AJ PHOTO / SCIENCE PHOTO LIBRARY AJ PHOTO / SCIENCE PHOTO LIBRARY
Resuscitation. Doctors performing cardiopulmonary resuscitation (CPR) on an unconscious man, following a cardiac arrest. The doctor on the right is giving heart massage (cardiac compression). Each downward compression on the chest squeezes blood out of the heart and around the body. The other doctor is using an Ambu bag to push air into the patient's lungs, maintaining oxygenation of the blood and stimulating natural breathing.
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