A novel hybrid numerical scheme with built-in hyperviscosity has been developed to address the accuracy and numerical instability in numerical simulation of isotropic compressible turbulence in a periodic domain at high turbulent Mach number. The hybrid scheme utilizes a 7th-order WENO (Weighted Essentially Non-Oscillatory) scheme for highly compressive regions (i.e., shocklet regions) and an 8...

The vascular complications of scleroderma have previously been attributed to the progressive obliteration of small vessels. Our study was carried out to determine whether abnormalities of blood viscosity occur in this disease, thereby contributing to the ischaemic process. Blood viscosity was measured in 20 patients using a rotational viscometer. At a high rate of shear, blood hyperviscosity wa...

BACKGROUND AND OBJECTIVES Hyperleukocytosis (> 100 x 10(9)/L) is an uncommon presentation of chronic leukemias and it can present clinical symptoms of hyperviscosity syndrome. Hearing loss and blindness rarely occurs in patients with leukemia; however, it can be strong association with hyper-viscosity syndrome. The purpose of this paper is to report a case of acute hearing loss as the initial m...

BACKGROUND Adults with cyanotic congenital heart disease and elevated hematocrit levels are often phlebotomized because of an assumed risk of cerebral arterial thrombotic stroke. Whether a relation exists between hematocrit level, symptomatic erythrocytosis (hyperviscosity), and stroke remains to be established in this patient population. METHODS AND RESULTS Accordingly, 112 cyanotic patients...

Waldenstrom's macroglobulinaemia is the most commonly reported subtype of lymphoplasmacytic lymphoma (LPL); it is characterised by IgM secretion. Neurological complications are common usually as a result of hyperviscosity. In rare cases, cells can infiltrate the central nervous system; this is known as Bing-Neel syndrome. We report the case of a 57-year-old male with lymphoplasmacytic lymphoma ...

Hyperleukocytosis (white blood cell count, >100×109/l), an uncommon presentation of leukemia, is associated with an increased risk of early mortality. It may present with a variety of symptoms secondary to leukostasis, a syndrome caused by the sludging of circulating leukemic blasts in the microvasculature. Adequate measures for managing this medical emergency include hydration, cytoreduction, ...

Key content Lipid and triglyceride levels increase in pregnancy do not pose problems for most women. However, pregnancy-specific factors genetic aberrations, especially mutations, may result supraphysiological hypercholesterolaemia (HC) severe hypertriglyceridaemia (sHTG). HC sHTG are associated with complications pregnancy, including acute pancreatitis, hyperviscosity syndrome pre-eclampsia. A...

Total protein concentration in the serum of a patient with hyperviscosity syndrome differed as measured by the biuret procedure in the DuPont aca (80 g/L) and the SMA 12/60 (105 g/L), owing to viscosity-dependent errors with the aca sampling system; the magnitude depended on sample temperature and volume of sample aspirated. This kind of error was not observed with the SMA 12/60 and was far les...