Which of the following is an example of a quantitative platelet disorder related to distribution?
a. Thrombotic cytopenic purpura
b. Essential thrombocythemia
c. Splenomegaly
d. Hemolytic uremic syndrome
ANS: C
An abnormal distribution of platelets may cause of thrombocytopenia. The spleen sequesters approximately one third of the total platelet mass. When the spleen is enlarged (splenomegaly), most platelets are sequestered in the enlarged spleen, resulting in a lower venous blood count.
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a. L0810 b. L0820 c. L0859 d. L0861
The preferred ultrasound examination to evaluate vascular occlusions and blood flow dynamics is
a. M-mode scanning. b. B-mode scanning. c. color flow Doppler scanning. d. triplex scanning.
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