Dataset related to the article "Ventricular tachycardia ablation with pentaspline pulsed field technology in two patients with ischemic cardiomyopathy""

This record contains raw data related to the article "Ventricular tachycardia ablation with pentaspline pulsed field technology in two patients with ischemic cardiomyopathy" Abstract Introduction: Due to its unique features, pulsed field ablation (PFA) could potentially overcome some limitations of current radiofrequency (RF) ventricular tachycardia (VT) ablation. However, data on the use of PFA in this setting are currently scarce. Methods: Two patients with ischemic cardiomyopathy and previously failed RF VT ablations were treated with PFA. Results: A total of 18 bipolar applications (case1) and seven bipolar applications (case2) were delivered to the infero-lateral and infero-septal areas (case1) and to the apical lateral left ventricular (LV) wall (case2), placing the catheter adjacent to the LV wall in the flower configuration. A rapid cessation of VT and restoration of sinus rhythm were observed during PFA delivery in both cases. Further applications were delivered to achieve complete elimination of late potentials. In case 1, during the in-hospital stay, ECG monitoring did not show VT recurrences. Six-month follow-up was uneventful, with no VT recurrences at ICD interrogation. In case 2, due to postdischarge VT recurrences, a second RF procedure was scheduled 1 month later. The voltage map performed in sinus rhythm showed a low-voltage zone located at the anterolateral wall, near the previous ablation site. Numerous late potentials were recorded. At the 6-month follow-up, no further VT recurrences were documented after RF redo ablation. Conclusion: While the speed of application and potential transmural effect can facilitate the ablation of large diseased endocardial areas, early loss of contact due to difficult pentaspline catheter manipulation in the LV could lead to insufficient contact force and, consequently, inadequate energy penetration. Keywords: ischemic cardiomyopathy; pulsed field ablation; radiofrequency; scar‐related; ventricular tachycardia. This dataset is not public. It’s available upon reasonable requesto to the [e-mail].本数据集收录了与论文《两例缺血性心肌病患者采用五分支脉冲场消融技术行室性心动过速消融术》相关的原始数据。 摘要 引言：脉冲场消融（pulsed field ablation, PFA）凭借其独特的生物学特性，有望克服当前射频（radiofrequency, RF）室性心动过速（ventricular tachycardia, VT）消融术所存在的部分临床局限，但目前该技术在该场景中的应用数据仍较为匮乏。 方法：纳入2例既往接受RF VT消融治疗但失败的缺血性心肌病患者，采用PFA进行消融治疗。 结果：病例1共实施18次双极消融放电，靶区域为下外侧及下间隔心肌区；病例2共实施7次双极消融放电，靶区域为心尖外侧左心室（left ventricular, LV）壁，术中采用花状构型将导管贴靠于左心室壁。两例患者在PFA放电过程中均观察到室性心动过速快速终止并恢复窦性心律。后续追加消融放电以彻底消除晚电位。 病例1住院期间，心电监护未提示VT复发；术后6个月随访结果平稳，经植入式心律转复除颤器（implantable cardioverter defibrillator, ICD）程控检查未发现VT复发。 病例2出院后出现VT复发，于术后1个月再次接受RF消融术。术中窦性心律下的电压标测显示，既往消融位点附近的前外侧壁存在低电压区域，且记录到大量晚电位。该患者接受再次RF消融术后，6个月随访期间未再出现VT复发。 结论：尽管PFA的放电速度快且具备跨壁消融的潜在优势，可辅助消融大范围病变心内膜区域，但左心室内五分支导管操作难度较高，易早期失去贴靠，进而导致贴靠压力不足、能量渗透不充分。 关键词：缺血性心肌病；脉冲场消融；射频消融；瘢痕相关性；室性心动过速。 本数据集暂未公开，若有合理申请需求，请发送邮件至[e-mail]获取。