The constant and stable duration of all the ventricular beats with LBBB pattern, preceded and followed by normal ventricular complexes along with changing conduction ratios of 3:1 and 2:1 LBBB suggested Mobitz type II-like response in the LBB.Lamberto...
锯齿状的F波一般在Ⅱ,Ⅲ,AVF导联明显,有些时候在V1导联明显当心室率在150次/分的时候,应该想到可能有房扑2:1下传
Fig. 22.10 Atrial flutter with 2:1 conduction converting into 1:1 conduction with aberration. Figura 22.10 Flutter atriale con conduzione 2:1 che passa alla con duzione 1:1 con aberranza. Literature It trembled and fluttered in his hand like a captive bird. Gli fremeva e ondeggiava...
21-5). Postoperative atrial flutter typically has 2:1 conduction. If antiarrhythmic drugs have been given as part of routine prophylaxis, the ventricular rate with 2:1 block may be less (125 to 150 beats per minute). Atrial flutter with 2:1 AV block can be difficult to distinguish from ...
The regularity of the QRS complexes frequently present with atrial flutter helps to distinguish it from atrial fibrillation, though atrial flutter with variable conduction of the P waves can also occur. In this situation, there may be three P waves to one QRS complex, then a quick change to ...
This area may represent the exit site from the area of slow conduction, since pacing from this site showed concealed entrainment of the F wave, and a local electrogram to the onset of the F wave coincided with the pacing spike to the onset of the F wave. Follow-up of these 5 patients...
Catheter-based cryoablation may be an effective alternative with potential ad... GK Feld,JP Daubert,R Weiss,... - 《Heart Rhythm》 被引量: 39发表: 2008年 Identification of Extremely Slow Conduction in the Cavotricuspid Isthmus During Common Atrial Flutter Ablation Introduction: Complete isthmus ...
In 6 patients the tachycardia was mediated by the PM and in 10 by fast intrinsic AV conduction. 1 patient with , 2 with + AV (spontaneous ventricular rate less than 45 bpm) and 3 with AV needed ventricular backup-pacing during AF. In 7 patients a total of 15 attacks of atrial flutter...
1 conduction, but it may be slower. In situations where antiarrhythmic drugs are used which result in slowing of the flutter rate, in very large atria where the circuit length is increased or in very young individuals or individuals with accessory pathways, atrial flutter can conduct 1:1. ...
Junctional andventricular arrhythmiasusually cause interference withAV conductionof normal sinoatrial impulses while leaving atrial activation unaffected. The resulting (independent) coexistence of the sinoatrial activity (P wave) and the ectopicventricular activity(QRS-T) is commonly referred to asAV dissocia...