Symptoms of type B preexcitation syndrome?

summary

Type B preexcitation syndrome is a kind of abnormal phenomenon of atrioventricular conduction, which causes premature activation of some ventricles. It is also called preexcitation syndrome or WPW syndrome. It is a rare arrhythmia, and its diagnosis mainly depends on electrocardiogram. In addition to palpitation and other discomfort, pre excitation syndrome can also produce severe conditions such as shock, heart failure and even death. Let's talk about the symptoms of type B preexcitation syndrome.

Symptoms of type B preexcitation syndrome?

Type B preexcitation syndrome is a simple preexcitation without symptoms. It can be divided into two situations, one is the occurrence of atrial flutter or atrial fibrillation in patients, ventricular rate is more than 200 times per minute, this is in addition to the patient will produce palpitations and other discomfort, but also cause shock, heart failure, serious and even death, etc; When the ventricular rate reaches 300 beats per minute, the auscultation heart sound is only half of the ECG, which indicates that the ventricle cannot produce effective mechanical contraction.

The etiology of this disease is congenital atrioventricular accessory pathway. Most patients with this disease have no organic heart disease. Electrophysiological studies have shown that the anion channel of the bypass is very fast, leading to early arrival of the ventricular end of the bypass, thus activating the adjacent myocardium. Generally speaking, there are two conduction pathways between atrioventricular in patients with preexcitation syndrome, so it is easier to produce reentrant and reentrant tachycardia than ordinary people. At present, there are several known accessory pathways, one is atrioventricular accessory pathway; The second is the atrioventricular accessory pathway; The third is the junction and bundle chamber connection.

If it is complicated with atrial fibrillation or atrial flutter, synchronous direct current cardioversion should be used. Drug therapy such as lidocaine can slow down the ventricular rate. If it is supraventricular tachycardia and other conditions, antiarrhythmic drugs can be used as long-term oral to prevent attacks. If the ventricular rate reaches about 200 times per minute, laser or freezing method can be used to prevent attacks.

matters needing attention

Type B preexcitation syndrome is the same as other heart diseases in daily life, that is, our heart can not bear too much pressure, so we must pay attention to the cultivation of daily living habits, smoking cessation, alcohol abstinence, avoid overwork, avoid emotional excitement, prohibit staying up late, pay attention to avoid cold and so on.