Under normal circumstances, the heart rate generally ranges from 60 to 80 beats per minute. If it is less than 60 beats per minute, it is considered bradycardia. If there are no other symptoms of discomfort, no treatment is generally required. However, if symptoms such as dizziness and fatigue occur simultaneously, suitable medications can be used for adjustment under the guidance of a doctor. Commonly used Chinese herbal medicines include Astragalus, Ginseng, and American Ginseng. Additionally, traditional Chinese medicine preparations such as Xinbao Pill, Shensong Yangxin Pill, and Ershen Fumai Capsule can also be used for adjustment.

1. What Chinese Herbal Medicines Can Be Used to Treat Slow Heart Rate?

a. Chinese Herbal Medicines: When the heart rate is slow, Astragalus, Ginseng, and American Ginseng can be used daily for brewing tea or boiling water. These herbs can help increase the heart rate.

b. Traditional Chinese Medicine Preparations: If the heart rate is below 50 beats per minute and accompanied by symptoms such as fatigue, dizziness, and blurred vision, active treatment is necessary. Methods such as replenishing qi, warming yang, and promoting the flow of pulses can be used. Commonly available traditional Chinese medicine preparations such as Xinbao Pill, Shensong Yangxin Pill, and Ershen Fumai Capsule can be selected for use.

2. Causes of Slow Heart Rate

a. Conduction Block: Generally speaking, severe atrioventricular conduction block refers to the failure of impulse waves emanating from the sinoatrial node (the pacemaker) to transmit to the atrioventricular node, resulting in spontaneous ventricular contractions. This indirectly affects the heartbeat and slows it down. When complete atrioventricular conduction block occurs, it can lead to a rapid decrease in the number of heartbeats per minute, further causing a decrease in cardiac output.

b. Changes in Vagal Tone: Slow heartbeat caused by increased vagal tone is relatively common. When the vagus nerve is excited, it releases a substance called "acetylcholine" at the periphery of the body. This substance inhibits the heart, resulting in a slow but strong and regular heartbeat. Typically, the heart rate does not fall below 50 beats per minute. During this time, the cardiac output remains sufficient to maintain normal physiological functions, so there is no need for concern.

c. Changes in the Function of the Sinoatrial Node: Heartbeat caused by pathology of the sinoatrial node is known as sick sinus syndrome, with a heart rate of approximately 40 beats per minute. This condition is accompanied by decreased cardiac output, leading to symptoms such as fatigue and tinnitus. In more severe cases, it can even lead to coma.