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There is no level of BNP that perfectly separates patients with and without heart failure. [14]In screening for congenital heart disease in pediatric patients, an NT-proBNP cut-off value of 91 pg/mL could differentiate an acyanotic heart disease (ACNHD) patient from a healthy patient with a sensitivity of 84% and specificity of 42%. [15]
The main clinical utility of either BNP or NT-proBNP is that a normal level helps to rule out chronic heart failure in the emergency setting. An elevated BNP or NT-proBNP should never be used exclusively to "rule in" acute or chronic heart failure in the emergency setting due to lack of specificity [dubious – discuss]. [19]
B-type natriuretic peptide (BNP) and its pro hormone NT-proBNP are especially useful in diagnosing heart failure, as their levels in the blood increase along with the severity of the condition. [3] Rapid testing of BNP and NT-proBNP can also help distinguish between shortness of breath due to heart and lung-related causes.
The biological half-life of BNP, however, is twice as long as that of ANP, and that of NT-proBNP is even longer, making these peptides better choices than ANP for diagnostic blood testing. In addition to the mammalian natriuretic peptides (ANP, BNP , CNP ), other natriuretic peptides with similar structure and properties have been isolated ...
This also applies to patients with elevated NT-proBNP levels and patients with atrial enlargement in cardiac ultrasound. Other causes: Arterial dissections, infection-related vasculopathies (esp. Varicella zoster virus), thrombophilia, cancer-related thrombosis, migraine, Fabry disease and other genetic, autoimmune or rheumatic causes.
For light-chain amyloidosis, the use of FLC assays and NT-proBNP levels can be used to monitor the progression of amyloidosis and any response to treatments. [1] One of the major routes to decrease the production of these excess light chains is to kill the abnormal cells that are producing them. [5]
More specifically, AL amyloidosis can be classified as stage I, II or III based on cardiac biomarkers like Nt-proBNP and cardiac troponin. [45] Survival diminishes with increasing stage, but recent advancements in treatments have improved median survival rates for stages I, II, and III, to 91.2, 60, and 7 months respectively. [45]
Cardiac biomarkers troponin and N-terminal (NT)-prohormone BNP were seen elevated. Similarly, the level of inflammation-related markers such as C-reactive protein (CRP), D-dimer, IL-6, procalcitonin was significantly increased, indicating an inflammatory process in the body.