Results 251 to 260 of about 86,490 (305)
Some of the next articles are maybe not open access.
Effect of Venous Air Embolization on Pulmonary Microvascular Protein Permeability
Microcirculation, 2004ABSTRACTObjective:An increase in pulmonary lymph flow and lymph protein clearance following pulmonary air embolization has been interpreted as evidence of increased pulmonary microvascular permeability. The authors hypothesized that air embolization does not alter the pulmonary microvascular permeability to protein and that this could be demonstrated ...
Randolph H, Stewart +5 more
openaire +2 more sources
Venous air emboli in sheep: reversible increase in lung microvascular permeability
Journal of Applied Physiology, 1981We studied the effects of continuous intravenous air embolization on lung fluid balance in unanesthetized sheep. Following a 2-h base line, we infused 300-micrometers-diam air bubbles into the pulmonary artery at a rate sufficient to increase pulmonary vascular resistance by 60–300% and for periods of 0.25–3 h. Air emboli produced a dose- and duration-
K, Ohkuda +3 more
openaire +2 more sources
Effects of elevated venous pressure on capillary permeability in cat hindlimbs
American Journal of Physiology-Heart and Circulatory Physiology, 1989We investigated the effects of elevated venous pressure, Pv, (up to 140 mmHg) on the solvent drag reflection coefficient, sigma f, for protein and on the capillary filtration coefficient, CFC, in the isolated cat hindlimb perfused at constant flow. The perfusate contained 30% cat plasma and the remainder was a dialyzed albumin-electrolyte mixture. Cat
M B, Wolf, L P, Porter, P D, Watson
openaire +2 more sources
Endothelium, 2005
Venoarterial communication is a potential short-loop signaling pathway for the local control of uteroplacental perfusion. As this pathway is permeability-dependent, this study investigated the effects of molecular weight, gestation, vascular endothelial growth factor (VEGF), wall tension, and constriction on solute flux across the venous wall ...
G, Celia, G, Osol
openaire +2 more sources
Venoarterial communication is a potential short-loop signaling pathway for the local control of uteroplacental perfusion. As this pathway is permeability-dependent, this study investigated the effects of molecular weight, gestation, vascular endothelial growth factor (VEGF), wall tension, and constriction on solute flux across the venous wall ...
G, Celia, G, Osol
openaire +2 more sources
Venous occlusion pressure and vascular permeability in the dog lung after air embolization
Journal of Applied Physiology, 1988Pulmonary edema has frequently been associated with air embolization of the lung. In the present study the hemodynamic effects of air emboli (AE) were studied in the isolated mechanically ventilated canine right lower lung lobe (RLL), pump perfused at a constant blood flow. Air was infused via the pulmonary artery (n = 7) at 0.6 ml/min until pulmonary
J E, Hall, W F, Hofman, I C, Ehrhart
openaire +2 more sources
Effects of ANP on venous pressures and microvascular protein permeability in dog forelimb
American Journal of Physiology-Heart and Circulatory Physiology, 1989Intravenous administration of alpha-atrial natriuretic peptide (ANP) produces a decrease in arterial blood pressure due to a decrease in cardiac output. The mechanism of the decrease in cardiac output is unknown but has been suggested to result from transcapillary fluid efflux caused by venoconstriction and/or increased permeability of the ...
D, Eliades +4 more
openaire +2 more sources
Angiology, 1990
The VSC (vacuum suction chamber) device, a new system to evaluate local capillary permeability, was used with laser Doppler flowmetry to study varia tions of permeability and of the microcirculation in 10 normal subjects; in 22 patients with moderate, superficial venous hypertension; and in 12 patients with postphlebitic limbs and severe venous ...
G V, Belcaro, R, Grimaldi, G, Guidi
openaire +2 more sources
The VSC (vacuum suction chamber) device, a new system to evaluate local capillary permeability, was used with laser Doppler flowmetry to study varia tions of permeability and of the microcirculation in 10 normal subjects; in 22 patients with moderate, superficial venous hypertension; and in 12 patients with postphlebitic limbs and severe venous ...
G V, Belcaro, R, Grimaldi, G, Guidi
openaire +2 more sources
Capillary permeability measured by bolus injection, residue and venous detection
Acta Physiologica Scandinavica, 1979AbstractKinetic analysis of residue and outflow curves of y‐emitting indicators such as chromium‐51‐EDTA and iodide‐131‐thalamate from skeletal muscle gives the possibility to determine the extraction fraction and the plasma flow, and from these two values the capillary diffusion capacity can be calculated (Sejrsen 1970, preliminary report).
openaire +2 more sources
Medical and Biological Engineering and Computing, 1998
The dependence of uraemic solute clearance on the hydraulic and diffusive permeability index of an AN-69 capillary haemofilter is investigated during the treatment of patients with continuous arterio-venous haemodiafiltration (CAVHD). A mathematical model is presented to calculate solute clearance and the hydraulic and diffusive permeability index ...
Akcahuseyin, E (Emin) +4 more
openaire +3 more sources
The dependence of uraemic solute clearance on the hydraulic and diffusive permeability index of an AN-69 capillary haemofilter is investigated during the treatment of patients with continuous arterio-venous haemodiafiltration (CAVHD). A mathematical model is presented to calculate solute clearance and the hydraulic and diffusive permeability index ...
Akcahuseyin, E (Emin) +4 more
openaire +3 more sources