Introduction to Tachycardia and Cardiac Radiofrequency Ablation Panic, tightness of breath, dizziness, chest tightness, chest pain, may be symptoms of having a tachyarrhythmia! Radiofrequency ablation is the first-line treatment option to cure tachycardia! The dangers of tachycardia: The normal human heart rate is between 60 and 100 beats per minute, if it exceeds 100 beats per minute it is called tachycardia. Exercise, alcohol consumption, emotional excitement, etc. can cause tachycardia, but it is a physiological reaction, usually not more than 150 beats per minute, rest or remove the trigger heart rate will gradually return to normal. Another kind of pathological reaction is that the heart rate can be 180-200 beats/min or even faster due to congenital or acquired factors. Patients with tachycardia can have episodes of tachycardia for a few minutes to several hours or days, but when they do not have episodes, they can be asymptomatic as normal people. Once tachycardia occurs, patients may experience panic, shortness of breath, drop in blood pressure, and even fainting. Prolonged tachycardia can also lead to tachycardia cardiomyopathy, cardiac insufficiency, malignant arrhythmia, and even sudden death. Even benign tachycardia can be very dangerous for certain occupations such as drivers and people working at height once tachycardia occurs. What is cardiac radiofrequency ablation? Cardiac radiofrequency ablation is an interventional procedure for the treatment of tachyarrhythmias. Radiofrequency ablation is the treatment of tachyarrhythmias by introducing radiofrequency current (a high-frequency electromagnetic wave) through a catheter into the heart to ablate localized myocardial cells in a specific area to block or eliminate the lesion. The doctor delivers an electrode catheter through a vein or arterial vessel into a specific area of the heart chambers and releases radiofrequency current to cause localized endocardial and subendocardial myocardial coagulative necrosis, blocking the abnormal conduction bundle and point of origin of the tachyarrhythmia. Specifically, under the monitoring of X-ray angiography machine, we establish access by puncturing the femoral vein, femoral artery, or subclavian vein, insert the electrode catheter into the heart, first “mark” the location of the abnormal structure causing the tachycardia, and then release a high frequency current of 500-750kHZ locally at the location. The “ablation” produces a high temperature in a small area, and through thermal efficiency, the water in the local lesion tissue evaporates and dries up the necrosis, resulting in uniform local tissue damage, a small area of 2-3mm, clear boundaries and easy control. The advantage of this method is that the trauma is minimally invasive, the cure rate is high, the hospital stay is short, and the nerves in the heart are the vegetative nervous system is not as sensitive as the nerves on the body surface, there is generally no severe pain, most of the domestic use of local anesthesia puncture site does not require general anesthesia, the patient is in a conscious state can communicate with the physician, most people do not have serious complications, is currently the best means of radical treatment of this type of heart disease patients. A small number of patients with tachycardia may recur after surgery, but the success rate can be further improved by reoperation.