A provider orders an ESR to be performed on a patient and describes the test to the patient. Which of the following statements made by the patient indicates an understanding of the teaching?
"This test measures my estrogen serum ratio after menopause."
"This test measures the fluctuation of serum protein."
"This test measures my hemoglobin levels."
"This test measures the distance my RBCs have dropped."
The Correct Answer is D
A. "This test measures my estrogen serum ratio after menopause." ESR stands for erythrocyte sedimentation rate, not estrogen serum ratio. This is an incorrect interpretation of the test.
B. "This test measures the fluctuation of serum protein." The ESR does not directly measure serum protein levels. It measures the rate at which red blood cells sediment in a period of one hour.
C. "This test measures my hemoglobin levels." Hemoglobin levels are measured by a hemoglobin test, not an ESR. This statement is incorrect.
D. "This test measures the distance my RBCs have dropped." This is the correct understanding. ESR measures the rate at which red blood cells settle at the bottom of a test tube over a specified period, indicating the distance the RBCs have dropped.
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Correct Answer is A
Explanation
A. Figure 8: The figure 8 technique provides good support and stability to joints, such as the ankle, and is effective in immobilizing and securing the bandage.
B. Recurrent: The recurrent technique is used to cover a specific area, such as a stump, rather than to support a joint.
C. Tubular: The tubular bandage technique is typically used for covering and securing dressings on limbs rather than specifically supporting joints.
D. Triangular: The triangular bandage is often used for making slings or covering larger areas but is not as effective as the figure 8 technique for joint support.
Correct Answer is B
Explanation
A. C-reactive protein (CRP): CRP is typically tested using a serum sample collected in a gold or red-top tube, not a light blue tube.
B. Partial thromboplastin time (PTT): PTT is a coagulation test that requires a light blue top tube containing sodium citrate, which acts as an anticoagulant. This tube is specifically used for coagulation studies.
C. Glucose: Glucose levels are commonly measured using a gray-top tube containing sodium fluoride to inhibit glycolysis, not a light blue tube.
D. Lactate: Lactate levels are typically measured using a gray-top tube or green-top tube, depending on the specific protocol, not a light blue tube.