Study On Dual Atrioventricular Nodal Pathway And Concealed Accessory Pathway

Objective This study aimed to finding the faster, simpler,better methods that evaluate AVNRT and AVRT. We analyzed the surface ECG of 59 patients with dual atrioventricular nodal pathway(DAVNP) and the surface ECG of 40 patients with concealed W-P-W syndrome, which were confirmed by radiofrequency catheter ablation (RFCA). During sinus rhythm and tachycardia, summarized the distinguishing features of ECG to increase the diagnostic accuracy of atrioventricular nodal reentrant tachycardia (AVNRT)and concealed W-P-W syndrome(AVRT).Methods Five-nine patients with AVNRT and forty patients with AVRT who were confirmed by RFCA and divided into A and B groups. 1.We compared the surface ECC in 12 leads during sinus rhythm between A and B groups. 2.We compare the surface ECC in V1 leads during sinus rhythmwith tachycardia and try to find the relation between the different locations of retrograde P' wave and QRS complex in V1 lead.Results 1. During sinus rhythm with rSr' complex in VI lead; there were 6 with rSr' complex in A group patients' ECG, the occurrence rate was 12.5 %;There were 5 patients in B group patients' ECG ,the occurrence rate 10.17% ; P>0.05. But during sinus rhythm with qRs complex in V6 lead; there were 21 in A group patients' ECG, the occurrence rate was 35.6%;There were 24 patients in B group patients' ECG ,the occurrence rate 60.0% ; P <0.05. 2. Compare the surface ECC during sinus rhythm with tachycardia, because of retrograde P( P'), QRS wave becomes rSr' in V1 leads, there were 43 in A group patients' ECG, the occurrence rate was 72.88%; There were 7 patients in B group patients' ECG , the occurrence rate 17.5% ; P <0.01. Conclusions 1.To observe the qRs complex in V6 lead during sinus rhythm...