Which of the following deficiencies prolongs the PTT but does not lead to abnormal bleeding?

a. Factor V
b. Factor VIII
c. Factor XI
d. Factor XII

ANS: D
A deficiency of factor XII prolongs the PTT. However, patients with this deficiency do not have abnormal bleeding.

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Polypharmacy is a significant cause of all of the following EXCEPT:

A) Noncompliance. B) Pharmacodynamics. C) Adverse effects. D) Drug interactions.

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__________ a diagnostic scan that utilizes ultrasound waves to study the brain

Fill in the blank with correct word.

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