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  • Title: [Heart failure with conserved systolic function. Therapeutic potential with beta blocking agents].
    Author: Faggiano P, Rusconi C.
    Journal: Ital Heart J Suppl; 2000 Aug; 1(8):1019-26. PubMed ID: 10993008.
    Abstract:
    It is increasingly recognized that the syndrome of congestive heart failure may occur in the absence of any abnormality of left ventricular systolic function. In this situation, the clinical picture of heart failure, particularly the presence of symptoms and/or signs of pulmonary congestion, is usually considered a consequence of an abnormal diastolic function of the left ventricle (diastolic heart failure). However, in the individual patient, several other potential causes should be taken into account before attributing to an isolated diastolic dysfunction of the left ventricle the pathogenetic role of clinical presentation. In fact, due to the current lack of validated criteria for diagnosis of diastolic heart failure, it still represents an exclusion diagnosis in the clinical setting. Prevalence of heart failure with preserved left ventricular systolic function is widely variable among the different studies, from 13% to over 70%, with most reports showing a prevalence of 30-40%. These differences depend on several factors, such as the criteria used for diagnosis of heart failure, as well as those used for recognizing a normal systolic function or the clinical setting considered (for example hospital versus community). According to an analysis of the studies published, heart failure with preserved left ventricular systolic function seems to be more common in the female sex and in elderly patients, and it is associated with hypertension and electrocardiographic or echocardiographic evidence of left ventricular hypertrophy. Atrial fibrillation, either paroxysmal or chronic, is common and may represent a precipitating factor of clinical deterioration. According to most studies, patients with preserved left ventricular systolic function show, compared to patients with reduced left ventricular systolic function, a better prognosis, as indicated by a lower mortality and hospital readmission rates. Regarding the therapy of these patients, it is known that there are virtually no well-controlled studies of the effect of pharmacological treatment on outcome. Accordingly, the therapeutic approach of heart failure with preserved systolic function is currently based on a careful pathophysiological interpretation of clinical picture in the individual patient.
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