What are the characteristics of good veins?
What are the characteristics of good veins?
Blood is transported in arteries , veins and capillaries ….Structure and function of blood vessels.
| Arteries | Veins |
|---|---|
| Carry blood under high pressure | Carry blood under low or negative pressure |
| Have thick muscular and elastic walls to pump and accommodate blood | Have thin walls – have less muscular tissue than arteries |
What are the characteristics of a suitable vein for venipuncture?
Of these, the median cubital vein is usually the vein of choice for phlebotomy: It is typically more stable (less likely to roll), it lies more superficially, and the skin overlying it is less sensitive than the skin overlying the other veins. Antecubital veins, right arm. Antecubital veins, left arm.
How do you choose a vein for cannulation?
Choosing a vein
- You should select a site that is the least restrictive for the patient such as the posterior forearm or dorsum of the hand.
- Avoid areas near the elbow and wrist joints (to reduce the likelihood of dislodgement as a result of the patient’s movement).
How do you assess a suitable vein?
Locate a suitable vein by palpation with the tips of your fingers – do not use your thumb because it has a pulse. Try not to look at the vein when palpating because this will reduce your sense of touch (Dougherty and Lister 2015). A suitable vein will be bouncy to the touch, have no pulse and refill when depressed.
What is a suitable vein?
The optimal sites for venepuncture are the veins in the antecubital fossa – the cephalic, basilic and median cubital veins. A suitable vein will be ‘bouncy’ to the touch, have no pulse and refill when depressed.
What veins should I avoid for cannulation?
The veins of choice are the cephalic or basilic. Avoid using the antecubital veins as this will restrict the patient’s movement and increase the risk of complications such as phlebitis and infiltration (Dougherty & Watson, 2011; RCN, 2010).
Which vein is best suitable 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 principles of cannulation?
IV cannulation: Principles and practice
- Site selectionIn the emergency situation, the veins in the ante-cubital fossa are usually the first choice.
- Preparation for the procedureIt is essential to psychologically prepare the patient; verbal consent and explanation are paramount.
Is Venepuncture the same as cannulation?
As previously stated, peripheral IV cannulation involves inserting an IV cannula into a peripheral vein. Primarily the veins of the hand or forearm are used. Venepuncture involves inserting a needle into the peripheral veins, for the purpose of aspirating blood.
What are the indications of cannulation?
Indications for IV cannulation include the following:
- Repeated blood sampling.
- IV administration of fluid.
- IV administration of medications.
- IV administration of chemotherapeutic agents.
- IV nutritional support.
- IV administration of blood or blood products.
What are the important factors in selecting a cannula?
Select an appropriate cannula based on purpose, duration of use and age of patient. The smallest sized cannula suitable for the purpose should be selected. (Inspect cannula before insertion to ensure the needle is fully inserted into the plastic cannula and that the needle tip is not damaged.)
What are the different types of umbilical cord abnormalities?
Several umbilical cord abnormalities exist, including an umbilical cord that’s too short or long. Another is a two-vessel cord or SUA. This cord type has a single artery and vein instead of two arteries and a vein.
How many arteries and veins are there in the umbilical cord?
Usually, the vein is larger and distinguishable from the two arteries. A technician may note that there is only a single artery after looking at a cross-section of your umbilical cord. They may also note that an artery is only seen on one side of your baby’s bladder.
Which veins are used for upper extremity cannulation?
Upper Extremity. Cannulation of the cephalic, basilic, or other unnamed veins of the forearm is preferrable. The three main veins of the antecubital fossa (the cephalic, basilic, and median cubital) are frequently used.
What is the function of the umbilical vein during pregnancy?
The umbilical vein carries oxygen-rich blood to the baby. The umbilical arteries carry oxygen-poor blood away from the fetus and to the placenta. The placenta then returns the wastes to the mother’s blood, and the kidneys eliminate them.
