MCQ Flashcards

When performing a venipuncture, which vein is most commonly used as the first choice in adults?

Answer: Median cubital vein

The median cubital vein in the antecubital fossa is the preferred first-choice site due to its size, stability, and accessibility.

A patient with a latex allergy needs a blood draw. Which action is most important before the procedure?

Answer: Use latex-free gloves and latex-free tourniquet

All latex-containing supplies must be replaced with latex-free alternatives to prevent an allergic reaction.

The order of draw for a routine blood collection using evacuated tubes is:

Answer: Light blue (citrate) → SST (gold) → EDTA (purple)

The CLSI-recommended order is: citrate (light blue) first, then serum tubes (gold/SST), then EDTA (purple) last.

A patient falls while ambulating with PCT assistance. After ensuring patient safety, what is the PCT's next priority?

Answer: Complete an incident report and notify the nurse immediately

After stabilizing the patient, the nurse must be notified immediately and an incident report must be filed per facility policy.

Which electrolyte imbalance is most commonly associated with muscle cramps, cardiac arrhythmias, and weakness in post-surgical patients?

Answer: Hypokalemia

Hypokalemia (low potassium) commonly causes muscle cramps, weakness, and dangerous cardiac arrhythmias.

When collecting a midstream clean-catch urine specimen from a female patient, which instruction is correct?

Answer: Cleanse front-to-back, void a small amount into the toilet, then collect midstream

The front-to-back cleanse followed by discarding the first void before collecting midstream prevents contamination.

A PCT observes a colleague not washing hands between patient rooms. The most appropriate action is to:

Answer: Remind the colleague that hand hygiene is required between patients

Politely reminding the colleague addresses the safety issue immediately and promotes a culture of accountability.