12 Questions
What is the primary purpose of a modified Allen test?
To determine if there is adequate perfusion through the ulnar artery in case the radial artery becomes occluded
Which of the following devices can measure COHb levels?
CO-oximeter/hemoximeter
What does a positive result in a modified Allen test indicate?
Adequate ulnar circulation
What happens to the pH value if a blood sample is not quickly cooled in ice water?
It decreases
Which of the following situations would NOT warrant a blood gas analysis?
Simple fracture
What is the limitation of pressing on the nail bed to make it blanch and then releasing the pressure to check on reperfusion?
It is a general indicator of peripheral perfusion but does not confirm adequate circulation through either the radial or the ulnar arteries
When may gloves be worn on both hands?
When blood may be contacted by either hand
What is indicated by a PaO2 value in the 60 to 79 torr range?
Mild hypoxemia
What is the result of an acute rise in CO2 of 10 mm Hg?
A drop in pH of 0.05 unit
What is indicated by a PaO2 value greater than 80 torr with supplemental oxygen?
Corrected hypoxemia
What is indicated by a low PaCO2 value coupled with normal bicarbonate concentration and normal base excess found with an alkalotic pH?
Uncompensated respiratory alkalosis
What is the correlation between a PaO2 level and tissue oxygenation?
A PaO2 level of less than 80 torr correlates with tissue hypoxia
This quiz assesses your understanding of the Allen test, a procedure used to evaluate the blood supply to the hands. It determines if there is adequate perfusion through the ulnar artery in case the radial artery becomes occluded. Test your knowledge on the importance of the Allen test in ensuring hand perfusion.
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