Cardiac MRI Assessed Left Ventricular Hypertrophy in Differentiating Hypertensive Heart Disease from Hypertrophic Cardiomyopathy Attributable to a Sarcomeric Gene Mutation

Overview

Journal Eur Radiol

Specialty Radiology

Date 2011 Jan 29

PMID 21274714

Citations 13

Authors

Petri Sipola

Jarkko Magga

Minna Husso

Pertti Jaaskelainen

Keijo Peuhkurinen

Johanna Kuusisto

Affiliations

Soon will be listed here.

Abstract

Objective: To evaluate the value of cardiac magnetic resonance imaging (CMRI)-assessed left ventricular hypertrophy (LVH) in differentiating between hypertensive heart disease and hypertrophic cardiomyopathy (HCM).

Methods: 95 unselected subjects with mild-to-moderate hypertension, 24 patients with HCM attributable to the D175N mutation of the α-tropomyosin gene and 17 control subjects were studied by cine CMRI. Left ventricular (LV) quantitative and qualitative characteristics were evaluated.

Results: LV maximal end-diastolic wall thickness, wall thickness-to-LV volume ratio, end-diastolic septum thickness and septum-to-lateral wall thickness ratio were useful measures for differentiating between LVH due to hypertension and HCM. The most accurate measure for identifying patients with HCM was the LV maximal wall thickness ≥ 17 mm, with a sensitivity, specificity, negative predictive value, positive predictive value, and accuracy of 90%, 93%, 86%, 95% and 91%, respectively. LV maximal wall thickness in the anterior wall, or regional bulging in left ventricular wall was found only in patients with HCM. LV mass index was not discriminant between patients with HCM and those with LVH due to hypertension.

Conclusion: LV maximal thickness measured by CMRI is the best anatomical parameter in differentiating between LVH due to mild-to-moderate hypertension and HCM attributable to a sarcomeric mutation. CMRI assessment of location and quality of LVH is also of value in differential diagnosis.

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