RN Nursing · Specimen Collection for Glucose Monitoring · Practice question
What is the recommended post-care technique immediately following a venipuncture?
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Label the blood tubes
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✓
Hold pressure to draw site
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Apply cotton balls to draw site
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Bend the patient's elbow
Answer & explanation
Correct: Hold pressure to draw site
Immediately after a venipuncture is completed, the priority post-care action is to hold pressure directly to the draw site. Applying firm, continuous pressure for at least one to two minutes helps achieve hemostasis by allowing the punctured vessel to seal and preventing hematoma formation. This is especially important for patients on anticoagulants, who may require extended pressure. Holding pressure is the first and most critical step because bleeding control must be ensured before any other action is taken. Labeling the blood tubes is also an important step, but it should be done before leaving the patient's side — not before ensuring that bleeding has stopped. Applying cotton balls is not recommended as a standard technique because loose cotton fibers can adhere to the site and disrupt clot formation when removed. Bending the patient's elbow was once a common lay practice but is discouraged clinically because it can increase the risk of hematoma by disrupting clot formation and compressing the vessel unevenly. Straight arm with direct digital pressure is the evidence-based standard. Students should remember that patient safety at the puncture site takes immediate priority over administrative tasks such as labeling or documentation.
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