Which device is recommended to help maintain correct CPR rate during adult BLS CPR?

• A. Stethoscope
• B. Blood pressure cuff
• C. Metronome or real-time audiovisual feedback device
• D. Thermometer

Answer: (C)

Maintaining the correct CPR rate relies on a pacing aid. A metronome or a real-time audiovisual feedback device provides a consistent tempo to guide chest compressions, helping rescuers stay within the recommended rate of about 100–120 compressions per minute. The metronome gives an audible beat to keep you on tempo, while real-time feedback devices also show rate and often depth, so you can adjust on the fly to stay within optimal guidelines. Other tools listed aren’t used to pace compressions: a stethoscope is for listening to sounds and doesn’t help pace CPR; a blood pressure cuff interrupts chest compressions to measure BP; a thermometer has no role in guiding CPR rate.