Which of the following is an expected finding in polycythemia vera?
a. Thrombocytosis
b. Anemia
c. Low leukocyte alkaline phosphatase
d. Normal white count
ANS: A
Thrombocytosis, or an elevated platelet count, is characteristically present in polycythemia vera. Polycythemia vera has an elevated red cell mass, so anemia is not present. The leukocyte alkaline phosphatase score and the white count are both elevated.
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Which of the following statements about warfarin (Coumadin) is NOT true?
A) It actively breaks down the fibrin network, thereby dissolving formed thrombi. B) It helps treat chronic atrial fibrillation. C) It prevents coagulation by antagonizing the effects of vitamin K. D) It was originally used as rat poison.
Due to anatomy a premolar bitewing radiograph will almost always exhibit overlap between the
A) distal of the lateral incisor and the mesial of the canine. B) distal of the canine and the mesial of the first premolar. C) distal of the first premolar and mesial of the second premolar. D) distal of the second premolar and mesial of the first molar.