Left ventricular myocardial strain responding to chronic pressure overload in patients with resistant hypertension evaluated by feature-tracking CMR

Figures

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  Fig. 1. The comparisons of LV global longitudinal (a), radial (b), and circumferential (c) strain among RH patients with and without LGE and controls. LGE, late gadolinium enhancement; LV, left ventricular; RH, resistant hypertension

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  Fig. 2. a LGE images depicting the focal myocardial fibrosis in LGE + RH patients. Short- and long-axis LGE images depicting an ischemic (red arrowheads) and non-ischemic (white arrowheads) pattern in 21 (42%) LGE + RH patients. b Schematic representation of fibrosis localization in LGE + RH patients. LGE areas were predominantly localized in the LV basal inferior (segment 4) and inferolateral (segment 5) segments, whereas midventricular anteroseptal (segment 8) and apical septal (segment 14) segments showed no focal myocardial fibrosis. LGE, late gadolinium enhancement; LV, left ventricular; RH, resistant hypertension

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  Fig. 3. The associations of LV mass index (a) and LVSVi (b) with LV global deformation parameters in RH patients. The gray shade indicates the 95% confidence interval. Increase in LV mass index and decrease in LVSVi were associated with decrease in longitudinal, radial, and circumferential strain. LV, left ventricular; LVSVi, left ventricular stroke volume index; RH, resistant hypertension