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During CPR (cardiopulmonary resuscitation), you exhale into the unconscious person’s mouth. The air the unconscious person...

During CPR (cardiopulmonary resuscitation), you exhale into the unconscious person’s mouth. The air the unconscious person receives is about 16% O2 and 4.5% CO2. How will this mixture of gas help the unconscious person to breathe?

Science   Anatomy-And-Physiology   
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CONCEPT:-cardio pulmonary resuscitation act as aartificial heart and artificial lung.

During CPR when we give 16% oxygen and 4.5% Carbon dioxide mixture why mouth breathing breathing then and we are forcing the Oxygen and Carbon dioxide to go into the lungs which expands the long of the victim and acts as a positive pressure ventilation now this oxygen dissolved in blood and when he pushes our arm on the chest of the patient it compresses the heart and give it a pumping motion acting like a Artificial heart which comes the blood Tu brain and other vital organs which are prone to ischemic damage.

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