During CPR, the depth of chest compression should be?

UP NHM CHO 7 Sept 2022 (Shift-2)

Medical & Surgical Nursing

Easy

Appeared in: UP NHM CHO 7 Sept 2022 (Shift-2)

Explanation

The recommended depth for chest compressions in adults is at least 2 inches (5 cm), according to the American Heart Association (AHA) guidelines.
This specific depth is crucial for generating sufficient intrathoracic pressure to circulate oxygenated blood to the brain and heart, which is the primary goal of CPR.
While pushing hard is important, there is also an upper limit of 2.4 inches (6 cm) to prevent iatrogenic injuries such as rib fractures or damage to internal organs.
Among the given choices, 2 inches is the only option that falls within the correct and safe recommended range for effective CPR.

Option A: A compression depth of 3 inches is excessive and goes beyond the recommended upper limit of 2.4 inches (6 cm). This significantly increases the risk of complications like rib or sternal fractures and internal organ damage.
Option C: A compression depth of 5 inches is extremely dangerous and would likely cause severe, life-threatening trauma to the chest wall, heart, and lungs.
Option D: Similar to 3 inches, a depth of 4 inches is too deep and carries a high risk of causing injury without providing any additional benefit to circulation.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain CPR Chest Compression Depth as background academic context rather than a clinical decision trigger.
Performing high-quality CPR with the correct compression depth is a fundamental and critical skill for all nurses, as it directly impacts patient survival rates following cardiac arrest.
Nurses are often leaders or key members of a resuscitation team and must ensure that all components of CPR (rate, depth, recoil, and minimal interruptions) are performed correctly.
What if? If the patient were an infant (less than 1 year old), the correct compression depth would change to approximately 1.5 inches (4 cm), or one-third the depth of the chest, and would be performed using two fingers or the two-thumb-encircling hands technique.

How to Approach the Question

First, identify the core concept of the question, which is the correct procedure for Cardiopulmonary Resuscitation (CPR).
Note the specific parameter being asked: the depth of chest compressions.
Recall the standard Basic Life Support (BLS) guidelines for an adult patient, as this is the default unless another age group is specified.
The guideline for adult compression depth is at least 2 inches (5 cm) but no more than 2.4 inches (6 cm).
Compare this standard to the given options (3, 2, 5, 4 inches).
Select the option that matches the established guideline, which is 2 inches.

Concept Tested & Keywords

QYpN_MWhBTGLrl0ZMVO1qF

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 610-612

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