Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Virchow's triadtrio of elements essential to thrombosis; i.e. blood stasis (secondary to immobility, congestive heart failure, vein compressions), alteration to a vein wall (secondary to previous thrombosis, vein inflammation/infection, direct vein wall trauma, varicose veins) and blood hypercoagulability (e.g. antiphospholipid syndrome, hyperhomocysteinaemia, lower-limb surgery/trauma, childbirth, polycythaemia, neoplastic disease, oral contraceptives); thrombosis requires a minimum of two of the three elements
three factors leading to thrombosis: stasis, hypercoagulability and intimal change.