Thromb Haemost 2000; 84(06): 981-988
DOI: 10.1055/s-0037-1614160
Review Article
Schattauer GmbH

Capillary Microscopic and Rheological Dimensions for the Diagnosis of von Willebrand Disease in Comparison to other Haemorrhagic Diatheses

Jürgen K. Koscielny
1   From the Institute for Transfusion Medicine, Medical Faculty Charité, Humboldt-University Berlin, Germany
,
Reinhard Latza
1   From the Institute for Transfusion Medicine, Medical Faculty Charité, Humboldt-University Berlin, Germany
,
Stefan Mürsdorf
,
Christof Mrowietz
2   Department of Clinical Haemostaseology and Transfusion Medicine, University Clinics of the Saarland, Homburg/Saar, Germany
3   Institute for Cardiovascular Research, Dresden, Germany
,
Holger Kiesewetter
1   From the Institute for Transfusion Medicine, Medical Faculty Charité, Humboldt-University Berlin, Germany
,
Ernst Wenzel
2   Department of Clinical Haemostaseology and Transfusion Medicine, University Clinics of the Saarland, Homburg/Saar, Germany
,
Friedrich Jung
2   Department of Clinical Haemostaseology and Transfusion Medicine, University Clinics of the Saarland, Homburg/Saar, Germany
3   Institute for Cardiovascular Research, Dresden, Germany
› Author Affiliations

We are indebted to Prof. Dr. U. Budde (Hamburg, Germany) for the performance of the multimeric.
Further Information

Publication History

Received 14 October 1999

Accepted after resubmission 06 July 2000

Publication Date:
13 December 2017 (online)

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Summary

It is known that angiodysplasia influence macrocirculation as well as microcirculation in patients with vWD. In the present study it was examined if intravital capillary microscopic dimensions (morphologic and dynamic) in skin (nailfold) in combination with rheologic parameters could give indications for the presence of vWD in patients with haemorrhagic diathesis.

Patients with vWD (n = 100; 92 type 1: definite type 1:78 and possible type 1:14; 8 type 2A) have in comparison to patients with other haemorrhagic diathesis [thrombocytopathy (n = 122), thrombocytopenia (n = 101), severe haemophilia A (n = 50) and severe haemophilia B (n = 20), congenital dysfibrinogenaemia (n = 22), oral anticoagulation with phenprocoumone (n = 112)] and to apparently healthy subjects (n = 100) a significantly increased capillary torquation (median index: 3.5), a venolar and an arteriolar capillary dilatation (median: 16.5 µm; median: 15.1 µm) and the highest part of microscopic bleedings (extravasates) with 40% in the video capillary microscopy as morphological changes. Only the congenital dysfibrinogenaemia appears with a larger dilatation in venolar capillaries (median: 14.5 µm). Microscopic bleedings are much less common in other haemorrhagic diatheses with a frequency between 4% and 13%.

In the vWD a significantly reduced duration of reactive hyperaemia (median: 150 sec). This is the only dynamic change that can be taken as a possible hint for a loss of flexibility within the precapillary vessels. A significantly reduced plasma viscosity (< 1.25 mPas) is typical for the vWD due to the increase of the shear stress in blood plasma because of the reduction of vWF-activities. Changes of the capillary morphology (dilatation, extravasates, capillary torquation) and the hypoplasmaviscosity are most sensitive for the vWD (75%, 65%, 40%, 80%) with a fairly high specifity (up to 93%) and a positive predictive value of 99%.

As a conclusion it seems reasonable to discuss the introduction of video capillary microscopy as a screening test for haemostasiological and angiological centers.