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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. During CPR on an adult, chest recoil between compressions is important primarily because it:

    Answer: Allows the heart to refill with blood

    Full chest recoil allows venous blood to return to the heart (venous return), creating preload for the next compression.

  2. A 70 kg adult is in cardiac arrest. Bag-mask ventilation is being performed. What tidal volume is recommended per breath?

    Answer: 500–600 mL

    A tidal volume of 500–600 mL (enough to see chest rise) is recommended to avoid gastric insufflation and lung injury.

  3. Which of the following is the correct hand placement for adult chest compressions?

    Answer: Center of the chest on the lower half of the sternum

    Hands are placed on the lower half of the sternum (center of the chest), which optimally compresses the heart between the sternum and spine.

  4. An advanced airway (endotracheal tube) is in place during CPR. How should ventilations be delivered?

    Answer: 1 breath every 6 seconds, asynchronously with compressions

    Once an advanced airway is secured, ventilations are given asynchronously at a rate of 1 breath every 6 seconds (10 breaths/min) without interrupting compressions.

  5. What is a key indicator that CPR is resulting in ROSC (return of spontaneous circulation)?

    Answer: ETCO2 abruptly rises to 35–40 mmHg

    A sudden rise in ETCO2 to near-normal levels (35–40 mmHg) indicates restored cardiac output and strongly suggests ROSC.

  6. Why should rescuers switch the compressor role approximately every 2 minutes during CPR?

    Answer: Because fatigue causes compression depth to decrease within 2 minutes

    Compressor fatigue causes subtle degradation of compression depth within 1–2 minutes, so switching during rhythm checks maintains quality.

  7. During a resuscitation attempt, the team leader notices the compressor is 'bouncing' on the patient's chest. What is the correct response?

    Answer: Instruct the compressor to allow full chest recoil without leaning

    Leaning on the chest between compressions prevents full recoil, reducing cardiac filling; the compressor should be corrected immediately.