ACLS ACLS Airway Management and Ventilation 2 — Questions and Answers
Question 1: What is the purpose of cricoid pressure (Sellick maneuver) during intubation?
- To reduce the risk of passive regurgitation and aspiration (Correct answer)
- To open the vocal cords for easier intubation
- To increase oxygen saturation before intubation
- To stabilize the cervical spine
Correct answer: To reduce the risk of passive regurgitation and aspiration
Cricoid pressure occludes the esophagus against the vertebral body to reduce the risk of passive regurgitation during intubation, though its routine use is debated.
Question 2: Which sign indicates that a supraglottic airway (e.g., LMA) is appropriately placed?
- Bilateral chest rise and breath sounds with minimal leak (Correct answer)
- End-tidal CO₂ waveform identical to ETT
- No air entry heard over the epigastrium
- SpO₂ above 95%
Correct answer: Bilateral chest rise and breath sounds with minimal leak
Bilateral chest rise and equal breath sounds with minimal air leak confirm appropriate supraglottic airway placement.
Question 3: In ACLS, what FiO₂ should be used during resuscitation (before ROSC)?
- 100% oxygen (FiO₂ = 1.0) (Correct answer)
- 40% oxygen
- 21% (room air)
- 60% oxygen
Correct answer: 100% oxygen (FiO₂ = 1.0)
During cardiac arrest resuscitation, 100% oxygen should be used to maximize oxygen delivery to vital organs.
Question 4: How should ventilation be adjusted after ROSC to prevent hyperoxia?
- Titrate FiO₂ to maintain SpO₂ 92–98% (Correct answer)
- Continue 100% O₂ indefinitely
- Reduce to room air immediately
- Target SpO₂ above 99%
Correct answer: Titrate FiO₂ to maintain SpO₂ 92–98%
After ROSC, titrate FiO₂ to maintain SpO₂ of 92–98% to avoid both hypoxia and hyperoxia-related injury.
Question 5: During two-rescuer bag-mask ventilation, how should the mask be held?
- One rescuer uses both hands in E-C clamp technique to seal mask; second rescuer squeezes bag (Correct answer)
- Both rescuers squeeze the bag simultaneously
- One rescuer holds the mask with one hand, the other holds the jaw
- The mask is placed loosely over the face
Correct answer: One rescuer uses both hands in E-C clamp technique to seal mask; second rescuer squeezes bag
In two-rescuer BVM, the first rescuer uses the E-C clamp with both hands for an effective mask seal while the second rescuer squeezes the bag.
Question 6: What is the maximum recommended duration for an intubation attempt before pausing to re-oxygenate the patient?
- 10 seconds (Correct answer)
- 30 seconds
- 60 seconds
- 2 minutes
Correct answer: 10 seconds
Each intubation attempt should be limited to 10 seconds to prevent prolonged hypoxia; re-oxygenate between attempts.
ACLS ACLS Airway Management and Ventilation 2
What is the purpose of cricoid pressure (Sellick maneuver) during intubation?