Acute Lesion Imaging in Predicting Chronic Tissue Injury in the Ventricles

Frontiers in Cardiovascular Medicine

Mihail Chelu¹  Eugene Kholmovski²  Michel Barakat³  Takano Yamaguchi⁴  Aneesh Dhorepatil⁵  Charbel Noujaim⁵  Saihariharan Nedunchezhian⁵  Chao Huang⁵  Christopher Pottle⁵  Mario Mekhael⁵  Abdel Hadi El Hajjar⁵  Lilas Dagher⁵  Yichi Zhang⁵  Tarek Ayoub⁵  Nassir Marrouche⁵ 

[1] Baylor Heart Clinic, Baylor College of Medicine, Houston, TX, United States;Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States;Department of Cardiology, PeaceHealth, Bellingham, WA, United States;Department of Cardiology, Saga University, Saga, Japan;Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States;

关键词: arrhythmia;    ventricular ablation;    catheter ablation;    animal model;    electrophysiology;   

DOI  :  10.3389/fcvm.2021.791217

来源: DOAJ

【 摘 要 】

BackgroundChronic lesion formation after cardiac tissue ablation is an important indicator for procedural outcome. Moreover, there is a lack of knowledge regarding the features that predict chronic lesion formation.ObjectiveThe aim of this study is to determine whether acute lesion visualization using late gadolinium enhanced magnetic resonance imaging (LGE-MRI) can reliably predict chronic lesion size.MethodsFocal lesions were created in left and right ventricles of canine models using either radiofrequency (RF) ablation or cryofocal ablation. Multiple ablation parameters were used. The first LGE-MRI was acquired within 1–5 h post-ablation and the second LGE-MRI was obtained 47–82 days later. Corview software was used to perform lesion segmentations and size calculations.Results:Fifty-Five lesions were created in different locations in the ventricles. Chronic volume size decreased by a mean of 62.5 % (95% CI 58.83–67.97, p < 0.0005). Similar regression of lesion volume was observed regardless of ablation location (p = 0.32), ablation technique (p = 0.94), duration (p = 0.37), power (p = 0.55) and whether lesions were connected or not (p = 0.35). There was no significant difference in lesion volume reduction assessed at 47–54 days and 72–82 days after ablation (p = 0.31). Chronic lesion volume was equal to 0.32 of the acute lesion volumes (R2 = 0.75).ConclusionChronic tissue injury related to catheter ablation can be reliably modeled as a linear function of the acute lesion volume as assessed by LGE-MRI, regardless of the ablation parameters.

【 授权许可】

Unknown