The preferred site for Bone marrow aspiration is?

Appeared in: ISRO- 2016

Explanation

The iliac crest, particularly the posterior superior iliac spine, is the most common and safest site for bone marrow aspiration and biopsy in adults and children.
It is a large, superficial bone, making it easily accessible and minimizing the risk of injury to vital organs or blood vessels, as confirmed in the provided image.
This site provides a rich source of red bone marrow, ensuring a high-quality sample is obtained for diagnostic purposes.

Option A: The humerus is not a standard site for bone marrow aspiration in humans due to its thick cortical bone and the high risk of damaging the radial nerve and other neurovascular structures.
Option B: The femur is not a preferred site in adults or children. The cortical bone is very thick, making access difficult and painful, and there is a risk to the sciatic nerve and femoral artery.
Option D: The tibia is not the preferred site for the general population. Its use is limited to a specific age group.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomical sites for bone marrow aspiration as background academic context rather than a clinical decision trigger.
Nurses play a crucial role in preparing the patient for a bone marrow aspiration, providing support during the procedure, and monitoring for complications like bleeding and infection afterward.
Understanding the correct anatomical site is vital for patient safety, ensuring the viability of the diagnostic sample, and providing accurate patient education.
What if? If the patient were an 8-month-old infant, the preferred site would shift from the iliac crest to the anteromedial surface of the proximal tibia, as the iliac crest is still small and largely cartilaginous at that age.

How to Approach the Question

First, identify the core question: it asks for the 'preferred site' for a specific procedure, 'bone marrow aspiration'.
This is a factual recall question based on standard medical procedures. Access your knowledge of common procedural sites.
Consider the options provided: Humerus, Femur, Iliac crest, Tibia.
Evaluate each option for safety, accessibility, and common practice. The iliac crest is widely known as the primary site for adults and older children.
Consider special populations. While the tibia is a valid site, its use is specific to infants, making the iliac crest the general 'preferred' answer for an unspecified patient.
Select the option that represents the most common, safest, and standard site for the general patient population.

Concept Tested & Keywords

QgqCzCWvjbIZodMXQvtndY

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 3 p. 118-120

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 785-787

Practise the full ISRO- 2016

Attempt every question from this paper in a timed mock, then review the full solution for each one.