3 Venipuncture Fundamentals Free Online FlashCards

How do veins generally differ from arteries?

Veins carry blood toward the heart and are generally more superficial and compressible than arteries.

Why is the median cubital vein often the first choice?

The median cubital vein is often prominent and well anchored across the center of the elbow crease, making it the usual first choice when suitable.

How can palpation help distinguish a vein from a tendon or artery?

A vein usually feels resilient and may roll slightly; a tendon feels firm and cordlike. Avoid pulsatile structures, which may indicate an artery.

When might a winged collection set be useful?

A winged collection set may be useful for a small, fragile, or difficult-to-access vein. Follow the correct tube-fill procedure for that device.

What must be confirmed with the patient before collection?

Confirm the order and identify the patient using required identifiers; explain the procedure and obtain consent before collection.

How should the tourniquet and patient’s hand be managed?

Place it several inches above the site, snug enough to slow venous return without stopping arterial flow. Ask for a gentle fist, not pumping, and avoid leaving it on for more than two minutes.

How should the puncture site be prepared?

Use the approved antiseptic for the required contact time, then let the site air-dry completely. Do not touch the prepared site; if touched, clean it again.

What is a common order of draw for collection tubes?

A common sequence is blood cultures, citrate, serum, heparin, EDTA, then glycolytic-inhibitor tubes. Confirm the current sequence and any special requirements with the laboratory.

What are key safety steps when ending a needle collection?

Release the tourniquet before withdrawing the needle. After withdrawal, activate the needle’s safety feature and discard the device immediately as a unit into a sharps container; never recap it.

Where is the cephalic vein, and what is its role in site selection?

The cephalic vein is on the thumb-side, or lateral side, of the forearm and arm; it is a common alternative site.

Why does the basilic vein require extra caution?

The basilic vein is on the little-finger-side, or medial side. Use extra caution because important nerves and arteries lie nearby.

Why should tube selection not rely on cap color alone?

Verify the tube required for each test rather than relying on cap color alone, because tube additives and cap colors can vary.