Training simulation only

CPR Basics

Three short drills that build the habits the arrest timer assumes you already have: a steady compression rate, unhurried breaths, and a fast shock/no-shock call. Nothing here needs an account.

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Compressions

Tap out 30 compressions and get graded on rate against 100–120/min.

Breaths

30:2 before the airway is in, then one breath every 6 seconds after it.

Rhythm

Shock or don't shock — and what happens in the seconds after.

Next: the arrest timer

You can open the timer any time — but the drills above are what make its prompts make sense.

⏱ Open the arrest timerGuidelines & resources
What the drills are graded against
  • • Compression rate 100–120/min, depth 5–6 cm (at least 5 cm, no more than 6 cm), full recoil, ratio 30:2 until an advanced airway is in place.
  • • Rhythm reassessed every 2 minutes; keep every interruption under 10 seconds.
  • • Epinephrine (adrenaline) 1 mg IV/IO every 3–5 minutes — as soon as feasible in asystole/PEA, after failed defibrillation in VF/pVT.
  • • Amiodarone 300 mg (then 150 mg) or lidocaine for VF/pVT refractory to shocks.
  • • With an advanced airway: continuous compressions and 1 breath every 6 seconds (10/min).
  • • Search the reversible causes (Hs and Ts) throughout the arrest.

American Heart Association 2020 Guidelines for CPR and ECC — Part 3 (Adult Basic and Advanced Life Support), Circulation 2020;142(16_suppl_2):S366–S468; reaffirmed in the AHA 2023–2025 focused updates. AHA guidelines