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===Laboratory Tests===
===Laboratory Tests===
Pro-brain natriuretic peptide ('''NT-proBNP''') concentration is associated with severity of DMVD. Elevated NT-proBNP levels are useful in discriminating patients with respiratory distress caused by heart failure from those with primary respiratory tract disease.
Pro-brain natriuretic peptide ('''NT-proBNP''') concentration is associated with severity of DMVD. Elevated NT-proBNP levels are useful in discriminating patients with respiratory distress caused by heart failure from those with primary respiratory tract disease.
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==Staging==
== Treatment ==
== Treatment ==