Assisting with Administration of Anesthesia and Sedation Flashcards
7 cards from real RDA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Assisting with Administration of Anesthesia and Sedation flashcards as text
During nitrous oxide sedation, a patient suddenly becomes excited and uncooperative. What is the most likely cause?
Answer: The nitrous oxide concentration is too high
Excessive nitrous oxide concentration can cause paradoxical excitement, dysphoria, or uncooperative behavior in some patients.
Which intraoral injection technique deposits anesthetic near the mental foramen to anesthetize mandibular premolars?
Answer: Mental nerve block
The mental nerve block targets the mental foramen, providing anesthesia to the mandibular premolars, anterior teeth, and adjacent soft tissue.
A patient's oxygen saturation (SpO2) drops to 91% during moderate sedation. What is the first action the dental team should take?
Answer: Increase the oxygen flow rate
A drop in SpO2 should first be addressed by increasing supplemental oxygen delivery before escalating to more advanced interventions.
Which of the following best describes the term 'vasoconstrictor' as used in local anesthetic solutions?
Answer: An agent that prolongs anesthetic duration and reduces systemic absorption
Vasoconstrictors such as epinephrine constrict blood vessels at the injection site, prolonging anesthetic effect and slowing systemic absorption.
When assisting with IV sedation, the RDA notices the patient's IV site is swollen and the skin feels cool and tight. This most likely indicates:
Answer: Extravasation (infiltration)
Swelling, coolness, and tightness at an IV site are classic signs of extravasation, meaning the IV fluid has leaked into surrounding tissue.
For a patient with documented allergy to ester-type local anesthetics, which alternative should the dentist consider?
Answer: Lidocaine
Lidocaine is an amide-type local anesthetic and is generally safe for patients allergic to ester-type agents like procaine, benzocaine, or tetracaine.
Which of the following is a key criterion for patient discharge after nitrous oxide sedation?
Answer: The patient must receive 100% oxygen for a minimum of 5 minutes post-procedure
Patients must breathe 100% oxygen for at least 5 minutes after nitrous oxide is discontinued to prevent diffusion hypoxia.