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The detection of myocardial viability and its clinical implications
Prem Soman1, Vahini Naidoo, Avijit Lahiri
1Department of Internal Medicine, Lehigh Valley Hospital, Penn State University, Allentown, PA, USA.
Insights
Congestive heart failure (CHF) poses a significant health and economic burden. Recent advancements clarify its complex pathophysiology, revealing heterogeneous myocardial dysfunction and guiding tailored therapeutic strategies for improved outcomes.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Congestive heart failure (CHF) presents substantial mortality, morbidity, and economic challenges, comparable to major cancers.
- Historically, CHF was often viewed as irreversible and managed palliatively due to poorly understood pathophysiology and syndrome heterogeneity.
Purpose of the Study:
- To review the pathophysiology of congestive heart failure (CHF).
- To discuss diagnostic and therapeutic implications of reversible ischemic left ventricular dysfunction.
Main Methods:
- Review of current understanding of myocardial dysfunction in heart failure.
- Analysis of diagnostic criteria and therapeutic approaches for different types of myocardial dysfunction.
Main Results:
- Myocardial dysfunction in CHF is heterogeneous, including necrotic, stunned, hibernating, and myopathic myocardium.
- Therapeutic objectives differ for each type of dysfunctional myocardium, necessitating individualized treatment.
Conclusions:
- Improved understanding of CHF pathophysiology has shifted treatment paradigms.
- Recognizing and addressing the heterogeneity of myocardial dysfunction is crucial for effective CHF management.
Abstract:
The mortality, morbidity and economic burden imposed by congestive heart failure are considerable. Despite a prevalence and prognosis comparable to the more commonly encountered cancers like breast and lung cancer, there has been relatively less emphasis in the western world on the screening, diagnosis and treatment of heart failure, at least until recently. This may be partly attributed to the fact that the complex pathophysiology of heart failure was ill understood and the heterogeneity of the syndrome not recognised, so that even among specialist cardiologists it was considered pretty much an irreversible condition amenable only to palliative therapy. However, our understanding of heart failure has grown significantly in the past decade. From the early days when all dysfunctional myocardium was considered necrosed, and revascularisation often dismissed on this basis, we have now progressed to the understanding that dysfunctional myocardium is a heterogeneous entity comprising necrotic, stunned, hibernating and myopathic myocardium, and that the therapeutic objectives in each of these categories is specific and should be addressed individually. In this article we briefly review the pathophysiology, and diagnostic and therapeutic implications of reversible ischaemic left ventricular dysfunction.