Case Recognizing cardiac arrest can be challenging

The key observations are unresponsiveness and not breathing normally.

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How to perform correct CPR: Kneel down beside the patient and check to make sure the surroundings are safe and gently shake the shoulders to check for responsiveness.
Make sure to call the emergency services or have someone do so, and get an AED. It is crucial to remain focused and calm while performing CPR, and not be distracted by bystanders or your surroundings.

Place the heel of your hand in the center of the chest and place your other hand on top and interlock the fingers. Position yourself vertically above the patient’s chest, keep your arms straight, and press down on the patient’s chest 5 cm deep.
After each compression, release all the pressure on the chest without losing contact between your hands and the patient’s chest. Repeat this at a rate of 100-120 compressions per minute.

After 30 chest compressions, open the airways by tilting the head and blow steadily into the mouth for 1 second, look for the chest to rise. Take your mouth away and watch for the chest to fall as air comes out. Give one more breath in the same manner, and continue with 30 compressions and 2 rescue breaths until AED arrives.