This study investigated the hemodynamic properties of the plantar venous plexus (PVP), a peripheral venous pump in the human foot, with Doppler ultrasound. We investigated how different ways of introducing mechanical changes vary in effectiveness of displacing blood volume from the PVP. The contribution of the PVP was analyzed during both natural and device-elicited compressions. Natural compre...

BACKGROUND AND OBJECTIVES To assess the influence of risk factors on the rates and kinetics of peripheral vein phlebitis (PVP) development and its theoretical influence in absolute PVP reduction after catheter replacement. METHODS All peripheral short intravenous catheters inserted during one month were included (1201 catheters and 967 patients). PVP risk factors were assessed by a Cox propor...

In conscious rats with near-malignant phases of DOCA-salt (DS) hypertension, hemodynamics were studied with microspheres before and after administration of a vasopressin (VP) vasopressor antagonist in relation to plasma VP levels (pVP). Compared to the controls, the DS rats showed significant elevations in mean arterial pressure (MAP), total vascular resistance (TVR), and pVP, and a flow redist...

Zinc ferrite nanocrystals were prepared from an aqueous solution containing metal nitrates and various of concentrations of poly(vinyl pyrrolidone) (PVP), i.e., 0, 15, 40, and 55 g/L, as a capping agent. To stabilize the particles, they were thermally treated at 873 K, as an optimum calcination temperature. The behaviors of the polymeric precursor were analyzed by use of simultaneous thermo-gra...

Intravenous infusion of 500 ml of 6% polyvinylpyrrolidone (PVP, average molecular weight 40,000) in isotonic saline solution daily for 2 days induced prompt and significant reductions in serum cholesterol and triglyceride concentrations in eight hyperlipidemic patients. Mean maximal decrements in serum cholesterol and triglyceride were 29% and 28% below control values, respectively, occurring 5...

Oral mucositis (OM) is a common and often dose-limiting side effect of cancer therapy. Povidone iodine (PVP-I) formulations have been shown to decrease the incidence and severity of OM, but the relevance of these findings remains unclear. The objective of the present study was to review evidence for the use of PVP-I for OM management. An algorithm identified relevant articles published online, ...

This paper discusses the implementation of the new OpenMP standard for Fortran shared memory parallel processing in Programming Environment Release 3.1 for Cray PVP systems. Similarities and differences between OpenMP and Autotasking compiler directives, environment variables and other control mechanisms are discussed. It becomes clear that OpenMP provides equivalents for all of the essential f...

The Polyvinylpyrrolidone (PVP) / Poly (L-lactic acid) (PLLA) ultrafine blend fibers have been prepared for the first time by electrospinning. Trichloromethane was found to be the co-solvent for electrospinning. The PVP/PLLA blend solutions in various ratios were studied for electrospinning into ultrafine fibers. The morphology of the fibers was shown by scanning electron microscope (SEM). It wa...

In this study silver/poly vinyl alcohol (PVA) and silver/poly vinyl pyrrolidone (PVP) Nanocomposites were prepared via reduction of silver salt by employing DMF (N, N`- dimethyl formamide) as a reducing agent. Effects of protective agents such as PVA and PVP were also described here. We show that the acidic pH of PVP solution also affects the interaction between protective agents and silver nan...