Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China.
Clin Cardiol. 2023 Apr;46(4):425-430. doi: 10.1002/clc.23998. Epub 2023 Feb 21.
Identify idiopathic ventricular tachycardia in patients with ventricular premature beats was required to have effectively treatment.
The aim of this study is to investigate the predictive value of Tp-Te interval, Tp-Te/QT ratio, and QRS-T angle of idiopathic ventricular tachycardia in patients with idiopathic ventricular premature beats.
One hundred and seventy-eight patients who had undergone premature ventricular complex/ventricular tachycardia (PVC/VT) ablation between January 1, 2020 and August 30, 2022 constituted our study population as ventricular arrhythmia group. Seventy-five healthy people were selected as control group. Patients with no episode of VT were classified as PVC group, while with any episode of VT that has the same morphology with PVC were classified as PVC with VT group. Patients in PVC with VT group were divided into two groups: nonsustained VT group (duration of any episode of VT below 30 s) and sustained VT group (duration of any episode of VT over 30 s). Tp-Te interval, Tp-Te/QT ratio and QRS-T angle were compared in groups.
Tp-Te interval, Tp-Te/QT ratio and patients with increased QRS-T angle in PVC with VT group were higher or more than those in PVC group (p < .001). The value of combined diagnosis of these indexes was higher. Tp-Te interval was longer in the sustained VT group compared to the nonsustained VT group (p = .009).
Tp-Te interval, Tp-Te/QT ratio, and QRS-T angle may have a predictive value of presence of idiopathic VT in patients with premature beats and the combined prediction of these indexes is more valuable. Tp-Te interval maybe helpful for prediction of sustained idiopathic VT.
识别室性早搏患者的特发性室性心动过速需要进行有效的治疗。
本研究旨在探讨特发性室性早搏患者特发性室性心动过速的 Tp-Te 间期、Tp-Te/QT 比值和 QRS-T 角的预测价值。
将 2020 年 1 月 1 日至 2022 年 8 月 30 日期间接受室性早搏/室性心动过速（PVC/VT）消融的 178 例患者作为室性心律失常组。选择 75 名健康人作为对照组。无 VT 发作的患者分为 PVC 组，而有与 PVC 相同形态的任何 VT 发作的患者分为 PVC 合并 VT 组。将 PVC 合并 VT 组患者分为非持续性 VT 组（任何一次 VT 发作持续时间<30s）和持续性 VT 组（任何一次 VT 发作持续时间>30s）。比较各组 Tp-Te 间期、Tp-Te/QT 比值和 QRS-T 角。
PVC 合并 VT 组的 Tp-Te 间期、Tp-Te/QT 比值和 QRS-T 角升高或高于 PVC 组（p<0.001）。这些指标联合诊断的价值更高。持续性 VT 组的 Tp-Te 间期较非持续性 VT 组长（p=0.009）。
Tp-Te 间期、Tp-Te/QT 比值和 QRS-T 角可能对早搏患者特发性 VT 的存在具有预测价值，这些指标的联合预测更有价值。Tp-Te 间期可能有助于预测持续性特发性 VT。
