Question: Why do we perform arterial puncture?

Arterial puncture is performed for limited sampling and is a routine procedure in the management of critically ill and injured children.

When is an arterial puncture performed?

Line up the artery with two fingers with the beveled edge facing upper portion of the vessel. Enter the artery and attempt to go through and through the vessel. Slowly withdraw the syringe, stopping as soon as it begins to fill spontaneously. Withdraw the needle while applying pressure to the vessel with gauze.

What is arterial puncture procedure?

Indications Puncture of the radial artery is the preferred method of obtaining an arterial blood sample for blood gas analysis. The chief indication for measurement of arterial blood gas level is to obtain values for the partial pressures of oxygen and carbon dioxide and for arterial pH.

What is arterial blood puncture?

The sample can be obtained either through a catheter placed in an artery, or by using a needle and syringe to puncture an artery. These syringes are pre-heparinized and handled to minimize air exposure that will alter the blood gas values. This chapter describes only the procedure for a radial artery blood draw.

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What are the signs of an accidental arterial puncture?

Signs of suspected arterial puncture include noting bright red blood with pulsatile flow, blood column moving upwards in the tubing of an infusion set, intense pain and distal ischaemia. [5] Confirmation is carried out by blood gas analysis, pressure transducer and ultrasound.

How do you know if you hit an artery instead of a vein?

Arteries have a pulse, and the blood in them is bright red and frothy. Arteries are located deeper in the body than veins and so are not visible as many of your veins are. You’ll know you hit an artery if: The plunger of your syringe is forced back by the pressure of the blood.

What is the most common complication of arterial puncture?

Arterial Puncture

The most common complication is hemorrhage or hematoma formation at the puncture site. This occurs more often in brachial and femoral punctures than in radial punctures.

What happens if we take blood from artery?

Collecting blood from an artery typically hurts more than drawing it from a vein. Arteries are deeper than veins, and there are sensitive nerves nearby. You also may feel lightheaded, faint, dizzy, or nauseated while your blood is drawn.

What are two signs and symptoms of arterial puncture?

Arterial puncture

  • bleeding has restarted.
  • swelling that is large or increasing in size.
  • numbness or pins and needles in the arm, hand or fingers.
  • severe or worsening pain.
  • coldness or paleness of the lower arm, or hand of the affected arm.
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What are the disadvantages of arterial blood collection?

Collection of arterial blood has its disadvantages. It is more difficult to obtain than venous or capillary blood sample, it is more painful for the patient and it can be potentially dangerous, if the correct procedure is not followed (1).

Why is blood taken from a vein and not an artery?

Vein: Transverse Cross Section. Located throughout the body, veins return deoxygenated blood to the heart. Veins have valves to prevent backflow of blood and larger lumens (internal spaces) than arteries.

What are the complications of radial artery puncture?


  • Radial artery puncture is frequently performed in many EDs. …
  • Common complications after radial artery cannulation include temporary radial artery occlusion (19.7%), hematoma (14.4%), infection (0.72%), hemorrhage (0.53%), and bacteremia (0.13%).


Which artery is used for ABG?

The radial, brachial, and femoral arteries are the sites most commonly punctured for blood gas sampling in adults. The first choice is the radial artery due to its superficial anatomical location. It has good collateral circulation and is not surrounded by structures that could be easily damaged by puncturing.

Can nurses draw arterial blood gases?

The key skill required is arterial blood gas sampling. This has traditionally been the role of the doctor, however by using an education and training package along with a competency-based assessment, nurses can now perform this extended role.

Cardiac cycle