hypertension. The effects on the clipped kidney (CK) are well described, while the non‐clipped kidney (NCK) is used as a model to evaluate the effects of high blood pressure. Although most of these effects have been described at later stages of 2K1C hypertension, it remains unclear ...
Pilar Cárdenas   +11 more
wiley   +1 more source

Effect of an acute exercise bout on alveolar–capillary membrane permeability and interstitial fluid accumulation in COPD

open access: yesExperimental Physiology, EarlyView.
Abstract Exertional dyspnoea is a debilitating symptom in chronic obstructive pulmonary disease (COPD) and often persists after the cessation of exercise. The underlying mechanisms are not fully understood, and a potential contributing factor that has not previously been investigated is alveolar–capillary membrane breaching with extravasation of fluid ...
Rie Skovly Thomsen   +9 more
wiley   +1 more source

Classification of Respiratory Diseases

open access: yesCurrent Directions in Biomedical Engineering
Contactless measurement methods offer a novel approach to assessing respiratory parameters. This study investigates the feasibility of classifying chronic obstructive pulmonary disease, asthma, and healthy individuals using depth-based plethysmography ...
Wichum Felix   +2 more
doaj   +1 more source

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