DAANCE Office Anesthesia Emergencies 4

Question 1

A patient undergoing IV sedation suddenly develops a widespread urticarial rash, bronchospasm, and a drop in blood pressure to 70/40 mmHg. What is the FIRST drug to administer?

Accepted Answer

Epinephrine 1:1000 0.3 mg IM

Answer

Epinephrine 1:1000 (0.3 mg IM into the anterolateral thigh) is the first-line treatment for anaphylaxis due to its rapid alpha and beta adrenergic effects.

Question 2

During IV sedation, the capnograph waveform suddenly disappears and SpO2 begins to fall. What is the most likely cause?

Accepted Answer

Complete airway obstruction or apnea

Answer

A flat (absent) capnograph waveform with falling SpO2 indicates apnea or complete airway obstruction, requiring immediate airway intervention.

Question 3

A patient receiving propofol develops muscle rigidity, hyperthermia (40.5°C), and a rising EtCO2. Which condition should be suspected?

Accepted Answer

Malignant hyperthermia

Answer

Rising EtCO2, hyperthermia, and muscle rigidity following an anesthetic trigger agent are hallmarks of malignant hyperthermia, a life-threatening pharmacogenetic disorder.

Question 4

When performing a jaw-thrust maneuver to relieve airway obstruction, the dental anesthesia assistant should place fingers:

Accepted Answer

On the angles of the mandible and displace it anteriorly

Answer

The jaw-thrust places fingers behind the angles of the mandible and displaces it anteriorly, lifting the tongue off the posterior pharyngeal wall without neck extension.

Question 5

A patient develops acute respiratory depression after receiving fentanyl during office-based sedation. What is the recommended initial dose of naloxone in an adult?

Accepted Answer

0.4–2 mg IV titrated in 0.1 mg increments

Answer

Naloxone 0.4–2 mg IV is given in small increments (0.1 mg) to reverse opioid-induced respiratory depression while minimizing acute opioid reversal side effects.

DAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test

DAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test

DAANCE Office Anesthesia Emergencies 4