A Heart Attack (technical term: myocardial infarction) is a life threatening event, caused by a sudden complete occlusion of a heart wreath receptacle. Fast action is crucial in acute myocardial infarction: Because closes one of the 3 major coronary vessels (coronary arteries), is a part of the heart muscle is no longer with oxygen and nutrients. Failure to the vessel within a few hours to reopen, died in the muscle tissue by the blood supply is cut off from. The affected tissue is called myocardial infarction. The bigger the sealed container, the bigger the infarction. The risk for sudden cardiac acute myocardial infarction is due to a possible serious cardiac arrhythmia (ventricular fibrillation) is particularly high. Nor can a large infarct at the pumping of the heart so strongly affected that the circuit more or less collapses, then one speaks of a cardiogenic shock. Therefore, when a suspected heart attack no time to lose and to immediately call the ambulance! Annually about 300,000 people a heart attack in Europe – almost every second person dies before he reached the hospital. The heart is thus here at the causes of death are at the forefront, while the mortality is higher among women than among men. Although women are young and middle age by estrogen (female sex hormones) before a heart attack is relatively well protected, but after menopause increases the rate of infarct them. Moreover, since women often shows uncharacteristic stroke symptoms such as abdominal pain, nausea and vomiting occur, the complaints are often late correctly interpreted, the mortality risk is increased accordingly. Many attacks occur in the morning hours. One possible explanation is that with the dawn of the different levels of effective circulatory hormones in the blood rises, which also blood pressure and heart rate are higher.