ArticleAnnals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc2025
Periprocedural Outcomes of VT Ablation in Ischemic Compared to Non-Ischemic Dilated Cardiomyopathy.
Article in Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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- Periprocedural Outcomes of VT Ablation in Ischemic Compared to Non-Ischemic Dilated Cardiomyopathy.Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc · 2025Article
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10 authors.
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Abstract
backgroundPatients with structural heart disease undergoing catheter ablation (CA) for VT have shown higher procedural-related adverse events. However, periprocedural outcomes comparing CA for VT in different cardiomyopathies are not well known. We aim to study short-term outcomes of CA in ischemic (ICM) compared to non-ischemic dilated cardiomyopathy (NIDCM).
methodsThe national readmission database (2016-2020) was used to identify hospitalizations for CA for VT. Cohorts were stratified based on underlying cardiomyopathy. A Propensity Score Matching (PSM) model matched ICM to NIDCM patients. Pearson's Chi-squared test was applied to PSM-matched cohorts to compare outcomes.
resultsAmong 7081 hospitalizations for VT ablation, 17.5% of patients had underlying NIDCM, while 82.5% of patients had ICM. On a PSM analysis (N: 3534), ICM patients had higher incidences of sudden cardiac arrest (SCA) (7.9% vs. 5.6%, p < 0.001), major adverse cardiac events (11.1% vs. 9%, p: 0.006), and cardiogenic shock (10.8% vs. 8.5%, p: 0.001). Interestingly, NIDCM patients were found to have much higher rates of pericardial complications (6.09% vs. 1.90%, p < 0.001), while the mortality difference was not significant (p > 0.05). From 2016 to 2020, in-hospital mortality rates have not changed significantly in ICM and NIDCM cases admitted for VT ablation (p-trend > 0.05); however, there was a decreasing trend of SCA cases in NIDCM hospitalizations (8.7%-3.4%, p-trend: 0.028). NIDCM patients had higher readmission rates at 30 days (18% vs. 15.5%, p: 0.01), 90-day (32.3% vs. 29.6%, p: 0.041), and 180-day (44% vs. 38.2%, p: 0.001).
conclusionVT ablation in ICM patients was associated with higher non-fatal periprocedural events. NIDCM patients showed higher all-cause readmission rates.
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