Document Detail


Role of precapillary arteriovenous shunting in the pathogenesis of varicose veins and its therapeutic implications.
MedLine Citation:
PMID:  3554574     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The conventional pathogenesis of varicose veins and their subsequent development is essentially based on primary valvular insufficiency of the main saphenous trunk and incompetence of the perforating veins. In contrast, the concept of the pathogenesis of varicose veins presented in this review is based on the presence of arteriovenous (AV) shunting that occurs primarily in the venous tributaries and rarely in the main trunks of the saphenous system. Identification of arteriovenous communications (AVCs) with varicose veins has been documented by visual observation during surgery and especially by use of high-powered microscopes or magnifying lenses. The AVCs have been found consistently to originate subfascially and to terminate in tributaries extrafascially, thus bypassing the capillary network. By means of serial arteriography it was shown that in more than 80% of varicose veins there is premature venous opacification. By means of Doppler ultrasonography, it was demonstrated that AV shunting was present in 80% of the cases. A correlative study of these parameters has shown that the initial significant pathology in varicose veins is mostly confined to the tributaries, although at an advanced stage the main trunk may also be subsequently affected to a lesser degree. In terms of management, these data strongly imply that sclerotherapy or surgical treatment (ligation or excision) should be confined to the tributaries and that high saphenofemoral ligation and stripping should be avoided except in cases where evidence shows valvular involvement and incompetency of the latter. As a result, this study strongly suggests that one could most often spare the main trunk of the saphenous vein for eventual use as a vascular graft.
Authors:
H Haimovici
Related Documents :
25366384 - Is there already a place for endovascular treatment of the common femoral artery?
8077464 - Diagnosis and treatment of varicose veins: a review.
18453484 - Mechanisms of varicose vein formation: valve dysfunction and wall dilation.
21971644 - The effect of skin entry site, needle angulation and soft tissue compression on simulat...
22347654 - Acute pulmonary embolism decreases adenosine plasma levels in anesthetized pigs.
16414294 - Total laparoscopic aortic repair for occlusive and aneurysmal disease: first 95 cases.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Surgery     Volume:  101     ISSN:  0039-6060     ISO Abbreviation:  Surgery     Publication Date:  1987 May 
Date Detail:
Created Date:  1987-05-26     Completed Date:  1987-05-26     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0417347     Medline TA:  Surgery     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  515-22     Citation Subset:  AIM; IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Arteriovenous Anastomosis / pathology,  physiopathology*,  radiography
Hemodynamics
Humans
Pulsatile Flow
Saphenous Vein / physiopathology
Ultrasonography
Varicose Veins / physiopathology*,  therapy
Comments/Corrections
Erratum In:
Surgery 1987 Jul;102(1):54

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Skin flaps in periorbital reconstruction.
Next Document:  Percutaneous aspiration of peripancreatic fluid collections: a safe method to detect infection.