Preexcitation syndrome with tachycardia-bradycardia syndrome:Clinical analysis
- VernacularTitle:预激综合征合并快慢综合征的临床分析
- Author:
Jihong GUO
;
Yuan XU
;
Haicheng ZHANG
- Publication Type:Journal Article
- Keywords:
Preexcitation syndrome Tachycardia-bradycardia syndrome Supraventricular tachycardia Functional sick sinus syndrome
- From:
Chinese Journal of Practical Internal Medicine
2001;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the association between syncope and transient suppression of sinoatrial node in patients with preexcitation syndrome and paroxysmal supraventricular tachycardia (PSVT).Methods Twelve patients (male 8,female 4;age range:19-49 years) were enrolled due to WPW(Wolff-Parkinson-White) syndrome and syncope when the tachycardia terminated.The function of sinoatrial node was evaluated with clinical electrophysiologic study,and then radiofrequency catheter ablation (RFCA) or antitachycardia pacemaker were optimized for the patients with a follow-up of 2 to 5 years.Results Electrocardiographic features of the 12 patients were: ventricular preexcitation (type A in 7 and type B in 5) and long pause when tachycardias ended up.Electrophysiologic study revealed the function of sinoatrial node was normal.Four patients received antitachycardia pacing therapy,5 underwent RFCA,and 3 received both.The 2 to 5 years follow-up found no relapse of PSVT associated syncope.Conclusion Transient suppression of sinoatrial node might explain the mechanism of syncope with preexcitation and PSVT.However,the reason why such a small group of patients differ from the majority of preexcited cases in clinical course remains to be unsettled.The first choice of prevention and treatment for these patients should be eliminating PSVT.Conventional pacemaker implantation for preventing syncope seems to be unnecessary.
