Results 321 to 330 of about 4,446,507 (382)

Renal washout and vascular resistances

European Journal of Nuclear Medicine, 1987
Evaluation 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, Steen Levin Nielsen, Kjeld Hvid-Jacobsen, Henrik S. Thomsen   +3 more
openaire   +3 more sources

Pulmonary Vascular Resistance in Emphysema

Chest, 1994
To 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, John A. Wood, Paul F. Lennon, Larry L. Schulman   +3 more
openaire   +3 more sources

HYPERTENSION AND COMPONENTS OF VASCULAR RESISTANCE

Clinical and Experimental Pharmacology and Physiology, 1991
SUMMARY1. 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 ...
openaire   +4 more sources

Uric acid induces endothelial dysfunction by vascular insulin resistance associated with the impairment of nitric oxide synthesis

The FASEB Journal, 2014
Endothelial dysfunction is defined as impairment of the balance between endothelium‐dependent vasodilation and constriction. Despite evidence of uric acid‐induced endothelial dysfunction, a relationship with insulin resistance has not been clearly ...
You-Jin Choi, Yujin Yoon, Kang‐Yo Lee, T. T. Hien, Keon Wook Kang, Kyong-Cheol Kim, Jeewoo Lee, Moo-Yeol Lee, Seung Mi Lee, D. Kang, Byung-Hoon Lee   +10 more
semanticscholar   +1 more source

An Index of Peripheral Vascular Resistance

Journal of Hypertension, 1985
An 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, Topham Ws, J. T. Walsh, Sudhir Ken Mehta   +3 more
openaire   +3 more sources

Pulmonary Vascular Resistance

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.
openaire   +2 more sources

Peripheral pulmonary vascular resistance

Journal of Applied Physiology, 1993
The pressure-flow relationship has been studied in a peripheral portion of the lung vasculature in anesthetized dogs with use of a double-lumen catheter wedged in a distal pulmonary artery. One lumen was used to infuse mixed venous blood in the wedged area and the other to measure the corresponding perfusion pressure. Flow ranged from 0 to 9.2 ml/min,
C. Saunier, François Chabot, F. Schrijen   +2 more
openaire   +3 more sources

Noninvasive Estimation of Pulmonary Vascular Resistance in Pulmonary Hypertension

Echocardiography, 2009
Background: Determination of pulmonary vascular resistance (PVR) in patients with suspected or known pulmonary hypertension (PH) requires right heart catheterization.
N. Rajagopalan, M. Simon, M. Suffoletto, Hemal Shah, K. Edelman, M. Mathier, A. López-Candales   +6 more
semanticscholar   +1 more source

Insulin resistance and vascular function

Journal of Diabetes and its Complications, 2002
It has become clear that amongst its many actions insulin is also a vasoactive hormone. Its effect to cause endothelial-nitric oxide-dependent vasodilation is physiologic and dose-dependent. Recent data suggest that insulin's metabolic and vascular actions are closely linked.
openaire   +2 more sources

Renal Vascular Resistance in Essential Hypertension

Nephron, 1998
letter
B.D. Delic, Boris Brkljačić, V. Bozikov, Krešimir Galešić   +3 more
openaire   +4 more sources