Practice Test GeeksDAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test
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Anesthesia Equipment and Delivery Flashcards

7 cards from real DAANCE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Anesthesia Equipment and Delivery flashcards as text

  1. What is the primary purpose of a scavenging system in a dental anesthesia setup?

    Answer: To collect and remove waste anesthetic gases from the operatory

    Scavenging systems capture waste anesthetic gases (especially nitrous oxide) to prevent occupational exposure to dental personnel.

  2. Which component of the nitrous oxide delivery system is responsible for reducing high tank pressure to a safe working pressure?

    Answer: Pressure regulator

    The pressure regulator reduces the high cylinder pressure to a lower, safe working pressure suitable for delivery to the patient.

  3. A dental anesthesia machine failsafe mechanism is designed to:

    Answer: Shut off nitrous oxide flow if oxygen pressure drops below a threshold

    The failsafe mechanism automatically shuts off or limits nitrous oxide delivery if oxygen supply pressure falls below a set minimum, preventing hypoxic mixtures.

  4. When inspecting nitrous oxide cylinders before use, a DAANCE-certified assistant should verify the cylinder color code. In the United States, nitrous oxide cylinders are:

    Answer: Blue

    In the US, nitrous oxide cylinders are color-coded blue, while oxygen cylinders are green.

  5. The reservoir bag on a nitrous oxide/oxygen delivery system serves which function during inhalation sedation?

    Answer: Stores excess gas and allows monitoring of respiratory rate and depth

    The reservoir bag acts as a gas reservoir and allows the clinician to visually monitor the patient's breathing rate and tidal volume.

  6. Which type of nasal hood (mask) is most appropriate for a pediatric patient receiving nitrous oxide sedation?

    Answer: A pediatric-sized mask designed for smaller facial anatomy

    A properly sized pediatric nasal mask ensures an adequate seal and accurate gas delivery, minimizing leakage and environmental contamination.

  7. During nitrous oxide administration, the flowmeter indicates a total flow of 6 L/min with 30% nitrous oxide. How many liters per minute of oxygen is the patient receiving?

    Answer: 4.2 L/min

    If 30% of 6 L/min is nitrous oxide (1.8 L/min), then oxygen accounts for 70%, which equals 4.2 L/min.

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