The normal heart rate is 60-100 beats/minute, and the heart rate is lower than 60 beats/minute, which means that the heart rate is bradycardia. The harm of bradycardia is mainly reflected in that it can affect the work of the heart. For example, every time the heart beats, the heart contracts. The emitted blood multiplied by the number of heartbeats, which is the blood that can be perfused by the heart in one minute. Normal people should be 4-5L. If the heart rate is too slow and the output of blood from the heart is too little to a certain extent, the blood supply of the whole body is insufficient. The most common clinical manifestation is cerebral blood supply insufficiency. The patients may show dizziness, fatigue, lethargy, and insufficient blood supply to the lower limbs, leading to difficulties in walking and other symptoms. If the heart rate is too slow for a long time, it will lead to insufficient blood supply throughout the body, which can lead to ischemia symptoms of various organs. Therefore, if the heart rate is lower than 60 times/minute in clinical practice, timely medical treatment is required.
