Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Myocardial Disease
Endocardial and Epicardial Deformations in Cardiac Amyloidosis and Hypertrophic Cardiomyopathy
– 2-D Feature Strain Echocardiography –
Gianluca Di BellaFabio MinutoliAlessandro PingitoreConcetta ZitoAnna MazzeoGiovanni D. AquaroRita Di LeoAntonino RecuperoClaudia StancanelliSergio BaldariGiuseppe VitaScipione Carerj
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2011 Volume 75 Issue 5 Pages 1200-1208


Background: The aim of the present study was to analyze epicardial (EPI) and endocardial (ENDO) strain (S) in patients with transthyretin-related cardiac amyloidosis (TTR-CA) and hypertrophic cardiomyopathy (HCM) using echocardiography (TTE) with 2-dimensional feature tracking imaging (FTI). Methods and Results: Thirty-three subjects (11 with HCM, 11 with TTR-CA, and 11 healthy subjects as controls) with a New York Heart Association functional class ≤II underwent conventional TTE and FTI. TTE was used for the evaluation of left ventricle (LV) wall thickness, mass, systolic and diastolic function. FTI was used for the evaluation of EPI and ENDO longitudinal, and circumferential, and radial S. LV wall thickness and mass were higher in both TTR-CA and HCM in comparison with controls (P<0.001), but ejection fraction (EF) was similar among patients with TTR-CA, HCM and controls (63±6%, 64±6%, 61±5%, respectively). ENDO and EPI longitudinal and circumferential S and radial S were significantly lower in HCM and TTR-CA when compared with controls (P<0.01). No differences in EPI and ENDO longitudinal S, ENDO circumferential S and radial S were found between TTR-CA and HCM groups, while EPI circumferential S was significantly lower in the TTRCA group (6±3.3%) than in the HCM group (8.1±4.3%; P<0.0001). Conclusions: Longitudinal, circumferential and radial LV deformations are impaired in patients with TTR-CA and HCM with a preserved EF. Impairment of EPI circumferential strain is greater in TTR-CA than in HCM. (Circ J 2011; 75: 1200-1208)

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