Table 1

VTE risk factors

Acute illnessClinicalGenetic
Acute MI Age > 60 y Antithrombin deficiency 
Acute heart failure (NYHA class III or IV) History of VTE Protein C deficiency 
Acute infectious disease History of malignancy Protein S deficiency 
Acute respiratory disease Known thrombophilia Hyperhomocysteinemia 
Acute rheumatic disease Extreme limitation in mobility Raised prothrombin levels 
Autoimmune diseases Estrogen therapy or pregnancy Factor V Leiden 
Ischemic stroke Obesity Raised factor VIII levels 
 Thrombocytosis Hyperfibrinogenemia 
 Varicose veins  
 Chronic kidney disease or nephrotic syndrome  
Acute illnessClinicalGenetic
Acute MI Age > 60 y Antithrombin deficiency 
Acute heart failure (NYHA class III or IV) History of VTE Protein C deficiency 
Acute infectious disease History of malignancy Protein S deficiency 
Acute respiratory disease Known thrombophilia Hyperhomocysteinemia 
Acute rheumatic disease Extreme limitation in mobility Raised prothrombin levels 
Autoimmune diseases Estrogen therapy or pregnancy Factor V Leiden 
Ischemic stroke Obesity Raised factor VIII levels 
 Thrombocytosis Hyperfibrinogenemia 
 Varicose veins  
 Chronic kidney disease or nephrotic syndrome  

NYHA indicates New York Heart Association.

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