During CPR the correct hand placement over the chest for chest compressions?

WCL Staff Nurse - 2019

Medical & Surgical Nursing

Easy

Appeared in: WCL Staff Nurse - 2019

Explanation

The correct hand placement for chest compressions in an adult is the center of the chest, over the lower half of the sternum.
This position is anatomically ideal because it allows the rescuer to compress the heart between the sternum and the spine, which is necessary to circulate oxygenated blood.
Placing hands on the lower half of the sternum avoids the fragile xiphoid process at the bottom and the less effective compression area at the top.
As shown in the image, this landmark is typically found between the nipples.

Option A: Compressing on the upper half of the sternum is ineffective. The force is not transmitted efficiently to the heart's ventricles, leading to poor blood circulation.
Option B: Similar to the upper half, the upper third of the sternum is too high. Compressions in this area will not adequately compress the heart to generate sufficient cardiac output.
Option D: This location is incorrect and dangerous. The lower third of the sternum includes the xiphoid process. Pressure on the xiphoid can cause it to fracture and lacerate the liver or spleen, leading to life-threatening internal bleeding.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Cardiopulmonary Resuscitation (CPR) Technique as background academic context rather than a clinical decision trigger.
Correct hand placement is a fundamental, life-saving skill in Basic Life Support (BLS). Improper placement can render CPR ineffective or cause severe iatrogenic injury.
Nurses must be able to rapidly and accurately identify this landmark in an emergency to initiate high-quality CPR without delay.
During resuscitation, team members may provide feedback on hand placement to ensure CPR quality is maintained.

How to Approach the Question

First, identify that the question is asking for a specific, critical detail of a medical procedure: hand placement for CPR.
Recall the anatomical structures of the chest, including the sternum, ribs, heart, and underlying organs like the liver.
The goal of CPR is to compress the heart. Visualize where the heart is located relative to the sternum (centrally, under the middle to lower part).
Evaluate each option based on effectiveness and safety.
Eliminate the upper portions of the sternum as they are not directly over the heart's main chambers, making them ineffective.
Eliminate the lowest portion (lower third) because it includes the xiphoid process, and compressing it is known to be dangerous.

Concept Tested & Keywords

Concept Tested: Cardiopulmonary Resuscitation (CPR) Technique
Stem keywords: CPR, chest compressions, hand placement, sternum
Lead-in keywords: correct
Clinical cues: The image provided visually confirms the correct hand placement on the lower half of the sternum.

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