Panic is a common manifestation of physical discomfort that we often encounter. It can manifest as "the heart pounding rapidly", "the heart empty", "feeling flustered in the heart cavity", or "feeling restless and restless all over", and so on. Especially when winter comes, the high incidence of cardiovascular and cerebrovascular diseases will make people "extremely panic and anxious". Don't worry, the doctor told you that if you are feeling anxious, don't worry. Sudden death is often caused by heart attacks and palpitations. Is it a very serious heart disease? Will sudden death occur like some celebrities? Many anxious patients may have such concerns. In fact, the majority of causes of sudden cardiac death are often acute myocardial infarction, commonly known as acute myocardial infarction. Acute myocardial infarction is usually caused by acute occlusion of the coronary artery that supplies blood to the heart. And palpitations are electrical changes responsible for stimulating and maintaining heart beat. The two are completely different. Is the so-called electrical induced palpitations very serious? Compared to acute myocardial infarction, the disease that causes palpitations is much milder. To understand the harm of palpitations, one must know what changes occur in the heart during palpitations. The feeling of palpitations comes from changes in the heart rate and rhythm. For example, a particularly fast or slow heartbeat, irregular jumping, and so on can all lead to palpitations. Among the three situations, there is no need to worry about a fast and irregular heartbeat. This sudden heartbeat is not a big deal. Firstly, some rapid heartbeats are physiological and there is no need to worry. For example, students may feel mentally tense during exams, exert a lot of effort while climbing mountains, or become very angry when angry, all of which can lead to an outcome of sympathetic nervous system excitement. The various activities of the human body are finely regulated by the sympathetic and parasympathetic nervous systems, achieving a balance. Excitement of the sympathetic nervous system can cause symptoms such as rapid heartbeat, rapid breathing, and high blood pressure; On the other hand, parasympathetic nerve stimulation is the opposite, causing slow heartbeat, slow breathing, and decreased blood pressure, such as in sleep. Sometimes, having a nightmare at night and waking up with a very fast heartbeat is because the body is in an extremely excited state of sympathetic nervous system during the dream. The rapid heartbeat in these situations is an adaptive adjustment made by the human body to adapt to the needs of the environment and body function. When there is no longer tension, labor, or anger, the heartbeat will improve on its own. If forced medication suppresses the heartbeat, it may not be good. There is no need to worry about any sympathetic nervous system excitement caused by physiological reasons, which can lead to accelerated heartbeat or premature like rapid arrhythmia. In this situation, it is advisable to take some medication as appropriate. In addition to emotional factors such as anger, labor, and tension, excitatory drinks such as alcohol, tea, and coffee can also cause sympathetic nervous system excitement, leading to palpitations. These situations are also caused by physiological factors, such as the influence of food. Generally, there is no need to worry and medication is not necessary. Some patients never drink alcohol, and the occasional palpitations caused by drinking may last for a long time and remain uncomfortable. In this situation, some drugs that inhibit sympathetic neurotransmitters can be used appropriately, such as beta1 receptor blockers such as metoprolol. Some palpitations are not rooted in the heart, while others are pathological, but the disease itself is not in the heart, but rather a problem with other systems throughout the body. for example