The bleeding time result will be normal and thus of no value to perform in patients who have:
a. A qualitative platelet disorder
b. von Willebrand disease (VWD)
c. Glanzmann thrombasthenia
d. Factor VIII deficiency
ANS: D
The bleeding time result will be normal in patients with a factor VIII deficiency. It ideally will be prolonged in all the other listed settings. The bleeding time test is being used less often because it has poor predictive value and leaves scarring.
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A sudden decrease in end-tidal CO2 occurs in a mechanically ventilated patient. A repeat analysis yields the same results. Which of the following situations might have accounted for these readings?
A. The ventilator circuit has become disconnected. B. There is a leak around the endotracheal tube. C. There is an increase in alveolar dead space. D. The carbon dioxide absorber is exhausted.
The first part of the pancreas that typically appears on axial sectional images that are arranged in descending order is the tail
Indicate whether the statement is true or false