AIIMS Delhi NO - 2018
Nursing Foundation
Easy
In Below denote image, it is the puncture site used for?
Appeared in: AIIMS Delhi NO - 2018
Explanation
- The image clearly shows a venipuncture being performed at the antecubital fossa (inner elbow), which is the most common site for routine blood collection.
- The equipment used is a vacutainer system with a collection tube, which is standard for routine blood sampling, not for the other procedures listed.
- The angle of needle insertion (15-30 degrees) and the location are characteristic of drawing venous blood.
Why Other Options Were Wrong
- Option A: ABG sampling is performed on an artery, typically the radial artery at the wrist, not a vein in the antecubital fossa.
- Option C: CSF sampling involves a lumbar puncture in the lower back to collect cerebrospinal fluid.
- Option D: AST (Antibiotic Sensitivity Testing) is an intradermal injection on the forearm to test for allergies, not a blood draw.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of common clinical procedures, specifically venipuncture for routine blood sampling as background academic context rather than a clinical decision trigger.
- Correctly identifying the procedure and site is crucial for patient safety and sample integrity. Using an artery for a routine test or a vein for an ABG would lead to incorrect results and potential patient harm.
- Nurses must be proficient in selecting the appropriate site for venipuncture, avoiding areas with IV lines, fistulas, or hematomas to ensure a quality sample and prevent complications.
- What if? If the patient had an IV line running in the arm shown, the nurse should choose a different site for the blood draw, preferably on the other arm or a site distal to the IV infusion after stopping the infusion for a few minutes, to avoid sample contamination with IV fluids.
How to Approach the Question
- First, carefully analyze the image provided. Identify the anatomical location where the procedure is being performed (in this case, the inner elbow or antecubital fossa).
- Next, observe the equipment being used. Note the presence of a vacutainer holder and a blood collection tube.
- Consider the technique shown. The needle is inserted into a vessel to draw blood.
- Evaluate the given options based on your observations. Compare the location, equipment, and technique with the standard procedures for ABG sampling, routine blood sampling, CSF sampling, and AST testing.
- Eliminate the options that do not match. CSF sampling and AST testing are clearly incorrect based on location and procedure type.
- Differentiate between ABG sampling (arterial) and routine blood sampling (venous). The location (antecubital vein) and equipment (vacutainer) are characteristic of routine venous blood sampling.
Concept Tested & Keywords
- Concept Tested: Identification of common clinical procedures, specifically venipuncture for routine blood sampling.
- Stem keywords: puncture site, image
- Lead-in keywords: used for
- Clinical cues: Image shows a procedure at the antecubital fossa.
- Clinical cues: Image shows a vacutainer system with a red-topped tube.
Question ID
QD6oPvivcyRV9tyzkUEIqM
Reference Book
E6 textbook of Applied Biochemistry and Nutrition & DieteticsHarbans Lal (pp 26-464 of 479) p. 217-219
E6 Pathology-Vandana Puri & Kavita Gaur Textbook of Pathology and Genetics p. 382-384
E6 Nursing Fundamentals Potter Perry 12e Part 5 p. 79-81
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