A nurse is performing cardiopulmonary resuscitation (CPR) on a 3-month-old infant who became unresponsive during a routine examination. Which action should the nurse perform first when initiating infant CPR?

The first step in infant CPR is to assess responsiveness and breathing while calling for help, following pediatric BLS guidelines. Other options (immediate compressions, airway opening, rescue breaths) are subsequent steps after this initial assessment.

Core Nursing Explanation Key Concept Analysis: This question tests the correct sequence for initiating Cardiopulmonary Resuscitation (CPR) on an infant. The core principle is the universal C-A-B (Compressions, Airway, Breathing) sequence for healthcare providers, which is preceded by a critical initial step: ensuring the scene is safe and quickly assessing the patient. For a healthcare provider finding an unresponsive infant, the immediate action is a Key Point! simultaneous assessment and activation of the emergency response system.

Answer Rationale: The correct answer is Check for responsiveness and breathing while simultaneously calling for help. According to the American Heart Association (AHA) guidelines for healthcare providers, the first step upon encountering an unresponsive infant is to check for responsiveness (tap and shout) and simultaneously look for signs of normal breathing (scanning the chest for movement) for no more than 10 seconds. If the infant is unresponsive and not breathing or only gasping, the rescuer should immediately activate the emergency response system (call for help/get an AED) while beginning CPR. This integrated step ensures help is on the way without delaying the start of lifesaving interventions.

Distractor Analysis: Watch out for confusion! Option ② (Begin chest compressions immediately) is incorrect because it skips the crucial initial assessment. While compressions are the first skill in the C-A-B sequence, you must first confirm the infant is unresponsive and not breathing normally. Starting compressions on a sleeping or breathing infant is harmful.
Option ③ (Open the airway) is a step in the sequence but not the first. The airway is opened after determining unresponsiveness and initiating compressions in the C-A-B sequence (Airway is the 'A').
Option ④ (Provide two rescue breaths) is also a subsequent step. Rescue breaths are the 'B' in C-A-B and are performed after 30 compressions (for a single rescuer) or 15 compressions (for two rescuers) in infant CPR.

Related Concepts: It's vital to differentiate between the lay rescuer and healthcare provider sequences. For a lay rescuer who witnesses a sudden collapse in an infant/child, the sequence may differ (e.g., provide 2 minutes of CPR before calling for help if alone). However, for a healthcare provider in any setting (like a nurse in a clinic), the guideline is to assess and activate simultaneously. Also, remember the compression-to-ventilation ratio for infant CPR: 30:2 for a single rescuer and 15:2 for two rescuers.

Concept Summary

Concept	Key Takeaway
Infant CPR Sequence (HCP)	1. Assess responsiveness & breathing (≤10 sec). 2. Activate emergency response (call for help). 3. Begin C-A-B: Compressions first.
C-A-B Sequence	Compressions → Airway (head-tilt/chin-lift) → Breaths (2 rescue breaths).
Infant Compression Technique	Two fingers (single rescuer) or two-thumb encircling hands (two rescuers) on the lower half of the sternum. Depth: about 1.5 inches (4 cm).
Activation of EMS	For healthcare providers, activate immediately upon finding an unresponsive victim, regardless of age.

Side-by-Side Comparison!

Step	Infant (0-1 year) - Healthcare Provider	Adult - Healthcare Provider
Initial Action	Check responsiveness & breathing. Simultaneously call for help/get AED.	Check responsiveness & breathing. Simultaneously call for help/get AED.
Compression Landmark	Lower half of the sternum (just below nipple line).	Center of the chest, on the lower half of the sternum.
Compression Method	Two fingers (1 rescuer) or two-thumb encircling (2 rescuers).	Heel of one hand, other hand on top.
Compression Depth	About 1.5 inches (4 cm).	At least 2 inches (5 cm).
Compression:Ventilation Ratio (1 rescuer)	30 compressions : 2 breaths	30 compressions : 2 breaths
Compression:Ventilation Ratio (2 rescuers)	15 compressions : 2 breaths	30 compressions : 2 breaths

Anatomy, Physiology & Pharmacology Points The goal of CPR is to manually create blood flow (perfusion) to the heart and brain during cardiac arrest. Effective chest compressions generate cardiac output by increasing intrathoracic pressure and directly compressing the heart between the sternum and spine. In infants, the heart is positioned higher in the chest, and the liver is relatively large, making correct hand placement crucial to avoid abdominal injury. The head-tilt/chin-lift maneuver opens the airway by lifting the tongue away from the posterior pharynx.

