Procedure Of CPR First Aid The Main Formula 'Compressions_Open Air_Two Breaths' Called "C-A-B" 1.30 com pressions in 20 sec,[Lock the elbo, take onehand on one hand in tight] 2.make the person is layout with back touch the soil like, and gently till their head Back & chake Normal Breathing, 3.keep air way open & give mouth to mouth air with y