Some patients responded that they presented with paroxysmal tachycardia in some cases and felt very uncomfortable and did not know what was the cause. After we examined the patients, we found that they were suffering from pre-excitation syndrome. Pre-excitation syndrome is a very specific type of heart disease, which is mainly due to the fact that during the embryonic development of the heart, myocardial tissue is left behind in the atrioventricular ring structure, making an additional “bypass” for the heart’s excitation conduction. Preexcitation syndrome is a congenital disorder that most patients do not know they have, but it is very dangerous and affects their work, life and studies. Pre-excitation syndrome may develop into heart enlargement in the long run. Pre-excitation syndrome can cause a drop in blood pressure, difficulty in breathing, chest pain and fainting in severe cases. Therefore, patients should learn more about medical knowledge, take more care of their own bodies, find out that they are not feeling well and have these symptoms, they should never ignore them and go to a regular hospital for diagnosis in a timely manner, just as the disease of pre-excitation syndrome can be positively diagnosed and reasonably treated to improve their quality of life to the maximum. The treatment of preexcitation syndrome has three methods: medication, catheter radiofrequency ablation, and surgery. Pre-excitation syndrome drug treatment: Pre-excitation syndrome patients with episodes of atrioventricular folding tachycardia can be treated with reference to atrioventricular node folding tachycardia. Digitalis can shorten the bypass channel induction period, and it is advisable to switch to
IC drugs in combination with amiodarone can act on both AV node and bypass channels. Patients with pre-excitation syndrome should be electrically resuscitated immediately if syncope or hypotension occurs during episodes of atrial flutter and fibrillation. Therapeutic agents can be combined with drugs for the bypass channel and AV node inactivity, such as procainamide and propranolol or propafenone and amiodarone. The indications for surgical or transcatheter radiofrequency ablation for the treatment of the pre-excitation syndrome are: 1) frequent episodes of tachycardia that are not adequately controlled by drugs; 2) rapid conduction of atrial fibrillation or flutter through the bypass channel with a very fast ventricular rate; 3) failure of drug therapy to significantly slow down the ventricular rate during tachycardia; 4) electrophysiological examination showing that the antegrade conduction interval of the bypass channel is shorter than 250 The ablation procedure should also be considered if pharmacological treatment is usually ineffective. Radiofrequency ablation therapy can be considered at an earlier stage and eventually replace most drug therapy.