To prepare for his quiz on CPR, Woo Jin listed the steps he learned in his online health class. 1. Check for consciousness. 2. Check for a pulse. 3. Call 911. 4. Perform 100–120 chest compressions per minute. 5. Push hard and fast during compressions. 6. Perform CPR until the person starts breathing or help comes. Woo Jin got 5 out of 6 on his quiz. Which step did Woo Jin get wrong and why? step 2, because you do not check for a pulse if you are not trained
step 3, because you call 911 only after five minutes of not breathing
step 5, because chest compressions should be hard and slow
step 6, because CPR is done only until the call to 911 is made