Arrhythmias are common and frequent diseases of the cardiovascular system. They are disruptions in the normal rhythm of a person’s heartbeat, becoming too fast, too slow or irregular, and can occur at any age, with the incidence increasing with age. Arrhythmias are a category of cardiovascular disease. Mild arrhythmias can be asymptomatic or mild and do not cause harm to the body, but a few severe arrhythmias are the most important cause of sudden cardiac death due to their sudden onset and low success rate of treatment. According to statistics, more than 90% of sudden deaths in China each year are related to arrhythmias. Therefore, it is especially important to know about the prevention and treatment of arrhythmias. 24-hour ambulatory electrocardiogram can confirm the diagnosis Many people think that arrhythmia is a disease only for the elderly, but in fact, it is not, such as sinus arrhythmia, which occurs in all age groups, but is mostly seen in children and young people. Sinus arrhythmias are arrhythmias caused by sinus node impulses that form too fast, too slow, irregular rhythm, or sinus node impulse conduction disorders. Sinus tachycardia is usually physiological and does not require treatment, but it does require treatment when accompanied by certain diseases, such as hyperthyroidism and myocarditis. Many parents conclude that their child is “bradycardic” or “tachycardic” based on a single auscultation or electrocardiogram, which is often unscientific and inaccurate. At the same age, it is difficult to simply judge whether the heart rate is normal or abnormal. Usually, it is necessary to combine the normal ECG pattern and, especially importantly, the 24-hour ambulatory ECG to understand the range of heart rate fluctuations throughout the day to make a comprehensive evaluation. Radiofrequency ablation is more effective in treating arrhythmias Common treatments for arrhythmias are divided into drug therapy and radiofrequency ablation therapy. Drug therapy is the basic treatment, mainly to control and relieve the condition, but not really effective in relieving the disease. If medication is not effective, in this case it is worth considering cardiac radiofrequency ablation, which is a one-time and complete treatment. Compared with surgical procedures, it does not require opening the chest, does not require general anesthesia, and is easy to operate. Since the local damage caused by radiofrequency current to the myocardium is very limited, about 3-4 mm in diameter and depth, it will not affect the surrounding normal myocardial tissue. The procedure is mostly completed in about one hour and the patient is usually discharged in two to three days. Although radiofrequency ablation is the most effective way to eradicate paroxysmal tachycardia, it is recommended that children under 3 years of age with tachyarrhythmias should be treated with medication first. Because children have characteristics such as fine blood vessels and small hearts, the implementation of radiofrequency ablation is difficult and risky and needs to be chosen carefully. In contrast, radiofrequency ablation can be considered for children over 3 years of age. For arrhythmias such as premature beats, drugs cannot shorten the course of the disease, but only relieve the symptoms, and drug therapy should be highly alert to its toxic side effects; only when the tachycardia affects the quality of life and physical development of the child is actively treated with anti-arrhythmic drugs, and radiofrequency ablation therapy is used in suitable cases. The daily protection of arrhythmia is more important In addition to timely scientific treatment of arrhythmia, it is also important to do a good job of daily protection. First of all, patients should develop the habit of regular rest and sleep, because insomnia can trigger arrhythmias; secondly, they should exercise moderately, avoid getting cold and prevent colds; finally, they should regularly review ECG, electrolytes, liver function and nail function, because anti-arrhythmic drugs can affect electrolytes and organ function. The medication should follow the doctor’s prescription, regular follow-up, observe the effect of medication and adjust the dose.