What causes a slow heart rate? What is the cause of a slow heart rate?

Analysis:,Suggestions:,Judging from your medical history, the problem is not big, but it should be noted,1:

Review the Holter electrocardiogram regularly, and when checking the ECG, exercise to see if the heart rate can be a little higher, 2: if there is a long gap, 3: if there is syncope.

In addition, your blood lipids are relatively high. Zhou Daxin, Department of Cardiology, Shanghai Zhongshan Hospital.

Generally speaking, slow heart rate will also have an impact on people's daily behavior, in addition, slow heart rate will also bring chaos to people to extreme discomfort, therefore, the following analysis of the causes of slow heart rate needs to attract everyone's attention.

1.First of all: vagus nerve hyperfunctionWhen the vagus nerve is excited, its terminals can release a substance called "acetylcholine", which has an inhibitory effect on the heart, so it can slow down the heartbeat.

Bradycardia caused by vagus nerve hyperactivity is usually a regular rhythm of 30 to 40 beats per minute. This situation is more common among the elderly.

2.Secondly: Sick sinus syndrome due to the pacemaker of the heartbeat - sinus node, can not send impulses well or delay the impulse, will slow down the heartbeat, the most common ** is cardiomyopathy, coronary heart disease and degenerative diseases of the heart conduction system in the elderly.

People with sick sinus syndrome sometimes have only about 30 heartbeats per minute.

3.Finally: severe atrioventricular block, that is, the impulse wave emitted by the pacemaker sinus node can not be transmitted to the atrioventricular node and is blocked, at this time the ventricle has to compensate for its own impulses, so the heartbeat is quite slow, once complete atrioventricular block occurs, the heartbeat is only about 20 times per minute, this situation will lead to a decrease in cardiac blood output and lead to insufficient blood supply to the brain, which is very easy to cause dizziness and even fainting.

Precautions. The cause of the slow heart rate needs to be actively searched by the patient, and at the same time, in terms of diet, we must pay attention to avoid overeating, and at the same time, you can drink more light salt water at ordinary times.

Slow heart rate is also a kind of arrhythmia, Linchuan diagnosis depends on how many times the patient's heart rate is slow, the normal range of heart rate is between 60-140, below 60 can be called bradycardia, bradycardia below 50 is risky. Therefore, slow heart rate first needs to judge whether it is dangerous, there are many reasons for slow heart rate, the most common cause is conduction block, including conduction block above the second degree of simple air dust, and due to drug reasons, such as inappropriate or long-term use of receptor blockers. There are many reasons for a slow heart rate, the main ones are the following:

1. The heart rate of people who are usually very athletic or professional athletes may be very slow, and there are only 50 minutes or even more than 40 minutes when resting; 2. Some diseases may cause the heart to slow down, including myocarditis, cardiomyopathy, or other drug reactions. The medical definition of a slow heart rate is a heart rate of less than 60 beats. If the patient's heart rate is slow, it is recommended to go to the hospital for an electrocardiogram to see if there are any special problems, and sometimes even blood tests are needed to rule out special diseases.

If you haven't taken any special medications in the past, including digoxin, your doctor may also do some detailed tests, such as a 24-hour electrocardiogram, to see if there are any particularly slow times. Therefore, the heart rate is slow, and some corresponding examinations should be carried out according to the patient's condition and past medication history.