There are 30 chest compressions between ventilation's for 1-rescuer CPR.
For every 30 compressions, you give 2 rescue breaths.
30:2
30:2
15:2
During CPR the lungs and heart are stimulated.
the same as for 1 person CPR 30:2 (Compression:Breaths)
For 1-person CPR the compression-ventilation ratio for children (and adults and infants) are 30 compressions to 2 breaths.
During CPR the heart and lungs are stimulated.
Baking soda should not be used in CPR.
In an unconscious victim you perform CPR the same for an obstructed airway as you would for regular CPR with one exception, before attempting ventilation you should look for the object in the mouth and if you see it, remove it. But never perform a blind finger sweep!
30 compression to 2 breaths