PDF(Pubmed)
Abstract：
UNASSIGNED: Mapping and radiofrequency ablation (RFA) of premature ventricular contractions (PVC) that show diurnal changes during the day, and which are rare during 3-D mapping has become very difficult. The most delayed signal mapping in the right ventricular outflow tract (RVOT) with RV apical pacing might be useful in these situations and we called this method Secret Signal Delayed Mapping (SSDM).
UNASSIGNED: To compare the classical RFA and SSDM in patients with PVC.
UNASSIGNED: A total of 60 patients with > 10% PVCs detected in 24-hour rhythm Holter recordings and admitted to the laboratory for RFA, 30 of whom underwent classical ablation according to the local activation time (LAT) and 30 of whom were included in the SSDM group, were included in our study. In patients who did not have enough PVCs during 3-D mapping, a catheter was placed in the right ventricle, and delayed signals after the ventricular electrogram (EGM) were collected by fixed pacing and such patients were included in the SSDM group.
UNASSIGNED: In all patients, PVC originated from the RVOT. The mean follow-up time of the patients was 10.2 ±1.6 months. Recurrence was detected in 11 (36.6%) patients in the LAT group and 4 (13.3%) patients in the SSDM group. Signal earlyness in LAT mapping was significantly higher in the LAT group (p < 0.001). In the SSDM group, an average of 128 ±24 delayed signals were collected, the mean delayed signal time was 77.6 ±17.7 ms. In the SSDM group, the average distance between the earliest signal on the LAT and the most delayed signal on the SSDM was 4.8 ±1.2 mm.
UNASSIGNED: In the treatment of PVCs with RFA, the SSDM method can be used in addition to classical ablation.
UNASSIGNED: To compare the classical RFA and SSDM in patients with PVC.
UNASSIGNED: A total of 60 patients with > 10% PVCs detected in 24-hour rhythm Holter recordings and admitted to the laboratory for RFA, 30 of whom underwent classical ablation according to the local activation time (LAT) and 30 of whom were included in the SSDM group, were included in our study. In patients who did not have enough PVCs during 3-D mapping, a catheter was placed in the right ventricle, and delayed signals after the ventricular electrogram (EGM) were collected by fixed pacing and such patients were included in the SSDM group.
UNASSIGNED: In all patients, PVC originated from the RVOT. The mean follow-up time of the patients was 10.2 ±1.6 months. Recurrence was detected in 11 (36.6%) patients in the LAT group and 4 (13.3%) patients in the SSDM group. Signal earlyness in LAT mapping was significantly higher in the LAT group (p < 0.001). In the SSDM group, an average of 128 ±24 delayed signals were collected, the mean delayed signal time was 77.6 ±17.7 ms. In the SSDM group, the average distance between the earliest signal on the LAT and the most delayed signal on the SSDM was 4.8 ±1.2 mm.
UNASSIGNED: In the treatment of PVCs with RFA, the SSDM method can be used in addition to classical ablation.
摘要：
■显示白天昼夜变化的室性早搏（PVC）的标测和射频消融（RFA），并且在3-D映射期间很少见已经变得非常困难。右心室流出道（RVOT）中最延迟的信号标测在这些情况下可能很有用，我们将这种方法称为秘密信号延迟标测（SSDM）。
■比较PVC患者的经典RFA和SSDM。
■共有60名患者在24小时节律Holter记录中检测到>10％的PVC，并进入实验室进行RFA，其中30例根据局部激活时间（LAT）进行经典消融，30例纳入SSDM组，包括在我们的研究中。在3-D映射期间没有足够的PVC的患者中，在右心室放置了一根导管,通过固定起搏收集心室电描记图（EGM）后的延迟信号，并将此类患者纳入SSDM组。
■在所有患者中，PVC起源于RVOT。患者平均随访时间为10.2±1.6个月。在LAT组中11例（36.6％）患者和SSDM组中4例（13.3％）患者中检测到复发。LAT定位中的信号早期在LAT组中显著更高(p<0.001)。在SSDM组中，平均收集了128±24个延迟信号，平均延迟信号时间为77.6±17.7ms。在SSDM组中，LAT上最早的信号与SSDM上延迟最大的信号之间的平均距离为4.8±1.2mm。
■在用RFA治疗PVC时，除经典消融外，还可以使用SSDM方法。
■比较PVC患者的经典RFA和SSDM。
■共有60名患者在24小时节律Holter记录中检测到>10％的PVC，并进入实验室进行RFA，其中30例根据局部激活时间（LAT）进行经典消融，30例纳入SSDM组，包括在我们的研究中。在3-D映射期间没有足够的PVC的患者中，在右心室放置了一根导管,通过固定起搏收集心室电描记图（EGM）后的延迟信号，并将此类患者纳入SSDM组。
■在所有患者中，PVC起源于RVOT。患者平均随访时间为10.2±1.6个月。在LAT组中11例（36.6％）患者和SSDM组中4例（13.3％）患者中检测到复发。LAT定位中的信号早期在LAT组中显著更高(p<0.001)。在SSDM组中，平均收集了128±24个延迟信号，平均延迟信号时间为77.6±17.7ms。在SSDM组中，LAT上最早的信号与SSDM上延迟最大的信号之间的平均距离为4.8±1.2mm。
■在用RFA治疗PVC时，除经典消融外，还可以使用SSDM方法。
