Venous thrombosis: Difference between revisions
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'''Thrombus''' is term given to a blood clot that remains in the place where it formed. A '''venous thrombosis''' is a condition in which a thrombus([[blood clot]]) forms within a [[vein]]. '''Superficial venous thrombosis''', as the name suggest is the formation of a thrombus in superficial veins. It can cause discomfort but generally do not cause serious consequences, unlike the '''[[deep venous thrombosis]]''' (DVTs) that form in the deep veins of the legs or in the pelvic veins. | '''Thrombus''' is term given to a blood clot that remains in the place where it formed. A '''venous thrombosis''' is a condition in which a thrombus([[blood clot]]) forms within a [[vein]]. '''Superficial venous thrombosis''', as the name suggest is the formation of a thrombus in superficial veins. It can cause discomfort but generally do not cause serious consequences, unlike the '''[[deep venous thrombosis]]''' (DVTs) that form in the deep veins of the legs or in the pelvic veins. | ||
Since the veins return [[blood]] to the [[heart]], if | Since the veins return [[blood]] to the [[heart]], if a blood clot formed in a vein breaks off, it can be transported to the right side of the heart and from there into the [[lung]]s. A piece of thrombus that is transported in this way is an '''embolus''' (plural '''emboli'''): the process of forming an emboli from a thrombus is called a ''thromboembolism''. An embolism that lodges in the lungs is a ''[[pulmonary embolism]]'' (PE). Deep venous thrombosis (DVT) and pulmonary embolism (PE) are manifestations of a single disease entity, namely, [[venous thromboembolism]] (VTE). | ||
Systemic embolisms of venous origin can occur in patients with an [[Atrial septal defect|atrial]] or [[Ventricular septal defect|ventricular]] septal defect, through which an embolus may pass into the arterial system. This is termed a '''''paradoxical emboli'''''. | Systemic embolisms of venous origin can occur in patients with an [[Atrial septal defect|atrial]] or [[Ventricular septal defect|ventricular]] septal defect, through which an embolus may pass into the arterial system. This is termed a '''''paradoxical emboli'''''. | ||
Revision as of 16:26, 30 August 2011
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor-In-Chief: Ujjwal Rastogi, MBBS [2]
Overview
Thrombus is term given to a blood clot that remains in the place where it formed. A venous thrombosis is a condition in which a thrombus(blood clot) forms within a vein. Superficial venous thrombosis, as the name suggest is the formation of a thrombus in superficial veins. It can cause discomfort but generally do not cause serious consequences, unlike the deep venous thrombosis (DVTs) that form in the deep veins of the legs or in the pelvic veins.
Since the veins return blood to the heart, if a blood clot formed in a vein breaks off, it can be transported to the right side of the heart and from there into the lungs. A piece of thrombus that is transported in this way is an embolus (plural emboli): the process of forming an emboli from a thrombus is called a thromboembolism. An embolism that lodges in the lungs is a pulmonary embolism (PE). Deep venous thrombosis (DVT) and pulmonary embolism (PE) are manifestations of a single disease entity, namely, venous thromboembolism (VTE).
Systemic embolisms of venous origin can occur in patients with an atrial or ventricular septal defect, through which an embolus may pass into the arterial system. This is termed a paradoxical emboli.
A pulmonary embolus is a very serious condition that can be fatal if not recognized and treated promptly.
Risk factors
- Medical
- Familial
- Antithrombin III deficiency
- Protein C deficiency/Protein S deficiency
- APC resistance (Factor V Leiden)
- Dysfibrogenemia
- Hypoplasminogenemia
- Familial homocysteinemia
See also
- Arterial thrombosis
- venous thromboembolism
- Deep vein thrombosis
- Pulmonary embolism
- Portal vein thrombosis
- Plethysmography, a test to detect a venous thrombosis