Final answer:
In 2 minutes, one should perform approximately 5 cycles of CPR on an adult, each cycle consisting of 30 compressions followed by 2 rescue breaths, based on the rate of 100 compressions per minute with high-quality chest compressions.
Step-by-step explanation:
The number of cycles of CPR to be performed on an adult in 2 minutes should be based on the rate of 100 compressions per minute. Since CPR guidelines recommended a cycle of 30 compressions, this equates to about 5 cycles of CPR in 2 minutes, assuming that each set of compressions is followed by 2 rescue breaths and that each cycle lasts approximately 24 seconds. It's critical to maintain high-quality chest compressions for the effectiveness of CPR, and the compression depth should be at least 5 cm.