Cardiovascular magnetic resonance predictors of heart failure in hypertrophic cardiomyopathy: the role of myocardial replacement fibrosis and the microcirculation

Raphael, Claire E., Mitchell, Frances M., Kanaganayagam, Gajen Sunthar, Liew, Alphonsus C., Di Pietro, Elisa, Vieira, Miguel Silva, Kanapeckaite, Lina, Newsome, Simon J., Gregson, John, Owen, Ruth, Hsu, Li Yueh, Vassiliou, Vassilios ORCID:, Cooper, Robert, Ali, Aamir, Ismail, Tevfik F., Wong, Brandon, Sun, Kristi, Gatehouse, Peter D., Firmin, David, Cook, Stuart A., Frenneaux, Michael, Arai, Andrew, O’Hanlon, Rory, Pennell, Dudley J. and Prasad, Sanjay K. (2021) Cardiovascular magnetic resonance predictors of heart failure in hypertrophic cardiomyopathy: the role of myocardial replacement fibrosis and the microcirculation. Journal of Cardiovascular Magnetic Resonance, 23. ISSN 1097-6647

[thumbnail of Accepted_Manuscript]
PDF (Accepted_Manuscript) - Accepted Version
Download (580kB) | Preview
[thumbnail of Raphael_JoCMR_2021]
PDF (Raphael_JoCMR_2021) - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview


Introduction: Heart failure (HF) in hypertrophic cardiomyopathy (HCM) is associated with high morbidity and mortality. Predictors of HF, in particular the role of myocardial fibrosis and microvascular ischemia remain unclear. We assessed the predictive value of cardiovascular magnetic resonance (CMR) for development of HF in HCM in an observational cohort study. Methods: Serial patients with HCM underwent CMR, including adenosine first-pass perfusion, left atrial (LA) and left ventricular (LV) volumes indexed to body surface area (i) and late gadolinium enhancement (%LGE- as a % of total myocardial mass). We used a composite endpoint of HF death, cardiac transplantation, and progression to NYHA class III/IV. Results: A total of 543 patients with HCM underwent CMR, of whom 94 met the composite endpoint at baseline. The remaining 449 patients were followed for a median of 5.6 years. Thirty nine patients (8.7%) reached the composite endpoint of HF death (n = 7), cardiac transplantation (n = 2) and progression to NYHA class III/IV (n = 20). The annual incidence of HF was 2.0 per 100 person-years, 95% CI (1.6–2.6). Age, previous non-sustained ventricular tachycardia, LV end-systolic volume indexed to body surface area (LVESVI), LA volume index ; LV ejection fraction, %LGE and presence of mitral regurgitation were significant univariable predictors of HF, with LVESVI (Hazard ratio (HR) 1.44, 95% confidence interval (95% CI) 1.16–1.78, p = 0.001), %LGE per 10% (HR 1.44, 95%CI 1.14–1.82, p = 0.002) age (HR 1.37, 95% CI 1.06–1.77, p = 0.02) and mitral regurgitation (HR 2.6, p = 0.02) remaining independently predictive on multivariable analysis. The presence or extent of inducible perfusion defect assessed using a visual score did not predict outcome (p = 0.16, p = 0.27 respectively). Discussion: The annual incidence of HF in a contemporary ambulatory HCM population undergoing CMR is low. Myocardial fibrosis and LVESVI are strongly predictive of future HF, however CMR visual assessment of myocardial perfusion was not.

Item Type: Article
Uncontrolled Keywords: cardiovascular magnetic resonance,fibrosis,heart failure,hypertrophic cardiomyopathy,microvascular ischemia,myocardial perfusion,prognosis,radiological and ultrasound technology,radiology nuclear medicine and imaging,cardiology and cardiovascular medicine ,/dk/atira/pure/subjectarea/asjc/3600/3614
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 03 Feb 2021 00:59
Last Modified: 19 May 2023 09:37
DOI: 10.1186/s12968-021-00720-9

Actions (login required)

View Item View Item