The objective of BLS include:?

Appeared in: DSSSB Public Health Nurse - 2015

Explanation

The current guideline for Basic Life Support (BLS) for adults, as recommended by major international resuscitation councils, follows the C-A-B sequence.
This sequence prioritizes chest compressions (C) to restore blood circulation to vital organs like the brain and heart with minimal delay.
The full sequence is: C for Compressions, A for Airway, and B for Breathing.
This approach is based on evidence showing that minimizing the time to the first compression significantly improves survival outcomes in cardiac arrest.

Option B: The A-B-C (Airway, Breathing, Circulation) sequence is an outdated guideline for adult BLS.
Option C: The B-A-C (Breathing, Airway, Compressions) sequence is incorrect and not used in any standard resuscitation protocol.
Option D: The B-C-A (Breathing, Compressions, Airway) sequence is also an incorrect and illogical sequence not recognized in any life support guidelines.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Basic Life Support (BLS) Sequence as background academic context rather than a clinical decision trigger.
For a nurse, immediately starting high-quality chest compressions (following the C-A-B sequence) on an unresponsive patient without a pulse is a critical, life-saving intervention that should be performed without hesitation.
The emphasis on 'C' first reinforces that any interruption in chest compressions should be minimized (less than 10 seconds) to maintain perfusion to the brain and heart.
What if the patient is a newborn immediately after birth? In that case, the resuscitation sequence is A-B-C (Airway, Breathing, Circulation), as respiratory arrest is a more common cause of collapse in this population than a primary cardiac event.

How to Approach the Question

Identify the core concept: The question asks for the correct sequence of actions in Basic Life Support (BLS).
Recall the current resuscitation guidelines. Remember that the guidelines were updated to emphasize the importance of circulation.
The key change was to prioritize blood flow. This points to 'C' (Compressions/Circulation) being the first and most important step.
Evaluate the options based on 'C' being the first letter. Only 'CAB' starts with 'C'.
Confirm the rest of the sequence: After starting compressions, the airway is opened (A), and then breathing is supported (B). This confirms C-A-B as the correct answer.

Concept Tested & Keywords

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E6 Ghai Essential Pediatrics(pp 26-904 of 913) pp. 762-764, 763-765

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