Answer: Each time you open airway,look for the obstructing Object and remove it.
Explanation:CPR(CARDIOPULMONARY RESUSCITATION is an emergency process of compressing a person's chest and manually breathing Oxygen into the person in order to resuscitate the person's normal Cardiorespiratory functions.
This is applied in emergency situations as a first aid step.
The modification to introduced to the CPR sequence is to manually open the person's airways and check out for possible obstructions and effectively remove the obstructing Object.