Many patients have doubts about the treatment of various tachycardias by radiofrequency ablation, either exaggerating the risk or underestimating the difficulty. Since arrhythmia is an abnormality of cardiac bioelectricity, it cannot be seen by the naked eye. It is relatively abstract and difficult to use language to give patients an intuitive understanding. In order to facilitate the majority of patients to accurately understand the difficulty and risk of catheter ablation of their arrhythmia, we have produced this schematic diagram to enable patients to have a better understanding of it. It should be noted that this mainly reflects the vast majority of cases that are representative of each type of tachyarrhythmia, and some rare cases are not included.

As can be seen from the figure, many patients with paroxysmal supraventricular tachycardia (commonly referred to as supraventricular tachycardia) are completely unnecessary to worry about their ablation surgery. In fact, supraventricular ablation is the most basic introductory procedure for all doctors engaged in catheter ablation. It is like appendic surgery in general surgery, which can be done in 3 A hospitals. The difference between the levels of different doctors is mainly reflected in the length of the operation time and the severity of the patient's pain. High-level doctors usually complete a supraventricular ablation only requiring patients to lie on the operating table for 30 minutes to 1 hour. Moreover, a few doctors can also complete the operation through one side of the femoral vein, so that there is no need to puncture the neck, chest or the thigh roots on both sides, but only one side of the thigh root is not required, and the artery is not punctured. , 6 hours to go to the ground. Individual patients' lesions (usually bypass or slow path) may be close to a key tissue called the His bundle, which is relatively easy to cause damage to the atrioventricular conduction during ablation. A pacemaker is seriously required, but in fact, experience Rich doctors are also relatively safe, and third-degree blockages rarely occur. The more difficult is the adventitial bypass, but it is extremely rare in the first place. Second, if it is the left adventitial bypass, it can be easily ablated by coronary veins for slightly experienced doctors. Trouble, but with my personal experience of more than thousands of cases, I only encountered one case in China and one in India.

The ablation of atrial velocity and atrial flutter is relatively simple, and the success rate and time-consuming of the operation depend on the doctor's experience level. What is more troublesome is that for some patients who have undergone complicated congenital heart disease surgery, if a special cicatricial atrial tachycardia occurs, ablation is relatively difficult. Idiopathic (that is, patients who do not find organic heart disease by ultrasound, CT and other examinations) have a great difficulty in ventricular tachycardia. Generally, the ablation rate of common parts is high, but the ventricular tachycardia in special parts may be difficult.

The ablation of atrial fibrillation is currently difficult. The biggest problem is that the lesion is wide and stubborn, and it is difficult to ablate it completely. In general, the older the patient, the longer the medical history, the larger the left atrium, the longer the drinking time, and the diabetes and dilated cardiomyopathy, the lower the success rate.

Organic ventricular tachycardia is the most difficult and risky operation in catheter ablation. Generally speaking, only a few doctors in top hospitals can master it. Patients should fully understand before undergoing ablation.