Practice Test Geeks(OFA) Occupational First Aid Certification Practice Test
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Respiratory Emergencies & Airway Management Flashcards

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

Read the first 7 Respiratory Emergencies & Airway Management flashcards as text

  1. At what blood oxygen saturation (SpO₂) level should a first aider generally consider initiating supplemental oxygen therapy?

    Answer: Below 95%

    Supplemental oxygen is typically indicated when SpO₂ falls below 95%, as values in this range suggest inadequate oxygenation requiring intervention.

  2. What oxygen flow rate is required to maintain an adequate reservoir in a non-rebreather mask?

    Answer: 10–15 L/min

    A non-rebreather mask requires 10–15 L/min to keep the reservoir bag adequately inflated, delivering approximately 90% oxygen concentration.

  3. A nasopharyngeal airway (NPA) is preferred over an oropharyngeal airway (OPA) when the patient:

    Answer: Has an intact gag reflex or is semi-conscious

    An NPA can be tolerated by patients with an active gag reflex because it is softer and passes through the nose rather than triggering the palatal reflex.

  4. When using a bag-valve-mask (BVM) for rescue breathing, what indicates an appropriate tidal volume has been delivered?

    Answer: Visible, gentle chest rise

    Delivering just enough volume to produce visible chest rise avoids over-inflation, which can force air into the stomach and cause regurgitation.

  5. What is 'agonal breathing' and why is it clinically significant in occupational first aid?

    Answer: Irregular, gasping breaths that can occur after cardiac arrest and should NOT be mistaken for normal breathing

    Agonal breathing is a brainstem reflex producing slow, gasping, irregular respirations following cardiac arrest; it does not represent effective ventilation and CPR should begin.

  6. Which condition is a contraindication to inserting an oropharyngeal airway (OPA)?

    Answer: The patient is conscious or semi-conscious with a gag reflex

    An OPA must never be used in a conscious or semi-conscious patient who has a gag reflex, as it will trigger vomiting and risk aspiration.

  7. When applying a pocket face mask for rescue breathing, which hand position correctly seals the mask while maintaining airway alignment?

    Answer: Both thumbs holding the mask on the bridge of the nose and cheeks, fingers lifting the jaw in an E-C grip

    The E-C technique uses the fingers (shaped like a 'C') to hold the mask and the remaining fingers (shaped like an 'E') to perform a jaw lift, ensuring both a seal and an open airway.