Arterial Blood Gases . prepared by: Salwa Maghrabi Teacher Assistant Nursing Department . Outlines . Definition of the arterial blood gases. Indications of the arterial blood gases . Contraindications and cautions of the arterial blood gases. The deferent between the artery and vein .
1- Evaluate acute respiratory distress and assist in determine therapeutic interventions.
2- Evaluate the effectiveness of respiratory intervention.
3- Document the existence and severity of a problem with oxygenation or carbon dioxide exchange.
4- Analyze acid – base balance.
1- Previous surgery in the artery
2- Patient with anticoagulant or with known coagulopathy.
3- Skin infection or damage of the skin .
4- Decrease collateral circulation.
5- Sever atherosclerosis
6- Serious injury to the extremity.
7- Fibrinolytic therapy.
8- Patient with femoral graft or cellulites
9- Patients who have had a cardiac catheterization via the brachial rout or who have sclerotic vessels.
Redial artery , Brachial artery
5- if redial artery is chosen , performing modified Allen’s test is optional :
6- position the extremity
1- prepare the syringe ( if not preheparinized ) .
2- Palpate the pulse and determine the point of maximal impulse.
3- Local anesthesia may be useful in anxious patient .
4- clean the over lying skin with antiseptic solution .
5- Use the index finger of your free hand to palpate the arterial pulse just proximal to the puncture site .
6- grasp the needle as if holding a pencil, direct the needle with bevel up , and puncture the skin slowly .
7- When the blood appears stop advance the needle and allow the blood to flow freely into the syringe .
8- Obtain a sample of 1 to 2 ml , remove the needle from the artery , immediately apply the direct pressure to the puncture site with dry gauze for 2 to 3 minute .
a) Prepare the blood sample for the laboratory by immediately expelling the air bubbles.
b) Activate the needle stick safety device and remove the needle .
c) Label the syringe .