When collecting a blood sample with a Vacutainer system, it is important to:

Stabilize the holder when changing tubes.

Withdraw the holder and tube at the same time.

Replace the tube stopper firmly for each sample.

Release the tourniquet after successful venipuncture.

Answer and Explanation

The Correct Answer is A

A. Stabilize the holder when changing tubes. Stabilizing the holder prevents accidental movement of the needle, ensuring proper blood flow into the tube and minimizing discomfort or injury to the patient.

B. Withdraw the holder and tube at the same time: The holder should remain in place until all samples are collected to prevent repeated venipunctures.

C. Replace the tube stopper firmly for each sample: The tube stopper should not be removed or replaced during the procedure.

D. Release the tourniquet after successful venipuncture: The tourniquet should be released after blood flow is established and before the needle is withdrawn, not as the first priority.

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Correct Answer is D

Explanation

A. Selecting the correct dose of medication: Dosing is determined based on the drug, patient factors, and organism sensitivity, not by the culture itself.

B. Determining the prognosis of the disease: A culture is diagnostic, not prognostic.

C. Ruling out an infectious process: A culture is performed to confirm and identify the organism causing an infection, not to rule it out.

D. Growing and identifying causative organisms. A culture is obtained to identify the specific microorganism causing the infection so that appropriate treatment can be prescribed.

A. "You will not be able to talk to the technician during the procedure." B. "Your exposure to radiation will be minimal." C. "Unlike an x-ray, the MRI allows you to move around a bit." D. "You'll have to remove metal objects such as watches and body jewelry."

Correct Answer is D

Explanation

A. "You will not be able to talk to the technician during the procedure.": Most MRIs allow communication via intercom.

B. "Your exposure to radiation will be minimal.": MRI does not use ionizing radiation, unlike CT scans or X-rays.

C. "Unlike an x-ray, the MRI allows you to move around a bit.": Movement during MRI imaging can result in blurred images.

D. "You'll have to remove metal objects such as watches and body jewelry." MRI uses strong magnetic fields, so all metal objects must be removed to avoid injury or interference with imaging.

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When collecting a blood sample with a Vacutainer system, it is important to:

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