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[Raynaud's phenomenon and blood viscosity].
C Lacombe1, J M Mouthon, C Bucherer
1Département de Biophysique, Hôpital Pitié-Salpêtrière, Paris.
Journal Des Maladies Vasculaires
|January 1, 1992
Summary
Raynaud's phenomenon involves blood flow issues, especially in cold. Hemorheological studies reveal abnormal blood viscosity in secondary Raynaud's but not primary Raynaud's disease.
Area of Science:
- Vascular Medicine
- Rheology
- Hemodynamics
Context:
- Raynaud's phenomenon is characterized by cold-induced vasomotor changes and altered blood viscosity.
- Traditional methods like capillaroscopy and plethysmography assess vessel wall integrity.
- Blood viscosity measurements offer insights into the hemorheological properties of blood flow.
Purpose:
- To investigate the relationship between capillaroscopy findings and hemorheological parameters in Raynaud's phenomenon.
- To differentiate between primary Raynaud's disease and secondary Raynaud's phenomenon using rheological assessments.
Summary:
- A comparative study analyzed 46 Raynaud's phenomenon patients using capillaroscopy, plethysmography, and viscosity measurements.
- Results indicated a correlation between capillaroscopy and thixotropy, with distinct patterns in primary versus secondary Raynaud's.
- Hemorheological studies showed near-normal parameters in primary Raynaud's disease but abnormal parameters in secondary Raynaud's phenomenon.
Impact:
- Hemorheological assessment, particularly blood viscosity, can aid in distinguishing between primary and secondary Raynaud's phenomenon.
- This study highlights the importance of rheological evaluation in understanding the pathophysiology of Raynaud's.
- Findings suggest that abnormal blood viscosity is a key feature of secondary Raynaud's phenomenon.