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BLS and High-Quality CPR Flashcards

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

Read the first 7 BLS and High-Quality CPR flashcards as text

  1. Which of the following BEST describes the purpose of the 'C-A-B' sequence in CPR?

    Answer: Prioritizing chest compressions over airway and breathing to restore circulation faster

    The C-A-B sequence ensures compressions start immediately to restore circulation rather than delaying for airway management.

  2. An ETCO2 monitor is attached to a patient receiving CPR. The reading is 42 mmHg. What does this most likely indicate?

    Answer: Return of spontaneous circulation

    An abrupt rise in ETCO2 to normal physiologic levels (35–45 mmHg) during CPR is a reliable indicator of ROSC.

  3. What is the recommended depth of chest compressions for an infant during CPR?

    Answer: At least 1.5 inches or approximately 1/3 the depth of the chest

    For infants, compressions should be at least 1.5 inches or approximately one-third the anterior-posterior chest diameter.

  4. During a cardiac arrest resuscitation, when should the team consider stopping CPR efforts?

    Answer: Based on clinical judgment, ETCO2 trends, and reversible causes being addressed

    The decision to stop CPR is based on clinical factors including ETCO2 trends, reversible causes (H's and T's), rhythm, and team assessment — not a fixed time.

  5. A single rescuer is performing CPR on an adult with no advanced airway. After how many compressions should rescue breaths be given?

    Answer: 30 compressions

    Single-rescuer adult CPR follows the 30:2 ratio, with 30 compressions followed by 2 rescue breaths.

  6. During CPR, a rescuer is using a bag-mask device alone. Which technique best maintains an adequate mask seal?

    Answer: Two-hand mask hold with a second rescuer compressing the bag

    Two rescuers — one holding the mask with both hands using the E-C clamp and one squeezing the bag — provides the best seal and ventilation.

  7. Which of the following best explains why excessive ventilation during CPR is harmful?

    Answer: It increases intrathoracic pressure, reducing venous return and cardiac output

    Excessive ventilation raises intrathoracic pressure, which impedes venous return to the heart and reduces the cardiac output generated by compressions.