A client came into OPD and doctor needs for assessment of Arterial blood gas analysis. Which artery should us… - AIIMS Rishikesh & Jodhpur NO - 2017

AIIMS Rishikesh & Jodhpur NO - 2017

Medical Surgical Nursing

Easy

Appeared in: AIIMS Rishikesh & Jodhpur NO - 2017

Explanation

The radial artery is the most common and preferred site for obtaining an arterial blood sample.
It is superficially located at the wrist, making it easy to palpate and access.
The hand has a dual blood supply from both the radial and ulnar arteries. This collateral circulation minimizes the risk of ischemia if the radial artery is damaged during the procedure.
The artery can be firmly compressed against the underlying radius bone after the procedure to prevent hematoma formation.

Option B: The brachial artery is a secondary site. It is deeper, located closer to the median nerve (increasing risk of nerve damage), and has poorer collateral circulation compared to the radial artery.
Option C: The femoral artery is generally considered a last resort. It is a large, deep artery, and its puncture carries a higher risk of infection, major bleeding (hemorrhage), and dislodging atherosclerotic plaques.
Option D: The carotid artery is not used for routine ABG sampling. Puncturing this artery carries a very high risk of severe complications, including stroke (from plaque dislodgement or thrombosis) and airway compromise from a hematoma.

Clinical Relevance

Nursing practice connection: Use the key finding related to Site selection for Arterial Blood Gas (ABG) analysis to guide bedside assessment, documentation, and the next nursing action.
A crucial nursing responsibility before a radial artery puncture is to perform the Allen's test to ensure patient safety. A positive test (color returns to the hand within 5-15 seconds) confirms adequate collateral flow from the ulnar artery.
After the sample is drawn, the nurse must apply firm pressure to the puncture site for at least 5 minutes (longer if the patient is on anticoagulants) to prevent bleeding and hematoma formation.
What if? If the Allen's test is negative (color does not return promptly), the procedure must not be performed on that wrist. The nurse should then assess the other wrist or notify the provider to consider an alternative site like the brachial artery.

How to Approach the Question

Identify the core question, which asks for the standard site for ABG analysis.
Recall the common arterial access sites in the body: radial, brachial, femoral, etc.
Evaluate each option based on the criteria of safety, accessibility, and risk of complications for this specific procedure.
The radial artery is known for its superficial location and collateral circulation, making it the safest and most common choice.
Eliminate the brachial and femoral arteries as they are secondary choices with higher risks.
Recognize that the carotid artery is contraindicated for this procedure due to the severe risk of neurological complications.

Concept Tested & Keywords

Concept Tested: Site selection for Arterial Blood Gas (ABG) analysis
Stem keywords: Arterial blood gas analysis, assessment, artery
Lead-in keywords: Which artery should use?
Clinical cues: The care setting changes urgency, monitoring level, and the expected nursing action.

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