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Price: EUR 185.00Authors: Glöckner, W.M. | Sieberth, H.G. | Schmid-Schönbein, H.
Article Type: Research Article
Abstract: Cascade filtration (CF) is a double membrane filtering procedure, where the plasma, separated in the first step from blood, is simultanously pumped on a second membrane with lower cut-off, thus retaining the larger plasma molecules like IgM. The lower molecular plasma fractions containing the albumin, are reinfused to the patient. By this way the IgM level was reduced to 44% after each CF, while IgG was lowered only to 73% and albumin to 80% of its initial value. The plasma viscosity accordingly dropped from 1.77 to 1.27 m Pa·s. This special kind of plasmapheresis was done without any plasma protein …substitution. Show more
Keywords: Cascade filtration, plasma exchange, plasmapheresis, hyperviscosity, paraproteinaemia, Waldenstrom’s macroglobulinemia
DOI: 10.3233/CH-1985-5110
Citation: Clinical Hemorheology and Microcirculation, vol. 5, no. 1, pp. 71-78, 1985
Authors: von Rhede van der Kloot, E.J.H. | Jacobs, M.J.H.M. | Weber, H. | Lemmens, H.A.J.
Article Type: Research Article
Abstract: Fourteen patients with severe Raynaud’s phenomenon, 7 with primary Raynaud’s phenomenon and 7 with secondary Raynaud’s phenomenon based on progressive systemic sclerosis, were treated with plasma filtration. Haemorheological parameters were determined before and after treatment. Eight patients (6 patients with secondary Raynaud’s phenomenon) responded very well. The frequency of Raynaud’s phenomenon and cold induced attacks were strongly reduced The skin which was tough and tense before filtration became supple and pliable, so that patients could use their extremities more easily. Also their facial expression became livelier. Fingertip ulcerations showed increased healing tendency. Elevated red blood cell aggregation and plasma …viscosity were markedly reduced after plasma filtration. Show more
Keywords: Plasmafiltration, Raynaud’s phenomenon, Progressive systemic sclerosis, Haemorheology
DOI: 10.3233/CH-1985-5111
Citation: Clinical Hemorheology and Microcirculation, vol. 5, no. 1, pp. 79-84, 1985
Authors: Weber, H. | Schmid-Schönbein, H. | Lemmens, H.A.J.
Article Type: Research Article
Abstract: RAYNAUD-attacks, i.e. cold induced episodes of hypoperfusion of the upper extremities are characterized by a “tricolore-phenomenon”. They are thought to occur as a consequence of vasospastic diseases (M. RAYNAUD). However, abnormal high viscosity may cause a very similar secondary phenomenon in hematological diseases, especially due to an overproportional increase in blood viscosity at low shear in hypothermia. Previously, anticonstrictive interventions (e.g. sympathectomy, vasodilator drugs) were applied, more recently plasmapheresis was recommended, albeit with variable success. Such therapy would be logical in case of a humoral cause of RAYNAUD-attacks. Simple hemorheological tests (rheoaggregometry of red cell aggregation, plasma viscosity, hematocrit determination) …appears to differentiate clearly between primary M. RAYNAUD and secondary RAYNAUD-phenomena in disorders such as systemic sclerosis, rheumatoid arthritis. In the latter, there is a strongly increased tendency to red cell aggregation, demonstrable in accelerated rate of aggregate formation and in a highly abnormal shear resistance of the aggregates in flow. Show more
Keywords: M. RAYNAUD, Systemic sclerosis, RAYNAUD-phenomenon, red cell aggregation, photometric aggregometry, Myrenne-aggregometer, plasma viscometry
DOI: 10.3233/CH-1985-5112
Citation: Clinical Hemorheology and Microcirculation, vol. 5, no. 1, pp. 85-97, 1985
Authors: Walker, T. | Matrai, A. | Flute, P.T. | Dormandy, J.A.
Article Type: Research Article
Abstract: Six claudicants without rest pain or diabetes were included in this study. 2000ml plasma were replaced by 1500ml Haemaccel and 500ml isotonic NaCl solution at weekly intervals. The following tests were carried out before, immediately after, and on the 1st, 2nd and 5th days following the first treatment: whole blood viscosity at 95, 2.5 and 0.7s shear rates, plasma viscosity, red cell filtration, fibrinogen, ESR, full blood count, calf blood flow measured at rest and at reactive hyperaemia, brachial and ankle systolic pressures, and exercise step test. There was a significant decrease of plasma viscosity, fibrinogen and whole blood viscosity …at each shear rate after treatment, returning to the baseline values between 5 and 7 days. There was no improvement in the functional tests despite the changes observed in viscosity. No adverse side-effects resulting from the use of Haemaccel were observed. Show more
Keywords: Plasmapheresis, claudication, plasma viscosity
DOI: 10.3233/CH-1985-5113
Citation: Clinical Hemorheology and Microcirculation, vol. 5, no. 1, pp. 99-106, 1985
Article Type: Announcement
DOI: 10.3233/CH-1985-5114
Citation: Clinical Hemorheology and Microcirculation, vol. 5, no. 1, pp. 107-107, 1985
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