What reason is heartbeat slow

summary

Recently, the old man's heart rate in my family is relatively slow. Therefore, I specially searched the relevant information and learned the reasons for this situation. Next, I'll tell you about it.

What reason is heartbeat slow

One: slow heartbeat occurs in the body, which is caused by conduction block: the heart beat is directed by the sinoatrial node, and conduction block is due to the pathological changes of the atrial node or the myocardium, so that the commands issued by the sinoatrial node cannot be transmitted.

Second: slow heartbeat occurs in the body, which is caused by the change of vagus nerve tension: bradycardia caused by increased vagus nerve tension is common in normal people. When vagus nerve is excited, its endings can release a substance called "acetylcholine", which can inhibit the heart, so it can slow down the heartbeat. Although the heart beat is slow, it is powerful and regular, and not less than 50 times per minute, the cardiac output does not decrease, and it can maintain normal physiological function.

Third: slow heartbeat occurs in the body, which is caused by the change of sinus node function: bradycardia caused by the pathological changes of sinus node itself is clinically called sick sinus syndrome. The heartbeat is about 40 times per minute, and the cardiac output is significantly reduced. The patient will have a series of symptoms, such as dizziness, dizziness, tinnitus, and coma and convulsions.

matters needing attention

If the heart rate of the elderly at home is slow, we should strengthen the care of the elderly in our life, help the elderly to do some exercises such as walking slowly, and pay attention to the cold and warmth.