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Are artificial organs still needed?

机译：仍然需要人造器官吗？

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Conclusions There was no correlation between the AF pathway ablation site and the QRS axis during ADT. The 12-lead ECG during maximal pre-excitation does not predict the proper site of tricuspid annulus ablation in patients with A-V conduction over an AF pathway.Aims Unlike in the Wolff-Parkinson-White syndrome, there has been no systematic study on the role of the pre-excitation pattern in predicting the ablation site in patients with atriofascicular (AF) pathways. We assessed in a large cohort the value of the 12-lead electrocardiogram (ECG) during antidromic tachycardia (ADT) to predict the site of ablation.Methods and results Forty-five patients were studied, 23 males (51%), mean age of 27 ± 12 years with 46 AF pathways and 48 ADT using the AF pathway for A-V conduction. Inclusion required induction of a sustained ADT and successful ablation. Ablation site was assessed during LAO 45° projection and clockwise classified as hours in posteroseptal, posterolateral, lateral, anterolateral, and anteroseptal tricuspid annulus as follows: 05:00-07:00, >07:00-08:00, >08:00-09:00, >09:00-11:00, and >11:00-13:00 o'clock. The QRS axis was assessed during ADT and classified as normal (>+15°), horizontal (+15° to -30°), and superior (<-30°). During ADT axis was superior (-57° ± 10°) in 15 (31%), horizontal (-11° ± 14°) in 22 (46%), and normal (+45° ± 16°) in 11 (23%) patients. The correct ablation site did not differ between the different groups of QRS axis. QRS width during ADT was narrower in patients with a normal when compared with a horizontal and leftward axis (127 ± 14 vs. 145 ± 12 ms, P < 0.0001), and the V-H interval was shorter (4 ± 3 ms vs. 19 ± 22 ms, P = 0.03).
机译：结论ADT期间AF路径消融部位与QRS轴之间无相关性。在进行最大程度的预激时，12导联心电图不能预测通过AF途径进行AV传导的患者三尖瓣环消融的正确位置。与Wolff-Parkinson-White综合征不同，尚无系统的研究激励模式在预测房颤（AF）通路患者的消融部位中的作用。我们在一个大队列中评估了抗风速性心动过速（ADT）期间12导联心电图（ECG）的值，以预测消融部位。方法和结果研究了45例患者，其中23例男性（51％），平均年龄27±12年，其中46条AF通路和48条ADT使用AF通路进行AV传导。纳入需要诱导持续的ADT和成功的消融。在LAO 45°投影过程中评估了消融部位，并将其顺时针分为以下几个小时：后房，后外侧，外侧，前外侧和前房三尖瓣环，分别为：05：00-07：00，> 07：00-08：00，> 08： 00-09：00，> 09：00-11：00和> 11：00-13：00。在ADT期间对QRS轴进行了评估，分为正常（> + 15°），水平（+ 15°至-30°）和上方向（<-30°）。在ADT期间，轴的最佳位置（-57°±10°）在15（31％）中，水平（-11°±14°）在22（46％）中，正常（+ 45°±16°）在11（23） ％） 耐心。不同组的QRS轴之间正确的消融部位没有差异。与水平轴和左轴相比，正常患者的ADT期间QRS宽度较窄（127±14 vs. 145±12 ms，P <0.0001），VH间隔更短（4±3 ms与19± 22毫秒，P = 0.03）。

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