频域与时域颤动波特征组合用于增强导管消融后持续性心房颤动复发的预测

利用持续性心房颤动患者颤动波的先进时频特征预测导管消融结局

Catheter Ablation Outcome Prediction With Advanced Time-Frequency Features of the Fibrillatory Waves From Patients in Persistent Atrial Fibrillation

针对持续性房颤导管消融成功率有限的问题，本文结合f波的NFWA、SE与AMSA等频率和振幅特征，将术后复发预测判别能力较单项指标提升15%至23%。

持续性心房颤动体表颤动波的谱分布复杂度预测导管消融术后复发

Spectral Distribution Complexity of the Surface Fibrillatory Waves Predicts Post-Catheter Ablation Relapse in Persistent Atrial Fibrillation

本文提出用C0复杂度刻画持续性房颤患者体表颤动波功率谱分布的组织化程度，发现其可预测导管消融术后9个月复发，且与主导频率结合后分类准确率提升至76.58%。

Influence of spatially modified tissue on atrial fibrillation patterns: Insight from solutions of the FitzHugh-Nagumo equations

We study the interplay between traveling action potentials and spatial inhomogeneities in the FitzHugh-Nagumo model to investigate possible mechanisms for the occurrence of fibrillatory states in the atria of the heart. Different dynamical patterns such as ectopic foci, localized and meandering spiral waves are found depending on the characteristics of the inhomogeneities. Their appearance in dependence of the size and strength of the inhomogeneities is quantified by phase diagrams. Furthermore it is shown that regularly paced waves in a region R, that is connected by a small bridge connection…

A Simple Model for Identifying Critical Structures in Atrial Fibrillation

Atrial fibrillation (AF) is the most common abnormal heart rhythm and the single biggest cause of stroke. Ablation, destroying regions of the atria, is applied largely empirically and can be curative but with a disappointing clinical success rate. We design a simple model of activation wavefront propagation on a structure mimicking the branching network architecture of heart muscle and show how AF emerges spontaneously as age-related parameters change. We identify regions responsible for the initiation and maintenance of AF, the ablation of which terminates AF. The simplicity of the model allo…

Electroanatomic Mapping to determine Scar Regions in patients with Atrial Fibrillation

Left atrial voltage maps are routinely acquired during electroanatomic mapping in patients undergoing catheter ablation for atrial fibrillation. For patients, who have prior catheter ablation when they are in sinus rhythm, the voltage map can be used to identify low voltage areas using a threshold of 0.2 - 0.45 mV. However, such a voltage threshold for maps acquired during atrial fibrillation has not been well established. A prerequisite for defining a voltage threshold is to maximize the topologically matched low voltage areas between the electroanatomic mapping acquired during atrial fibrill…

心房颤动期间基于心电图的房室结传导呼吸调制估计

ECG-based estimation of respiratory modulation of AV nodal conduction during atrial fibrillation

本文提出利用合成数据训练1D-CNN，从RR序列、呼吸信号和AFR中估计房颤患者房室结传导的呼吸调制，并在临床深呼吸数据中验证了显著的患者间差异。