During a total knee arthroplasty, the surgeon asks the CRNFA to apply a pneumatic tourniquet. The tourniquet pressure for a lower extremity should typically be set at:
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A
50 mmHg above systolic blood pressure
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B
100 mmHg above systolic blood pressure
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C
Limb occlusion pressure plus 40–80 mmHg
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D
A fixed pressure of 350 mmHg regardless of patient blood pressure