1. Diagnostic and prognostic value of the left atrial myopathy evaluation in cardiac amyloidosis using echocardiography
- Author
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Aaisha Ferkh, Paul Geenty, Luke Stefani, Peter Emerson, Jennifer Pham, Karen Byth, Anita C. Boyd, David Richards, Mark S. Taylor, Fiona Kwok, Eddy Kizana, and Liza Thomas
- Subjects
cardiac amyloidosis ,echocardiography ,left atrial mechanical dispersion ,left atrial myopathy ,strain imaging ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Cardiac amyloidosis (CA) is an under‐recognized cause of heart failure. Left atrial (LA) myopathy contributes to a worse prognosis in heart failure and is a feature of transthyretin (ATTR) and light‐chain (AL) CA. LA mechanical dispersion (LA‐MD) is a novel marker of intra‐atrial dyssynchrony implicated in LA myopathy and the future development of atrial fibrillation (AF). Aims This study aimed to determine the characteristics and prognostic value of LA myopathy in ATTR and AL cardiomyopathy through a comprehensive LA echocardiographic evaluation. Methods ATTR (n = 86) and AL (n = 86) CA patients were compared with hypertensive heart disease (HHT) patients (n = 58). Transthoracic echocardiographic measurements including LA strain and LA‐MD were obtained with patient follow‐up for mortality. Results ATTR and AL patients had a median follow‐up of 66 months, with 26 mortality events. Left ventricular (LV) mass, diastolic function (average‐e′ and E/e′), LV global longitudinal strain, and LA volume and function (LA function index and strain) were more impaired in ATTR versus AL; these echocardiographic parameters were more impaired in both amyloid groups compared to HHT patients (P
- Published
- 2024
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