Earlier publications questioned the reliability of measurements of renal plasma flow in young infants, since the extraction ratios for para-aminohippurate (EPAH) used were those obtained in adults (1-3). It was suggested that the use of these high values for EPAH to determine renal plasma flow and filtration fraction might not be valid and could account for the high filtration fraction reported...

The ZaP Flow Z-pinch experiment at the University of Washington investigates the innovative plasma confinement concept of using sheared flows to stabilize an otherwise unstable configuration. The stabilizing effect of a sheared axial flow on the m = 1 kink instability in Z-pinches has been studied using linearized, ideal MHD theory to reveal that a sheared axial flow stabilizes the kink mode wh...

Earlier publications questioned the reliability of measurements of renal plasma flow in young infants, since the extraction ratios for para-aminohippurate (EPAH) used were those obtained in adults (1-3). It was suggested that the use of these high values for EPAH to determine renal plasma flow and filtration fraction might not be valid and could account for the high filtration fraction reported...

The rate of thrombolysis markedly decreases after a thrombosed vessel is partly recanalized and the remaining clot poses serious risk for rethrombosis. We studied in vitro how thrombolysis depends on penetration of plasma containing thrombolytic agents - 0.2 micro g/ml rt-PA or 250 IU/ml streptokinase (SK) - and the magnetic resonance contrast agent Gd-DTPA (at 1 mmol/l) into non-occlusive clot...

Although the hemodynamic effects of diuretics have been studied extensively, their effects on inner medullary blood flow remain unknown. In the present study, renal hemodynamics, including papillary plasma flow measured by the albumin accumulation technique, and associated alterations in papillary tissue solute content were determined in anesthetized, hydropenic dogs and during euvolemic diures...

1. Stressful sympathetic stimulation (cold pressor test) was applied to 18 patients with essential hypertension and 15 normotensive subjects. Intra-arterial blood pressure, heart rate, plasma adrenaline and noradrenaline concentrations as well as forearm blood flow were measured before and during the cold pressor test; tests were repeated after regional postsynaptic a,adrenoceptor blockade with...