A physician is explaining to a group of medical students the concept of Virchow triad as it applies to venous thrombosis. Which of the following clinical observations of a 50-year-old male client is most likely unrelated to a component of Virchow triad?
A) The man has decreased cardiac output and an ejection fraction of 30%.
B) The man's prothrombin time and international normalized ratio (INR) are both low.
C) The man has a previous history of a dissecting aneurysm.
D) There is bilateral, brown pigmentation of his lower legs.

Question

Quizplus · Accepted Answer

Cardiac output is not a component of Virchow triad. However, decreased INR and prothrombin time indicate hypercoagulability; a dissecting aneurysm is an example of vessel wall injury; and pigmentation in the lower legs indicates stasis of blood.

A Physician Is Explaining to a Group of Medical Students