What are the guidelines for rescue breathing during adult CPR according to AHA BLS guidelines?

DSSSB 6 September 2024

Medical & Surgical Nursing

Easy

Appeared in: DSSSB 6 September 2024

Explanation

According to the American Heart Association (AHA) 2020 guidelines, for an adult in respiratory arrest (has a pulse but is not breathing), rescue breaths should be given at a rate of 1 breath every 6 seconds.
This rate equates to 10 breaths per minute.
This specific rate is crucial to provide adequate oxygenation without causing hyperventilation.
Hyperventilation increases intrathoracic pressure, which can decrease venous return, lower cardiac output, and reduce survival rates.

Option A: A rate of one breath every four seconds (15 breaths/minute) is too rapid for an adult and increases the risk of hyperventilation and its associated complications, such as decreased cardiac output.
Option B: A rate of one breath every three seconds (20 breaths/minute) is the upper end of the recommended rate for infants and children, not adults. Using this rate on an adult would cause hyperventilation.
Option D: A rate of one breath every two seconds (30 breaths/minute) is excessively fast for an adult. It would lead to severe hyperventilation, a significant increase in intrathoracic pressure, and a dangerous reduction in blood flow to the heart.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain AHA BLS guidelines for adult rescue breathing as background academic context rather than a clinical decision trigger.
Correctly performing rescue breathing is a critical skill for nurses to prevent further deterioration in a patient with respiratory arrest. Adhering to the correct rate is vital for patient safety.
Avoiding hyperventilation is a key principle in resuscitation. It prevents increased intrathoracic pressure, which can impede venous return and reduce the effectiveness of chest compressions if CPR becomes necessary.
What if? If the patient had no pulse and was not breathing, the protocol would change to full CPR, with a compression-to-ventilation ratio of 30:2, rather than just rescue breathing.

How to Approach the Question

First, identify the key elements of the question: 'rescue breathing', 'adult CPR', and 'AHA BLS guidelines'.
The question asks for a specific rate, so focus on recalling the numerical guidelines.
Differentiate the guidelines for adults from those for children and infants, as this is a common point of confusion.
Recall that for an adult with a pulse but no breathing, the rate is slower to avoid hyperventilation. The correct rate is 1 breath every 6 seconds.
Calculate the total breaths per minute: 60 seconds / 6 seconds per breath = 10 breaths per minute.
Compare this with the given options to find the correct match.

Concept Tested & Keywords

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