What are the 5 sites for venipuncture?
What is Antecubital Fossa?
- Median cubital vein.
- Cephalic vein.
- Basilic vein.
What are 3 common sites for venipuncture?
The most site for venipuncture is the antecubital fossa located in the anterior elbow at the fold. This area houses three veins: the cephalic, median cubital, and basilic veins (Figure 1).
What are the acceptable sites for venipuncture?
VENIPUNCTURE SITE SELECTION: Although the larger and fuller median cubital and cephalic veins of the arm are used most frequently, the basilic vein on the dorsum of the arm or dorsal hand veins are also acceptable for venipuncture. Foot veins are a last resort because of the higher probability of complications.
Which veins are appropriate for venipuncture?
The median cubital vein is the larger and more stable vein and is preferred for venipuncture. The cephalic and basilic veins have a greater tendency to roll and veinpuncture may be more painful from these sites.
What are the 3 layers of veins?
The vein wall consists of three layers: The tunica intima, the tunica media and the tunica adventitia. The innermost layer of the vein is the tunica intima. This layer consists of flat epithelial cells.
What is the most common venipuncture site?
The most common site of venipuncture is the upper arm. The present study macroscopically and anatomically ascertained positional relationships between cutaneous nerves and veins in the cubital (aka antecubital) fossa in many cadaveric dissections to determine the risk of peripheral nerve injury during venipuncture.
Where is antecubital?
The median cubital vein (antecubital vein) is a prominent superficial upper limb vessel. Its location is in the cubital fossa, on the anterior/flexor aspect of the elbow joint. This region of the upper limb is sometimes referred to as the antecubital area.
What is a blown vein?
The term “blown vein” refers to a vein that has sustained damage from a needle, causing it to leak blood into the surrounding area. Doctors also call this a ruptured vein. The symptoms of a blown vein include: discolored skin around the injection site. bruising.
What are venipuncture sites?
Venipuncture Site Selection: The median cubital and cephalic veins are most. commonly used for venipuncture. See below. Alternative sites are the basilic. vein on the dorsum of the arm or dorsal hand veins.
Why is the vein blue?
Blue light has a short wavelength (about 475 nanometres), and is scattered or deflected much more easily than red light. Because it’s easily scattered it doesn’t penetrate so far into the skin (only a fraction of a millimetre). This means your veins will appear blue compared to the rest of your skin.
What are vein walls called?
As in the arteries, the walls of veins have three layers, or coats: an inner layer, or tunica intima; a middle layer, or tunica media; and an outer layer, or tunica adventitia.
Where is the best place on your body to draw blood?
Venipuncture is the most common way to collect blood from adult patients. Collection takes place from a superficial vein in the upper limb, generally the median cubital vein; this vein is close to the skin and doesn’t have many large nerves positioned close by. This reduces pain and discomfort for the patient.