In the 30-2-can do approach, what does the '2' stand for?

• A. The number of respirations to perform at the start
• B. The number of seconds to check for ventilation
• C. The number of patients to assess at once
• D. The number of seconds needed to check for perfusion

Answer: (D)

The main idea here is how timing is encoded in this CPR mnemonic. In this version, after delivering the 30 chest compressions, you pause for a very brief, fixed window to check perfusion. The number two specifically represents that short 2-second interval you use to assess for signs of perfusion (such as a pulse) so you can decide quickly whether to continue compressions or move on. The emphasis is on staying as continuous as possible with compressions, using only a brief pause to verify perfusion.

So the two isn’t about how many breaths or how many patients; it’s about the speed of the perfusion check within the CPR cycle.