Erschienen in:
01.07.2016 | Cardiac
Hypertensive heart disease versus hypertrophic cardiomyopathy: multi-parametric cardiovascular magnetic resonance discriminators when end-diastolic wall thickness ≥ 15 mm
verfasst von:
Jonathan C. L. Rodrigues, Stephen Rohan, Amardeep Ghosh Dastidar, Iwan Harries, Christopher B. Lawton, Laura E. Ratcliffe, Amy E. Burchell, Emma C. Hart, Mark C. K. Hamilton, Julian F. R. Paton, Angus K. Nightingale, Nathan E. Manghat
Erschienen in:
European Radiology
|
Ausgabe 3/2017
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Abstract
Objectives
European guidelines state left ventricular (LV) end-diastolic wall thickness (EDWT) ≥15mm suggests hypertrophic cardiomyopathy (HCM), but distinguishing from hypertensive heart disease (HHD) is challenging. We identify cardiovascular magnetic resonance (CMR) predictors of HHD over HCM when EDWT ≥15mm.
Methods
2481 consecutive clinical CMRs between 2014 and 2015 were reviewed. 464 segments from 29 HCM subjects with EDWT ≥15mm but without other cardiac abnormality, hypertension or renal impairment were analyzed. 432 segments from 27 HHD subjects with EDWT ≥15mm but without concomitant cardiac pathology were analyzed. Magnitude and location of maximal EDWT, presence of late gadolinium enhancement (LGE), LV asymmetry (>1.5-fold opposing segment) and systolic anterior motion of the mitral valve (SAM) were measured. Multivariate logistic regression was performed. Significance was defined as p<0.05.
Results
HHD and HCM cohorts were age-/gender-matched. HHD had significantly increased indexed LV mass (110±27g/m2 vs. 91±31g/m2, p=0.016) but no difference in site or magnitude of maximal EDWT. Mid-wall LGE was significantly more prevalent in HCM. Elevated indexed LVM, mid-wall LGE and absence of SAM were significant multivariate predictors of HHD, but LV asymmetry was not.
Conclusions
Increased indexed LV mass, absence of mid-wall LGE and absence of SAM are better CMR discriminators of HHD from HCM than EDWT ≥15mm.
Key Points
• Hypertrophic cardiomyopathy (HCM) is often diagnosed with end-diastolic wall thickness ≥15mm.
• Hypertensive heart disease (HHD) can be difficult to distinguish from HCM.
• Retrospective case-control study showed that location and magnitude of EDWT are poor discriminators.
• Increased left ventricular mass and midwall fibrosis are independent predictors of HHD.
• Cardiovascular magnetic resonance parameters facilitate a better discrimination between HHD and HCM.