The Relationship between Cardiac Magnetic Resonance-Assessed Replacement and Interstitial Fibrosis and Ventricular Arrhythmias in Hypertrophic Cardiomyopathy

Autor: Aleksandra Karabinowska-Małocha, Ewa Dziewięcka, Paweł Banyś, Małgorzata Urbańczyk-Zawadzka, Maciej Krupiński, Małgorzata Mielnik, Jacek Łach, Aleksandra Budkiewicz, Piotr Podolec, Łukasz Żydzik, Sylwia Wiśniowska-Śmiałek, Katarzyna Holcman, Magdalena Kostkiewicz, Paweł Rubiś
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Personalized Medicine; Volume 12; Issue 2; Pages: 294
ISSN: 2075-4426
DOI: 10.3390/jpm12020294
Popis: Non-sustained ventricular tachycardia (nsVT) creates the electrical basis for sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM). We aimed to evaluate the relationship between interstitial fibrosis on cardiac magnetic resonance (CMR) and nsVT in HCM. A total of 50 HCM patients underwent CMR with a 3 T scanner to determine the presence of replacement fibrosis expressed by late gadolinium enhancement (LGE), and interstitial fibrosis expressed by native T₁, post-contrast T₁, and extracellular volume (ECV). The incidence of nsVT was assessed by Holter monitoring. We detected nsVT in 14 (28%) out of 50 HCM patients. Replacement fibrosis expressed by LGE was present in 37 (74%) patients and only showed a trend towards a differentiation between the groups with and without nsVT (p = 0.07). However, the extent of LGE was clearly higher in the nsVT group (3.8 ± 4.9% vs. 7.94 ± 4.5%, p = 0.002) and was an independent predictor of nsVT in a multivariable regression analysis (OR 1.2; 95%CI 1.02–1.4; p = 0.02). No relationship was observed between interstitial fibrosis and nsVT. To conclude, it was found that it is not the mere presence but the actual extent of LGE that determines the occurrence of nsVT in HCM patients; the role of interstitial fibrosis remains unclear.
Databáze: OpenAIRE