Asymptomatic left ventricular diastolic dysfunction (ALVDD) (diastolic abnormalities and normal ejection fraction in the absence of symptoms) is associated with incident heart failure (HF) and decreased survival. Abnormalities of diastolic function might therefore be included in the definition of stage B HF, which denotes individuals at risk for the development of HF. Imaging techniques, especially echocardiography, are necessary for the recognition of preclinical left ventricular (LV) diastolic disturbances, as well as further tracking of pathological changes and responses to treatment. The transition of ALVDD to symptomatic HF is underlain by multiple factors, including both cardiovascular and noncardiovascular determinants. The initiation of management strategies targeting cardiovascular and systemic comorbidities in patients identified as having ALVDD may delay symptomatic progression and improve prognosis.

中文翻译：

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无症状左心室舒张功能障碍：预测有症状心力衰竭的进展。

无症状的左心室舒张功能障碍（ALVDD）（在没有症状的情况下舒张异常和正常射血分数）与事件性心力衰竭（HF）和存活率降低相关。因此，B期HF的定义中可能包括舒张功能异常，这表示个体有发生HF的危险。成像技术，尤其是超声心动图，对于识别临床前左心室（LV）舒张功能障碍以及进一步追踪病理变化和对治疗的反应是必不可少的。ALVDD向有症状的HF的过渡受多种因素的影响，包括心血管和非心血管决定因素。