ABA Airway Management 3

Question 1

Which finding on capnography most reliably confirms correct tracheal placement of an endotracheal tube?

Accepted Answer

A persistent end-tidal CO2 waveform over multiple breath cycles

Answer

Unilateral chest rise on auscultation

Answer

Improvement in pulse oximetry reading within 30 seconds

Answer

Fogging of the endotracheal tube during exhalation

Question 2

What is the recommended first-line management for complete laryngospasm occurring during emergence from anesthesia?

Accepted Answer

Positive pressure ventilation with 100% O2 and application of bilateral Larson's maneuver

Answer

Immediate oral airway insertion and cricothyrotomy preparation

Answer

Intravenous atropine 0.5 mg to reduce secretions

Answer

Immediate reintubation under direct laryngoscopy

Question 3

Post-extubation stridor occurring in the immediate recovery period in an adult patient is most commonly caused by:

Accepted Answer

Laryngeal edema from the endotracheal tube cuff

Answer

Bilateral vocal cord paralysis from the surgical procedure

Answer

Acquired subglottic stenosis

Answer

Tracheomalacia

Question 4

For a patient with a suspected full stomach requiring emergency general anesthesia, which technique represents the current standard of care for airway management?

Accepted Answer

Rapid sequence induction with cricoid pressure and succinylcholine

Answer

Awake fiberoptic nasotracheal intubation

Answer

Inhalational induction with sevoflurane followed by intubation

Answer

Insertion of a proseal LMA as the primary airway device

Question 5

Right mainstem bronchus intubation is most reliably identified by which of the following clinical findings?

Accepted Answer

Absent breath sounds on the left with decreased SpO2

Answer

Bilateral decreased breath sounds

Answer

High peak airway pressures with normal breath sounds

Answer

Increased end-tidal CO2 with stable oxygen saturation

Question 6

During anesthesia induction, bronchospasm is BEST managed initially with which of the following approaches?

Accepted Answer

Deepen anesthesia and administer inhaled bronchodilators via the breathing circuit

Answer

Immediately extubate and apply a facemask

Answer

Increase the ventilatory rate to reduce CO2 accumulation

Answer

Administer IV epinephrine 1 mg as first-line therapy

Question 7

In a 'cannot intubate, cannot oxygenate' (CICO) emergency, what is the definitive management step according to the ASA Difficult Airway Algorithm?

Accepted Answer

Emergency invasive airway access via cricothyrotomy or tracheostomy

Answer

Persistent reattempts with alternative laryngoscopy blades until success

Answer

Supraglottic airway insertion as the sole rescue intervention

Answer

Awakening the patient and scheduling elective tracheostomy