Results 301 to 310 of about 850,668 (354)
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Pulmonary vascular resistance and vascular transmural gradient
Journal of Applied Physiology, 1960Perfusion studies were made on vascular beds of isolated dog lungs. Submerged, gas-free, fluid-distended lobes served for studies of resistance versus transmural pressure in a technique that abolished gravitational effects. Air-distended lobes with varying degrees of pulmonary edema were used to display the transmural gradient differences produced by ...
George W. Wright, Thomas C. Lloyd
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Estrogen and vascular resistance
Current Opinion in Endocrinology & Diabetes, 1999Male sex and menopause are independent risk factors for cardiovascular disease. Estrogens bind to vascular receptors, including the novel estrogen receptor-β and membrane-bound receptors, and they contribute to vascular resistance through several mechanisms.
Matthias Barton, Thomas F. Lüscher
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Mechanotransduction and Vascular Resistance [PDF]
, 2014 Mechanotransduction is the process by which any cell transduces (converts) a mechanical signal into chemical cues. The vessel wall is permanently sheared by the moving blood particles as well as stretched and compressed by the pressure applied by the blood.
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Resistance to Flow in Vascular Beds [PDF]
Nature, 1958 DR. S. D. CARLILL1 has attacked the standard concept of resistance to flow (R) as the ratio of the driving force (the pressure drop P across the bed) to the flow F, and advocates that the ‘dynamic resistance’, that is, the differential dP/dF be substituted. His argument seems to assume what he is trying to prove.
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Renal washout and vascular resistances
European Journal of Nuclear Medicine, 1987Evaluation of the vascular transit through a transplanted kidney depends on the convolution of the arterial bolus in the renal vasculature. In order to stress the importance of the renal artery, an example where a moderate stenosis resembled allograft rejection is given.
Ole Munck +3 more
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Vascular resistance in splenic perfusion
Journal of Surgical Research, 1968Abstract Eighteen pig spleens have been perfused ex vivo, 9 each with heterologous and homologous blood. Angiographic evidence of spasm in the main splenic arteries probably caused the temporary early resistance to perfusion, with both homologous and heterologous blood.
A.R. Moore +5 more
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Pulmonary Vascular Resistance in Emphysema
Chest, 1994To assess the hemodynamic effects of pulmonary microvasculature disruption in emphysema, we examined resting pulmonary hemodynamics and lung function in 12 carefully identified patients with type A chronic obstructive pulmonary disease. Individuals with respiratory muscle weakness and intercurrent infection were excluded.
Yale Enson +3 more
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HYPERTENSION AND COMPONENTS OF VASCULAR RESISTANCE
Clinical and Experimental Pharmacology and Physiology, 1991SUMMARY1. In renal wrap hypertension in the rabbit and in essential hypertension in humans, non‐autonomic components of resistance are the major factors contributing to elevated blood pressure.2. The central nervous system plays an important role in moment to moment blood pressure control but is not responsible for maintenance of elevated pressure in ...
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2021
The focus of this chapter is on understanding the complexity associated with the resistance to flow through the pulmonary circulation. Pulmonary vascular resistance (PVR) is a variable that reflects the physical size (diameter and length) of the vascular tree at any moment in time.
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The focus of this chapter is on understanding the complexity associated with the resistance to flow through the pulmonary circulation. Pulmonary vascular resistance (PVR) is a variable that reflects the physical size (diameter and length) of the vascular tree at any moment in time.
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An Index of Peripheral Vascular Resistance
Journal of Hypertension, 1985An index of peripheral vascular resistance, derived from directly measured arterial pressure, has been developed and tested in an animal model. Assuming a mono-exponential character for diastole, the time constant for direct arterial pressure decay in the central aorta was obtained with high-fidelity recording techniques from six anaesthetized dogs ...
A. D. Goldberg +3 more
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