Infection Control · single question
A 13-year-old patient becomes pale/white and lightheaded after receiving 1 carpule of local anesthetic. What is the MOST appropriate immediate response?
Show answer and explanation
Correct answer: A. Sit the patient UPRIGHT (Trendelenburg — lay flat and elevate legs) or supine to restore cerebral perfusion
- A. Correct. The presentation (pale, lightheaded after LA injection) is consistent with VASOVAGAL SYNCOPE (the most common dental emergency). Management: (1) Stop treatment, (2) Place patient in SUPINE position (lay flat) with legs slightly elevated to maximize cerebral blood flow, (3) Monitor vital signs, (4) Ammonia inhalant if needed. The patient typically recovers quickly.
- B. Calling 911 is premature for suspected vasovagal syncope — try supine positioning first. Escalate if no improvement.
- C. Continuing treatment during active syncope signs is inappropriate.
- D. Reversal agents are for drug overdose — vasovagal syncope is not a drug reaction.
Practice Infection Control questions Infection Control study notes