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Abstract
Heart failure is a major clinical problem affecting 64 million people worldwide with a 5-year mortality rate of around 50%. Patients present to the emergency department with inability to breathe properly. Heart failure is an important condition not to be missed as accurate and early diagnosis or exclusion is crucial for timely intervention. Conventionally heart failure was regarded as congestion consequent to fluid accumulation. Currently heart failure is viewed as a complex heterogeneous entity encompassing severity (clinical versus sub-clinical), onset (acute versus chronic), vascular compartment involved (intra- versus extra-vascular), besides fluid accumulation (cardiopulmonary versus generalized). There is a myriad of biomarkers that reflect different parts of heart failure pathophysiology. However, only natriuretic peptides remain as the “gold standard” against which other biomarkers are compared. This review provides a current update on the utility of natriuretic peptides in clinical practice. We will provide a brief overview of natriuretic peptides, the assays, their clinical use in heart failure, some caveats for their use (age, chronic kidney disease, obesity, heart failure with preserved ejection fraction) and highlight some emerging applications.
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