This is a life-threatening condition in which there is a violation of the electrical system of the heart, which it contracts too quickly and then stops. In this case, the person requires urgent resuscitation measures because there are minutes and even seconds.
Discomfort in the chest area. The first sign of future heart failure, in which you feel strong pain in the chest. They occurs the moment when there is a violation of the functions of the heart. Note that chest pain can occur for weeks before the heart stops, but in most cases, been watching them for a few minutes or a few hours.
Loss of consciousness. In the case of cardiac arrest, the person quickly loses consciousness, because the brain is deprived of blood. This is one of the most apparent and obvious signs.
Shortness of breath. The lungs also respond quickly to disruption of blood flow caused by interruption of the heart. They are deprived of necessary oxygen, and while the person is conscious, he is faced with a powerful breath.
The absence of a pulse. If a person is faced with the heart to find a pulse on the wrist or around the neck almost impossible. It was at this point requires the use of a defibrillator, since the shock can start the heart again.
A sudden drop. The data drop is usually explained by a sharp decrease in blood pressure and subsequent dizziness or loss of consciousness.