Memory Tips

• Sequence Mnemonic: "Respond, Activate, C-A-B" (RAC-CAB).
• Infant Compression Depth: Think "One and a half fingers" (relating to the ~1.5 inch depth and the two-finger technique).
• Ratio for Two Rescuers (Infant): "One-five to stay alive" (15:2 ratio).

High-Frequency NCLEX Topics CPR sequence and techniques are High Yield topics. The NCLEX-RN loves to test: 1) The correct first step (assessment/activation), 2) Age-specific differences (infant vs. child vs. adult), 3) Correct compression landmarks and depths, and 4) Compression-to-ventilation ratios. Always identify if the scenario involves a lay rescuer or a healthcare provider, as this changes the action plan.

Watch Out for Question Variations!

• Instead of "first action," they may ask: "The nurse has confirmed the infant is unresponsive and not breathing. What is the priority nursing intervention?" (Answer: Begin chest compressions – this tests the C-A-B sequence after the initial assessment is complete).
• Scenario change: "A parent brings an unresponsive infant to the clinic. The nurse is alone." This tests the same principle: assess and call for help simultaneously.
• They may ask about the correct hand position for infant compressions for a single rescuer vs. two rescuers.

Nursing Clinical Practice Guide Clinical Scenario: You are a pediatric clinic nurse. During a well-baby visit for a 3-month-old, the mother becomes distracted, and you notice the infant in the car seat appears pale and motionless. You quickly unbuckle and bring the infant to the examination table.

Nursing Intervention Strategy:

1. Assessment & Activation (First 10 seconds): Tap the infant's foot and shout "Baby, are you okay?" Simultaneously, look at the chest for rise and fall. Do not see normal breathing. While maintaining visual contact, shout loudly for help to your colleagues in the clinic: "I need help in room 3, infant code, bring the crash cart and AED!"
2. Begin C-A-B:
   • C (Compressions): Place the infant on a firm, flat surface (back of examination table or floor). Using two fingers, compress the lower half of the sternum (just below the nipple line) at a rate of 100-120/min to a depth of about 1.5 inches. Count out loud: "One, two, three..."
   • A (Airway): After 30 compressions, open the airway using the head-tilt/chin-lift maneuver. In an infant, tilt the head to a neutral or sniffing position (avoid hyperextension).
   • B (Breathing): Give 2 effective rescue breaths using a bag-mask device with a tight seal. Each breath should last about 1 second and make the chest rise visibly.
3. Continue Cycles & Team Response: Continue cycles of 30 compressions and 2 breaths. When help arrives, transition to the two-rescuer technique (15:2 ratio) and prepare for Advanced Cardiac Life Support (ACLS) interventions.

Patient Safety and Precautions:

• Avoid Gastric Insufflation: Deliver breaths slowly (over 1 second) with only enough volume to make the chest rise. Forceful breaths can cause vomiting and aspiration.
• Minimize Interruptions: Limit pauses in compressions to less than 10 seconds. Compressions generate critical blood flow.
• Correct Surface: Never perform effective compressions on a soft surface (like a crib mattress). Place the infant on a firm, flat surface.

Nursing Procedure & Medication Flow In a code situation, the nurse's role often includes:

• Compressor/Ventilator: Performing high-quality CPR as described.
• Medication Nurse: If assigned, preparing and administering emergency drugs like Epinephrine. For infant IV/IO (intravenous/intraosseous) dosing, know the weight-based calculation (0.01 mg/kg of 1:10,000 solution).
• Documentation: The code nurse records all events, interventions, medications, and rhythms accurately and in real-time.

A Word from Your Senior Nurse "In a pediatric emergency, your calm and systematic response is everything. That initial step of checking and calling seems simple, but it sets the entire resuscitation in motion. In the real world, your brain might scream 'DO SOMETHING!' and the urge to jump straight to compressions is strong. But remember: assessing ensures you're treating the right problem, and calling ensures you're not alone. On the NCLEX and in practice, your first action is always to quickly recognize the problem and recruit resources. You are the team leader until the code team arrives. Know your BLS algorithms cold – they are the foundation that saves lives."