Airway Management

Airway Management: The Life-Saving Imperative

Airway management is the cornerstone of emergency nursing and a high-yield topic for the Certified Emergency Nurse (CEN) exam. It encompasses the assessment, maintenance, and restoration of a patient's airway to ensure adequate oxygenation and ventilation.^[1] Failure to manage a compromised airway is the fastest route to irreversible brain damage or death, making this skill essential for every CEN.^[2]

Foundational Airway and Ventilation Terms

Understanding the foundational terminology is critical for exam success and clinical application.

• Patent Airway: An airway that is open and unobstructed, allowing free passage of air from the environment to the alveoli.
• Compromised Airway: An airway that is partially or completely obstructed by the tongue, foreign body, blood, secretions, or edema.^[3]
• Upper Airway: Includes the nose, mouth, pharynx (nasopharynx, oropharynx, laryngopharynx), and larynx. Obstruction here is often managed with basic maneuvers or supraglottic devices.
• Lower Airway: Includes the trachea, bronchi, and bronchioles. Obstruction here often requires suctioning, bronchodilators, or definitive airway placement.
• Ventilation: The mechanical movement of air into and out of the lungs (tidal volume).^[4]
• Oxygenation: The process of oxygen diffusing from the alveoli into the blood. A patent airway is required for effective oxygenation, but it alone does not ensure it.

The Escalating Airway Management Strategy

The approach to airway management follows a systematic, stepwise escalation from basic to advanced techniques.^[1]

The Universal "Look, Listen, and Feel" Assessment

Before any intervention, the nurse must rapidly assess for signs of airway and breathing compromise.

1. Look: For chest rise and fall, use of accessory muscles (intercostal, suprasternal, sternocleidomastoid), tracheal deviation, and visible trauma or foreign bodies.
2. Listen: For breath sounds, stridor (upper airway obstruction), gurgling (secretions in the airway), or snoring (tongue obstruction).
3. Feel: For air movement against your cheek or hand placed near the patient’s mouth/nose.

Basic Airway Maneuvers

These are the first-line, non-invasive interventions for a compromised airway.

• Head-Tilt, Chin-Lift: The primary maneuver for non-trauma patients. Repositions the tongue, the most common cause of obstruction.^[1]
• Jaw-Thrust: The preferred maneuver for any patient with a suspected cervical spine injury. Moves the jaw forward without manipulating the neck.

Adjunctive Airway Devices

When basic maneuvers are insufficient, adjuncts are used to improve patency and support ventilation.^[3]

Airway Assessment and Placement Verification

In the emergency setting, the assessment of airway management is dynamic and continuous.

Primary Assessment (A of ABCDE)

• Level of Consciousness (LOC): An unconscious patient cannot protect their airway. A decreasing LOC is often the first sign of impending airway failure.^[2]
• Voice Quality: A hoarse voice or dysphonia may indicate laryngeal edema or obstruction.
• Stridor: A high-pitched, crowing sound heard on inspiration; indicates a critical upper airway obstruction requiring immediate intervention.
• Trauma: Inspect for facial fractures, laryngeal injury, or tracheal deviation.

Confirming Advanced Airway Placement

The gold standard for confirming and continuously monitoring proper endotracheal tube (ETT) placement is Waveform Capnography.^[5]

• Primary Confirmation: Presence of a sustained waveform and CO₂ reading (ETCO₂) after 6 breaths.
• Secondary Confirmation: Auscultation of bilateral breath sounds and absence of breath sounds over the epigastrium. Note: This is less reliable than capnography.
• Chest X-Ray: Confirms the depth of the tube (tip 2-4 cm above the carina), but is not a confirmation of placement.

BLS and Rapid Sequence Intubation

Basic Life Support (BLS) Interventions

Every emergency nurse must be proficient in BLS. The AHA emphasizes high-quality CPR with a focus on minimizing interruptions in chest compressions.^[6]

• Deliver a ventilation over 1 second, ensuring visible chest rise.
• If an advanced airway is in place, provide 1 breath every 6 seconds (10 breaths/minute) without pausing compressions.^[6]

Definitive Airway Management

Rapid Sequence Intubation (RSI) is the standard of care for emergency airway management.^[2] The nurse's role during RSI is critical and includes:

1. Preparation: Gather and check all equipment (ETT, laryngoscope, suction, bag-valve-mask, securing device).
2. Pre-oxygenation: Administer 100% O₂ for 3-5 minutes to denitrogenate the lungs and create an oxygen reserve.
3. Pretreatment: Administer medications to blunt the physiologic response to intubation (e.g., lidocaine, fentanyl, defasciculating dose of paralytic).
4. Paralysis and Induction: Administer a sedative (e.g., etomidate, ketamine) immediately followed by a paralytic (e.g., succinylcholine, rocuronium).
5. Post-intubation Management: Immediately confirm placement with capnography, secure the tube, set ventilator settings, and obtain a chest X-ray.

Detecting and Managing Airway Complications

Airway management is a high-risk, high-reward procedure. The emergency nurse must be vigilant for the following:

• Esophageal Intubation: Immediate detection requires continuous waveform capnography. Absence of CO₂ after 6 breaths is a critical finding.^[5]
• Right Mainstem Intubation: The right main bronchus is more vertical. This leads to hypoxemia and risk of pneumothorax. Assess for absent breath sounds on the left and treat by pulling the ETT back.
• Aspiration: Gastric contents entering the lung can cause chemical pneumonitis (Mendelson's syndrome) and pneumonia. Suction should be immediately available at the bedside.^[3]
• Hypoxia: Desaturation during intubation attempts. The nurse should track the patient's SpO₂ and alert the team if it drops below 90%, signaling the need to stop and ventilate the patient.^[2]

Critical Airway Knowledge for the CEN Exam

• The Jaw-Thrust maneuver is the hallmark CEN answer for any trauma patient with a suspected spinal injury.
• Waveform Capnography is the single most testable method for confirming and monitoring ETT placement.
• An OPA is for the unconscious patient without a gag reflex; an NPA is for the semi-conscious patient with a gag reflex.
• Stridor = upper airway obstruction = critical. Be ready for immediate intervention.
• During RSI, know the nurse's primary role: pre-oxygenation, administering medication, and monitoring the patient's vital signs and capnography.
• Memory Aid for RSI: The "7 Ps" — Preparation, Pre-oxygenation, Pretreatment, Paralysis & Induction, Protection (cricoid pressure-now controversial), Placement, and Post-intubation management.

References & Sources

1. American Heart Association. (2020). Advanced Cardiac Life Support (ACLS) Provider Manual. https://doi.org/10.1016/j.jemermed.2020.11.002
2. Emergency Nurses Association. (2020). Sheehy's Emergency Nursing: Principles and Practice (8th ed.). Elsevier. https://www.ena.org/publications
3. Urden, L. D., Stacy, K. M., & Lough, M. E. (2020). Critical Care Nursing: Diagnosis and Management (9th ed.). Mosby. https://doi.org/10.1016/C2018-0-04649-2
4. Guyton, A. C., & Hall, J. E. (2021). Textbook of Medical Physiology (14th ed.). Elsevier. https://doi.org/10.1016/C2018-0-04650-9
5. American Society of Anesthesiologists Task Force on Emergency Airway Management. (2022). Practice guidelines for management of the difficult airway: An updated report. Anesthesiology, 136(1), 31–81. https://doi.org/10.1097/ALN.0000000000004048
6. American Heart Association. (2020). Basic Life Support (BLS) Provider Manual. https://cpr.heart.org/en/resuscitation-science