BLS High-Quality CPR & Provider Skills Flashcards
6 cards from real BLS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 BLS High-Quality CPR & Provider Skills flashcards as text
In CPR quality metrics, what does 'chest compression fraction' (CCF) measure?
Answer: The proportion of total resuscitation time spent actively performing chest compressions
CCF measures how much of the total resuscitation time is spent actually compressing the chest — higher fractions correlate with better outcomes.
What is the AHA target for chest compression fraction (CCF) during CPR?
Answer: At least 80%
The AHA recommends achieving a CCF of at least 80%, meaning compressions should be active for at least 80% of resuscitation time.
Which action BEST reduces interruptions in chest compressions during CPR?
Answer: Keeping all pauses under 10 seconds and preparing tasks without stopping compressions
Limiting all pauses to under 10 seconds and performing preparatory tasks during ongoing compressions maintains a high compression fraction.
In 2-rescuer adult CPR before an advanced airway is placed, what is the correct compression-to-ventilation ratio?
Answer: 30:2 — same as single-rescuer adult CPR
Adult 2-rescuer CPR uses 30:2, the same as single-rescuer, until an advanced airway is placed and asynchronous ventilation begins.
How often should rescuers rotate compression duties to maintain compression quality?
Answer: Every 2 minutes, corresponding to each rhythm check or AED analysis cycle
Research shows compression depth and rate degrade significantly within 2 minutes, so rotating at every 2-minute rhythm check maintains high-quality CPR.
When should chest compressions be paused to allow the AED to analyze the heart rhythm?
Answer: Approximately every 2 minutes, aligned with compressor rotation and AED prompts
Rhythm analysis pauses are scheduled approximately every 2 minutes, synchronized with compressor rotation to minimize total interruption time.