What is the external cardiac squeeze ratio for 1 rescuer within cpr?

What is the external cardiac squeeze ratio for 1 rescuer within cpr?
The guidlines have changed immediately. If you are not familiar next to the new guidlines here they are.
The revised guidelines issued Monday by the American Heart Association on cardiopulmonary resuscitation support giving 30 chest compressions — instead of 15 — for every two rescue breaths.
30TO 2
The new ratio is 30:2 for adults, children, and infants.

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