Endotracheal Intubation and Advanced Airway Placement - NREMT: Paramedic Level

Cormack-Lehane Grade IV. Denotes the most difficult view with no identifiable laryngeal anatomy, predicting high intubation failure risk.

Continuous waveform capnography (ETCO$2$ waveform). Offers continuous, objective monitoring of exhaled CO2 to confirm tracheal placement and detect complications like dislodgement.

Tracheal ring "clicks" or distal "hold-up". Provides haptic feedback confirming tracheal entry, as the esophagus lacks rigid rings and distal obstruction.

Nasal cannula oxygen left on during apnea. Delivers passive oxygenation via nasal prongs to maintain oxygen diffusion into alveoli during apneic periods.

Bougie (tracheal tube introducer). Facilitates blind or semi-blind intubation by providing a flexible guide that follows anterior tracheal anatomy in limited views.

Head-elevated laryngoscopy position (ear-to-sternal notch). Aligns the oral, pharyngeal, and tracheal axes to improve glottic exposure and reduce intubation difficulty in non-obese patients.

Manual in-line stabilization with neutral alignment. Minimizes cervical motion to prevent secondary spinal injury while allowing airway access in trauma patients.

Increase oxygen reserve and delay desaturation. Replaces alveolar nitrogen with oxygen, extending safe apnea time during laryngoscopy and intubation attempts.

External laryngeal manipulation (e.g., BURP). Applies targeted pressure to align laryngeal structures, enhancing glottic visualization while maintaining cervical spine stability.

1 breath every 6 seconds (10 breaths/min) with continuous CPR. Supports adequate oxygenation without interrupting chest compressions, aligning with resuscitation guidelines for arrested patients.

Two-person BVM with good seal and appropriate tidal volume. Enhances mask seal and controls volume to minimize gastric insufflation and regurgitation during pre-intubation ventilation.

Suspected basilar skull fracture or severe facial trauma. Increases risk of cribriform plate penetration or intracranial insertion due to disrupted facial and cranial anatomy.

Intact gag reflex. Indicates patient consciousness, risking airway obstruction or aspiration from gag-induced vomiting upon insertion.

Supraglottic airway (e.g., i-gel, King, LMA) per protocol. Provides an alternative extraglottic ventilation pathway, bypassing glottic visualization challenges in failed intubation attempts.

Suction the oropharynx (SALAD approach as needed). Clears contaminants to restore visualization, with SALAD technique optimizing suction during ongoing airway management.

Commercial tube holder or tape with documented depth. Prevents accidental extubation by stabilizing the tube at a measured depth, ensuring consistent tracheal positioning.

Decreased venous return and reduced cardiac output. Causes positive intrathoracic pressure, impeding preload and potentially leading to hypotension in critically ill patients.

Withdraw ETT slightly and reassess breath sounds and ETCO$2$. Repositions the tube above the carina to achieve bilateral lung ventilation, confirmed by equal breath sounds.

Absent or markedly decreased left breath sounds. Occurs due to the tube advancing into the right bronchus, bypassing the left lung and causing unilateral ventilation.

Tube dislodgement or disconnection. Often results from patient movement or transport, interrupting the capnography circuit and requiring immediate reassessment.

Reassess, ventilate, and re-confirm; consider displacement. Addresses potential discrepancies between visual and capnographic confirmation, prioritizing re-evaluation to ensure proper placement.

Absent or rapidly decaying ETCO$2$ waveform. Reflects lack of CO2 detection from the lungs, distinguishing esophageal from tracheal placement in patients with adequate perfusion.

Cormack-Lehane Grade I. Represents the optimal view where the entire glottic opening is visible, facilitating easier endotracheal tube passage.