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Deep Veins (deep + vein)

Distribution by Scientific Domains
Medical Sciences100%

Terms modified by Deep Veins

  • deep vein thrombosis
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    Selected Abstracts

    Laser-Doppler Examination Shows High Flow in Some Common Telangiectasias of the Lower Limb

    DERMATOLOGIC SURGERY, Issue 4 2005
    Imre Bihari MD
    Background. The accepted pathophysiology of telangiectasias is reflux from superficial or deep veins. There are physical signs and scientific findings that do not fit this theory but support the possibility of arteriovenous (AV) shunt origin. Objective. If there is a higher flow in spider veins than in the surrounding skin, it means that AV shunts participate in the circulation of the telangiectasia. On the other hand, slow flow indicates reflux as the etiologic factor. Method. Telangiectasias and the surrounding skin of 22 legs of 19 patients were examined with laser-Doppler equipment. Results. The probe over the spider vein found a higher flow value (average 28.2 perfusion units [PU]) than in the surrounding skin (15.6 PU) in 13 limbs, but it was significantly higher only in 5 cases. In 9 limbs, the flow was slower. Conclusion. We interpret the higher flow values as a consequence of open AV shunts. This means that AV shunt pathophysiology was present in some of our cases. IMRE BIHARI, MD, PHD, ANIKÓ MURÁNYI, MD, AND PéTER BIHARI, MD, HAVE INDICATED NO SIGNIFICANT INTEREST WITH COMMERCIAL SUPPORTERS. [source]

    Role of MRI in investigating the effects of elastic compression stockings on the deformation of the superficial and deep veins in the lower leg

    JOURNAL OF MAGNETIC RESONANCE IMAGING, Issue 1 2007
    Steven P. Downie MEng
    Abstract Purpose To evaluate the potential of MRI to investigate the mechanical effects of compression stockings on the veins of the lower limb. Materials and Methods The right calves of eight healthy volunteers were imaged in the prone position, with and without the presence of a compression stocking. Cross-sectional areas of all peroneal and posterior tibial veins, both saphenous veins, and any sufficiently large superficial veins were segmented in all subjects at mid-calf level in both cases. Variation in cross-sectional area along the axis of the great saphenous vein and a peroneal vein was also examined in three subjects. Results The mean cross-sectional area reduction was found to be greater in the deep veins (64%) than in the superficial veins (39%). Deep-vein cross-sections were generally elliptical, while superficial veins were approximately circular. Significant axial fluctuations were found in the cross-sectional areas. Conclusion MRI offers a precise source of data on the mechanical effects of lower-limb compression. Ultrasound (US) may be more cost-effective, but the data acquired are less comprehensive. Future biomechanical studies of lower-limb compression should make use of MRI. J. Magn. Reson. Imaging 2007;26:80,85. © 2007 Wiley-Liss, Inc. [source]

    Investigation and treatment of chronic venous ulcer disease

    ANZ JOURNAL OF SURGERY, Issue 4 2001
    M. C. Stacey
    Introduction: The investigation and treatment of chronic venous ulceration continues to present many difficulties for the clinician. The uncertainties relate to the appropriate use of different forms of investigation and whether conservative treatment or surgical treatment should be used. Method: A comprehensive search was undertaken of published literature on venous ulceration. Results: The extent of investigations is largely determined by the type of treatment that the patient is either fit to undertake or is prepared to undertake. When conservative treatment only is to be used, detailed investigation of the venous system is not required. The role of surgery to the veins remains unproven in improving the healing of venous ulcers. Surgery to prevent ulcer recurrence has been demonstrated to be of benefit only in patients who have normal deep veins. Conclusions: Investigations performed on the venous system should be determined by the planned treatment. Many of the operations that have been performed on the venous system still remain unproven in providing a benefit to the healing of venous ulcers and in preventing venous ulcer recurrence. [source]