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qualitycontrol-179
SPECIMEN COLLECTION ERRORS — The text states that PROLONGED TOURNIQUET APPLICATION causes specific physiological changes. What happens when a tourniquet is applied too long?
A. Prolonged tourniquet causes haemolysis of all red blood cells
B. PROLONGED TOURNIQUET CAUSES LOCAL ANOXIA TO CELLS AND EXCESSIVE VENOUS BACK PRESSURE; anoxia causes small solutes (like potassium) to LEAK FROM CELLS and venous pressure concentrates cells, proteins, and protein-bound substances (like calcium)
C. Prolonged tourniquet only affects coagulation factor levels
D. Prolonged tourniquet decreases all analyte concentrations equally
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