What is the best site for venipuncture?
The most commonly used site for a venipuncture is at the bend of the elbow, also called the antecubital fossa.
How do you choose an appropriate location for a venipuncture?
Position the patient in a chair, or sitting or lying on a bed. Wash your hands. Select a suitable site for venipuncture , by placing the tourniquet 3 to 4 inches above the selected puncture site on the patient.
Which vein is preferred by most phlebotomists?
The median cubital vein is the preferred vein for phlebotomy because it is usually larger than the other veins and more stationary. Veins can move, or roll, which makes it more difficult to perform phlebotomy.
Why is median cubital vein preferred?
Of these three veins , the preferred one for venipuncture is the median cubital vein because it is larger and has a lower tendency to move or roll when the needle is inserted. There are also fewer nerve endings surrounding this vein making venipuncture less painful at this site.
Which vein should be avoided for venipuncture?
PERFORMING A VENIPUNCTURE . arm vein . Veins in the foot and ankle should be utilized only as a last resort. also be avoided .
When should venipuncture be avoided?
If the antecubital area of the patient’s arm is compromised or inaccessible, an alternate site must be chosen for venipuncture such as the top of the hand. However, some sites must be avoided due to the risk of complications and/or unnecessary pain to the patient.
What is the most important step in doing a venipuncture?
Venipuncture is the process of collecting or “draw- ing” blood from a vein and the most common way to collect blood specimens for laboratory testing. It is the most frequent procedure performed by a phle- botomist and the most important step in this proce- dure is patient identification.
At what angle should the venipuncture needle be inserted?
The needle should form a 15 to 30 degree angle with the surface of the arm. Swiftly insert the needle through the skin and into the lumen of the vein. Avoid trauma and excessive probing.
What happens if you hit an artery during venipuncture?
The needle needs to be removed and hopefully circulation will resume. Tissues deprived of blood will otherwise start to die off. If an artery is pierced, the blood pressure will be great enough to force blood into the syringe. This may not be the case with a smaller artery .
What are the 3 main veins to draw blood?
Explore the Possibilities! The antecubital area of the arm is usually the first choice for routine venipuncture. This area contains the three vessels primarily used by the phlebotomist to obtain venous blood specimens: the median cubital , the cephalic and the basilic veins.
How do I make my veins better for blood draw?
Tips and Tricks for Accessing Problem Veins Get warm. When the body is warm, blood flow increases, dilating the veins and making them easier to find and stick. Use gravity. Increase blood flow to your arm and hand by letting gravity do the work. Hydrate. When the body is properly hydrated, veins become more dilated. Relax.
Why basilic vein is the last choice for venipuncture?
10 Median basilic vein Median basilic vein The last choice for venipuncture in the M- shaped pattern (even though it may appear more accessible) Because it is more painful to puncture and, like the basilic vein , is located near the branches of the medial cutaneous nerve and the brachial artery.
Which vein is best for drawing blood?
For adult patients, the most common and first choice is the median cubital vein in the antecubital fossa . Commonly referred to as the antecubital or the AC it can be found in the crevice of the elbow between the median cephalic and the median basilic vein .
Which vein is preferred for IV sites and why?
The three main veins of the antecubital fossa (the cephalic , basilic , and median cubital ) are frequently used. These veins are usually large, easy to find, and accomodating of larger IV catheters. Thus, they are ideal sites when large amounts of fluids must be administered.
What does the median cubital vein drain into?
The median cubital vein typically arises as a collateral branch from the cephalic vein which runs on the anterolateral aspect of the upper limb. It courses superomedially across the roof of the cubital fossa, within the subcutaneous tissue and empties into the basilic vein on the anteromedial side of the upper limb.