Results 81 to 90 of about 58,651 (301)

Modeling of cardiovascular system for evaluation of vascular reactivity estimation techniques based on reactive hyperemia.

Universidad y Salud, 2018
Introduction: The Evaluation of Vascular reactivity (VR) is done by the hyperemic response after ischemia produced by arterial occlusion. There are VR measurement techniques that allow the evaluation of vascular function at lower cost and without ...
Diana Carolina Arboleda-Gómez, Jenny Kateryne Aristizábal-Nieto, Alher Mauricio Hernández-Valdivieso   +2 more
doaj   +1 more source

Dependence of reactive hyperemia in skeletal muscle on oxygen tension

, 1977
Red blood cell velocity was measured in capillaries of the rabbit tenuissimus muscle during exposure to a low-oxygen-tension (PO2 = 5 mmHg) and a high-oxygen-tension (room-air PO2 = 150 mmHg) suffusion solution. Control capillary red blood cell velocity
K. E. Arfors, R. F. Tuma, L. Lindbom
core   +1 more source

Acute Effects of Smoking and Vaping on Markers of Vascular Function via Quantitative MRI

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background E‐cigarettes contribute to endothelial dysfunction, a known cause of systemic atherosclerotic disease that cannot be adequately characterized by a single physiological parameter measured at a single vascular bed. Purpose/Hypothesis Quantify and compare acute effects of smoking or vaping with tobacco cigarettes (t‐cigs), nicotinized ...
Marianne Nabbout, Mahdie Hosseini, Harris Quach, Michael C. Langham, Alessandra S. Caporale, Wensheng Guo, Kathryn Jaroszynski, Frank T. Leone, Andrew A. Strasser, Felix W. Wehrli   +9 more
wiley   +1 more source

Differences in reactive hyperemia between the intestinal mucosa and muscularis

, 1984
In a previous study of regional intestinal blood flow by laser-Doppler velocimetry, we noted that the mucosa displayed reactive hyperemia following arterial occlusion but that the muscularis did not.
A. P. Shepherd, G. L. Riedel
core   +1 more source

Oscillatory Lower Body Negative Pressure Impairs Working Memory Task-related Functional Hyperemia in Healthy Volunteers

, 2017
Neurovascular coupling (NVC) describes the link between an increase in task-related neural activity and increased cerebral blood flow denoted functional hyperemia. We previously showed induced cerebral blood flow oscillations
Visintainer, Paul, Stewart, Julian, Terilli, C, Merchant, Sana, Medow, Marvin   +4 more
core   +3 more sources

Coronary Reactive Hyperemia [PDF]

, 2007
Introduction: The mechanism of post ischemic reactive hyperemia is still unknown but now thought to be multifactorial and perhaps involving purinergic signalling.
Olivecrona, Göran
core  

Intracoronary ECG ST-segment shift remission time during reactive coronary hyperemia (tau-icECG): a new approach to assess hemodynamic coronary stenosis severity

, 2023
Coronary pressure-derived fractional flow reserve (FFR) measurements are recommended for hemodynamic coronary stenosis assessment. Given temporary paralysis of the coronary microcirculation during hyperemia, pressure is, in theory, directly related to ...
Wildhaber, Reto, Seiler, Christian, Bigler, Marius Reto, Waldmann, Frédéric, Kieninger-Graefitsch, Andrea   +4 more
core   +1 more source

Metabolic Syndrome and Dementia Risk in Older Adults: A Narrative Review

The Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT Dementia is a major global health issue in aging societies. Metabolic syndrome (MetS), a cluster of metabolic abnormalities, has been proposed as a modifiable risk factor for dementia, although existing evidence remains inconsistent. This review examined recent studies on the association between MetS and dementia risk in older adults.
Hyojin Park, Mallika Chuansangeam, Yuan‐Han Yang   +2 more
wiley   +1 more source

Arrhythmia prevention protocol during papaverine administration for invasive coronary functional assessment

Frontiers in Cardiovascular Medicine
BackgroundAccurate assessment of coronary physiology through invasive functional testing is critical for the effective management of chronic coronary syndromes. The induction of maximal and sustained coronary hyperemia is essential for obtaining reliable
Dobrin Vassilev, Dobrin Vassilev, Niya Mileva, Niya Mileva, Gavril Stoev, Ilter Pazardzhykly, Panayot Panayotov, Panayot Panayotov, Gianluca Rigatelli, Valery Gelev   +9 more
doaj   +1 more source

Relative contribution of fat, protein, carbohydrate, and ethanol to intestinal hyperemia

, 1982
The relative contribution of dietary fat, protein, carbohydrate, and ethanol to postprandial intestinal hyperemia was assessed by comparing the vascular and metabolic effects of luminal placement of various solutions prepared from standard high -fat ...
H. Siregar, C. C. Chou
core   +1 more source