A nurse is performing CPR on an adult patient. When performing chest compressions, the nurse understands the correct hand placement is located over the:

1. A

   Upper half of the sternum

2. B

   Upper third of the sternum

3. C

   Lower half of the sternum

4. D

   Lower third of the sternum

Appeared in: OSSSC Nursing Officer-2023

Explanation

• Correct hand placement for adult CPR is on the lower half of the sternum, in the center of the chest.
• This position allows for direct compression of the heart, particularly the ventricles, which is necessary to circulate oxygenated blood to the brain and other vital organs.
• It provides a firm, stable surface for compressions while minimizing the risk of injury to surrounding structures like the xiphoid process.

Why Other Options Were Wrong

• Option A: Compressing the upper half of the sternum is ineffective as it is too high to adequately compress the heart's ventricles.
• Option B: The upper third of the sternum is also too high on the chest, resulting in poor force transmission to the heart and ineffective circulation.
• Option D: This placement is dangerous as it is too close to the xiphoid process. Pressure here can cause the xiphoid to fracture and damage underlying organs like the liver.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Correct hand placement for adult CPR chest compressions to guide bedside assessment, documentation, and the next nursing action.
• Correct hand placement is a critical skill that directly impacts the effectiveness of CPR and patient survival rates. Improper placement can lead to ineffective compressions or severe iatrogenic injuries.
• During resuscitation, nurses must ensure compressions are performed on a hard surface (e.g., by placing a backboard under the patient) to maximize effectiveness and prevent the force from being absorbed by a soft mattress.
• What if? If the patient were an infant, the technique would change to the two-finger or two-thumb encircling hands technique on the lower half of the sternum, just below the nipple line, with a much shallower compression depth (about 1.5 inches or 4 cm).

How to Approach the Question

• Identify the core of the question: It asks for the precise anatomical location for hand placement during adult CPR.
• Recall the principles of CPR: The goal is to manually pump the heart. This requires placing force directly over the heart.
• Visualize the chest anatomy: The heart lies in the center of the chest, slightly to the left, underneath the sternum. The most substantial part of the heart (the ventricles) is under the lower half of the sternum.
• Consider safety: Recall warnings associated with CPR, specifically the danger of pressing on the xiphoid process at the bottom of the sternum.
• Evaluate the options: The 'lower half of the sternum' aligns with both effectiveness (over the heart) and safety (away from the xiphoid process). The other options are either ineffective (too high) or dangerous (too low).

Concept Tested & Keywords

• Concept Tested: Correct hand placement for adult CPR chest compressions
• Stem keywords: CPR, adult patient, chest compressions, hand placement, sternum
• Lead-in keywords: correct
• Clinical cues: adult patient
• Negative lead-in flag: false

Question ID

Q-34ZluZny5y1FcZIuarMv

Copy ID

Reference Book

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 3 p. 46-48

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 763-765