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ECPR and Special Populations Flashcards

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

Read the first 7 ECPR and Special Populations flashcards as text

  1. What is the maximum recommended 'no-flow' time before ECPR initiation to expect meaningful neurological recovery?

    Answer: 5 minutes

    Witnessed cardiac arrest with no-flow time under 5 minutes is associated with better neurological outcomes after ECPR.

  2. In pediatric ECPR, which circuit component is most commonly downsized compared to adult configurations?

    Answer: The oxygenator membrane surface area

    Pediatric ECPR uses smaller oxygenator membrane surface areas to match the lower blood flow requirements and reduce prime volume.

  3. During ECPR for in-hospital cardiac arrest, chest compressions should be continued until ECMO flow reaches which threshold?

    Answer: Full target flow

    CPR should continue until ECMO reaches full target flow to ensure uninterrupted perfusion during cannulation and ramp-up.

  4. Which underlying rhythm is associated with the BEST outcomes in ECPR?

    Answer: Ventricular fibrillation

    Ventricular fibrillation as the initial arrest rhythm is associated with the best ECPR survival because myocardial viability is often preserved.

  5. A neonate on ECPR has an arterial PaO2 of 400 mmHg. What is the most appropriate adjustment?

    Answer: Reduce FiO2 in the sweep gas blender

    Hyperoxia in neonates is harmful; reducing sweep gas FiO2 via the blender lowers delivered oxygen concentration to the circuit.

  6. In ECPR for hypothermic cardiac arrest, rewarming should occur at a rate no faster than:

    Answer: 1–2°C per hour

    Rewarming at 1–2°C per hour via the ECMO heat exchanger minimizes afterdrop and cardiovascular instability.

  7. Which cannulation strategy is preferred when ECPR is performed during active CPR in a pediatric patient under 10 kg?

    Answer: Neck (carotid-jugular) cannulation

    Carotid artery and internal jugular vein cannulation is the preferred approach in small pediatric patients due to vessel size limitations at the femoral site.