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.
Ans:
A
Feedback:
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.
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