Document Detail


The increase of plasminogen activator inhibitor activity is associated with graft occlusion in patients undergoing aorto-coronary bypass surgery.
MedLine Citation:
PMID:  9375736     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Early graft occlusion is a common complication in patients undergoing aorto-coronary bypass surgery. Both mechanical and haemostatic factors play a role in the pathogenesis of thrombotic occlusion. Several studies have demonstrated a relationship between fibrinolytic activity and venous or arterial thrombosis. We undertook this study to evaluate the possible contribution of the fibrinolytic system to postoperative occlusion in patients undergoing aorto-coronary bypass graft (CABG). A venous occlusion (VO) test was performed preoperatively in 82 patients undergoing revascularization procedures. Before and after VO the euglobulin fibrinolytic activity and tissue type plasminogen activator (t-PA) activity and antigen were measured. Plasminogen activator inhibitor (PAI) activity and antigen and fibrinogen were also assessed in the preocclusion sample. An angiography performed 10d postoperatively showed graft occlusion in 23% of patients. Patients with graft occlusion had significantly higher preoperative PAI activity than patients without occlusion (P < 0.001). Reduced fibrinolytic response and t-PA capacity was also observed in the group of patients with graft occlusion (P < 0.03 and P < 0.02 respectively). We found a reduced preoperative fibrinolytic response, mainly related to high plasma PAI activity in patients with postoperative graft occlusion. These results suggest that increased PAI activity might have a predictive value for early thrombosis in patients undergoing CABG.
Authors:
J Rifón; J A Páramo; C Panizo; R Montes; E Rocha
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British journal of haematology     Volume:  99     ISSN:  0007-1048     ISO Abbreviation:  Br. J. Haematol.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1997-12-23     Completed Date:  1997-12-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372544     Medline TA:  Br J Haematol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  262-7     Citation Subset:  IM    
Affiliation:
Haematology Service, Clínica Universitaria, University of Navarra, Pamplona, Spain.
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MeSH Terms
Descriptor/Qualifier:
Angina Pectoris / metabolism,  surgery
Coronary Artery Bypass*
Female
Fibrinogen / metabolism
Fibrinolysis
Graft Occlusion, Vascular / metabolism*
Humans
Male
Middle Aged
Plasminogen Activator Inhibitor 1 / metabolism*
Risk Factors
Chemical
Reg. No./Substance:
0/Plasminogen Activator Inhibitor 1; 9001-32-5/Fibrinogen

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


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