1. Myocardial ischemia in patients with mild-to-moderate aortic stenosis: Interaction with cardiac remodeling and adverse events.
- Author
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Liga R, Giorgetti A, Bertasi M, Filidei E, and Gimelli A
- Subjects
- Humans, Male, Female, Aged, Prognosis, Middle Aged, Hypertrophy, Left Ventricular diagnostic imaging, Hypertrophy, Left Ventricular complications, Hypertrophy, Left Ventricular physiopathology, Aged, 80 and over, Echocardiography, Aortic Valve Stenosis diagnostic imaging, Aortic Valve Stenosis complications, Aortic Valve Stenosis physiopathology, Myocardial Ischemia diagnostic imaging, Myocardial Ischemia complications, Ventricular Remodeling, Myocardial Perfusion Imaging
- Abstract
Background: The association between aortic valve stenosis (AVS) and myocardial perfusion abnormalities has been incompletely characterized. We sought to assess the predictors of myocardial ischemia in patients with mild-to-moderate AVS, and its relationship with long-term prognosis., Methods: Eighty-nine patients with mild-to-moderate AVS (peak velocity between 2.6 and 4.0 m/second and aortic valve area > .6 cm
2 /m2 ), preserved left ventricular (LV) function, and either normal coronary arteries (28 patients) or non-obstructive coronary artery disease (<50% stenosis; 61 patients) were individuated. Myocardial perfusion imaging was performed using a cadmium-zinc-telluride camera, and the summed difference score (SDS) was computed. The presence of either LV hypertrophy (LVH) (LV mass index [LVMI] > 115 g/m2 [males] or 95 g/m2 [females]) or concentric LV remodeling (relative wall thickness: >.42) was determined at two-dimensional echocardiography., Results: Forty (45%) and 49 (55%) patients had mild and moderate AVS, respectively. Fifty (56%), 17 (19%), and 22 (25%) patients had normal LV geometry, concentric LV remodeling, and LVH, respectively. An interaction between LV remodeling and inducible ischemia was revealed with progressively higher values of SDS in patients with normal LV geometry (3 ± 3), concentric remodeling (4 ± 2), and LVH (7 ± 2) (P < .001). Accordingly, a moderate correlation existed between LVMI and SDS values (R: .67; P < .001). After a median follow-up of 84 ± 47 months, 27 adverse events were recorded, including 19 AV replacements and 8 deaths. On multivariable analysis, the presence of LVH (hazard ratio [HR]: 6.46; 95% confidence interval [CI]: 2.09-20.00; P = .001) and a higher SDS (HR: 1.41; 95% CI: 1.15-1.75; P = .001) were the two independent predictors of AE., Conclusions: In patients with mild-to-moderate AVS, myocardial ischemia correlates with the severity of adverse LV remodeling. Patients with LVH and ischemia are at increased risk of AE., (Copyright © 2024 American Society of Nuclear Cardiology. Published by Elsevier Inc. All rights reserved.)- Published
- 2024
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