ABA Emergency Response Procedures 2

Question 1

A patient under general anesthesia develops sudden bradycardia (HR 28 bpm) with hypotension. What is the FIRST drug to administer?

Accepted Answer

Atropine 0.5–1 mg IV

Answer

Epinephrine 1 mg IV

Answer

Vasopressin 40 units IV

Answer

Norepinephrine infusion

Question 2

During a difficult airway emergency, after two failed intubation attempts, the patient's SpO2 drops to 82%. What is the next best step per the ASA Difficult Airway Algorithm?

Accepted Answer

Proceed to emergency surgical airway

Answer

Attempt a third laryngoscopy with video laryngoscope

Answer

Awaken the patient and attempt awake fiberoptic intubation

Answer

Call for a second anesthesiologist and wait

Question 3

A patient receiving neuraxial anesthesia develops a total spinal block. Which hemodynamic change is most immediately life-threatening?

Accepted Answer

Severe hypotension with bradycardia

Answer

Hypertension with reflex bradycardia

Answer

Tachycardia with mild hypotension

Answer

Hypertension with tachycardia

Question 4

A pediatric patient (20 kg) in the OR develops laryngospasm with complete obstruction after extubation. Which intervention is most appropriate after positive-pressure oxygen fails?

Accepted Answer

Succinylcholine 4 mg/kg IM (80 mg)

Answer

Immediate reintubation with a standard laryngoscope

Answer

Propofol 0.5 mg/kg IV to deepen anesthesia

Answer

Cricothyrotomy with a 14-gauge catheter

Question 5

Intraoperative TEE reveals a new large pericardial effusion with right ventricular diastolic collapse. What is the most appropriate immediate anesthetic management?

Accepted Answer

Avoid high-dose vasopressors; maintain heart rate and preload

Answer

Increase PEEP to improve venous return

Answer

Administer beta-blockers to reduce myocardial oxygen demand

Answer

Induce controlled hypotension to decrease afterload

Question 6

During a liver transplant, the anesthesiologist notices signs of air embolism: mill-wheel murmur, sudden hypotension, and end-tidal CO2 drop. What position change is most helpful?

Accepted Answer

Trendelenburg with left lateral decubitus (Durant's maneuver)

Answer

Reverse Trendelenburg

Answer

Right lateral decubitus

Answer

Prone position

Question 7

A patient under monitored anesthesia care (MAC) develops respiratory depression with SpO2 of 85% following midazolam and fentanyl. The MOST immediate intervention is:

Accepted Answer

Apply jaw thrust and supplemental oxygen

Answer

Administer flumazenil 0.2 mg IV

Answer

Administer naloxone 0.04 mg IV titrated

Answer

Perform endotracheal intubation