In CPR, the compression ventilation ratio is?

Appeared in: VSSC Nursing Officer - 2021

Explanation

The standard compression-to-ventilation ratio for an adult in cardiac arrest is 30 compressions to 2 breaths, regardless of whether one or two rescuers are present.
This 30:2 ratio is also the universal standard for a single rescuer performing CPR on a victim of any age (adult, child, or infant).
The goal is to simplify training and emphasize continuous, high-quality chest compressions with minimal interruptions, as recommended by the American Heart Association (AHA).

Option A: This ratio is not the universal standard for all CPR scenarios.
Option B: This is not a recognized compression-ventilation ratio in current Basic Life Support (BLS) guidelines.
Option D: This is an outdated ratio and is no longer recommended in any current CPR guidelines.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain CPR compression-ventilation ratio as background academic context rather than a clinical decision trigger.
Knowing the correct CPR ratio is a fundamental skill for all healthcare providers to ensure effective resuscitation and improve patient survival rates from cardiac arrest.
The emphasis on a 30:2 ratio for most scenarios simplifies the algorithm, reducing hesitation and promoting the immediate start of high-quality chest compressions.
What if? If the patient has an advanced airway (like an endotracheal tube) in place, the protocol changes. Chest compressions become continuous (100-120 per minute) without pauses, and one breath is given every 6 seconds (10 breaths per minute).

How to Approach the Question

First, identify the core of the question: it's asking for a standard medical protocol, the CPR compression-ventilation ratio.
Notice that the question is general and does not specify the patient's age (adult, child) or the number of rescuers (one or two).
In the absence of specific details, recall the most common or 'default' guideline. The universal ratio for a single rescuer and for all adult CPR is 30:2.
Evaluate the options. '30:2' is the standard default. '15:2' is a specific case (2-rescuer pediatric). '20:2' and '15:1' are incorrect or outdated.
Select the option that represents the most widely applicable and standard ratio.

Concept Tested & Keywords

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

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 3 p. 45-47

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

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