Final answer:
The ratio of compressions to ventilations in an adult 1 person scenario is 30:2, according to the AHA guidelines for CPR.
Step-by-step explanation:
As to the guidelines for cardiopulmonary resuscitation (CPR) published by the American Heart Association (AHA), in an adult single-person scenario, the ratio of compressions to ventilations is 30:2. This implies that you should provide two ventilations for every thirty compressions. While ventilations include breathing in to help with oxygenation, compressions involve applying pressure to the chest to aid in blood circulation. The objective is to keep oxygenation and circulation going until sophisticated medical assistance shows up. Always remember to adhere to the precise rules and directives given by medical groups like the American Heart Association or the Red Cross chapter in your area.