Venipuncture Procedures

The most commonly used vein for venipuncture is:

• Basilic vein

• Cephalic vein

• Median cubital vein

• Radial vein

Why should the basilic vein be the last choice for venipuncture?

• It is difficult to locate.

• It is close to major arteries and nerves.

• It is prone to collapse.

• It is too small for venipuncture.

What is a potential risk of using the dorsal metacarpal veins in older adults?

• Increased risk of thrombosis

• Higher chance of vein collapse

• Reduced blood flow

• Increased pain sensation

What should be avoided in the 7.5 cm area above the thumb and on the palmar surface of the wrist?

(a)  

The first step in blood collection after identifying the site, performing antisepsis and gathering supplies is:

• Anchoring the vein

• Inserting the needle

• Palpating the site

• Labeling the tube

In venipuncture, anchoring a vein involves:

• holding the skin taut to stabilize the vein

• applying pressure to stop bleeding

• using a tourniquet to enlarge the vein

• cleaning the area with antiseptic

Skin puncture is the preferred method for retrieving blood from a child or infant because:

• Reduces the risk of anemia

• Provides a larger volume of blood.

• Decreases the need to restrain a child

• Keeps blood specimens from hemolyzing

Fill in the blank: The safest area for skin puncture in an infant is

• Plantar surface of the heel, medial to the imaginary line extending from between the fourth and fifth toes to the heel.

• Lateral surface of the heel, near the Achilles tendon.

• Plantar surface, center of the heel

• Lateral surface, near the toes.

Which of the following is a reason to avoid using the AV shunt for blood draws in dialysis patients?

• It is more painful

• It can alter specimen results

• The AV shunt is less accessible

• It can damage the shunt