脑钠肽和N端脑钠肽前体
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为何检测?
有助于诊断心力衰竭及评估其严重性。
何时检测?
当有心力衰竭的症状,如呼吸急促、疲劳或者正在接受心力衰竭治疗时。
何种样本?
采自肘静脉的血液样本。
是否需要作试验前准备?
不需要。
检测样本
检测什么?
这些检查可检测血中脑利钠肽(BNP)或前脑钠肽(NT-proBNP)的浓度。正常情况下,心脏可产生少量的前体蛋白pro-BNP,经过裂解可释放活性激素BNP和一个无活性片段NT-proBNP。BNP有助于调节血容量,帮助心脏将血液泵到全身。BNP和NT-proBNP主要由左心室(主要的泵血腔)产生,当左心室松弛,不得不更用力的泵血时,血中的BNP和NT-proBNP便显著增加。这种情况可发生在心力衰竭以及影响心脏和血液循环系统的其他疾病中。
测试样本如何采集?
自肘静脉采集血液样本。
是否需要进行任何试验前准备以保证样本的质量?
不需要任何试验前准备。
试验
常见问题
询问检验医学专家
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参考文献
注意:本文是在此处引用的参考文献和医学检验项目在线介绍编辑审核委员会全体成员的经验和研究结果的基础上总结而成。本文由编辑委员会定期审核、更新。任何新引用的文献都会添加到列表中,并且会与原有的参考文献区分开。
Sources Used in Current Review
Tietz Textbook of Clinical Chemistry and Molecular Diagnostics. Burtis CA, Ashwood ER, Bruns DE, eds. St. Louis: Elsevier Saunders; 2006 pp. 1630-1631.
Clarke, W. and Dufour, D. R., Editors (2006). Contemporary Practice in Clinical Chemistry. AACC Press, Washington, DC; p. 264.
deFilippi C. Natriuretic Peptides for Diagnosing Heart Failure and Beyond: What We Know in 2007. (May 24, 2007) Medscape Today. Available online at http://www.medscape.com/viewarticle/557030 through http://www.medscape.com. Accessed September 2008.
Maher KO et al. B-type natriuretic peptide in the emergency diagnosis of critical heart disease in children. Pediatrics 2008 Jun; 121:e1484. Available online at http://pediatrics.aappublications.org/cgi/content/full/121/6/e1484?linkType=FULL&journalCode=pediatrics&resid=121/6/e1484 through http://pediatrics.aappublications.org. Accessed September 2008.
Sources Used in Previous Reviews
Interview with Alan H.B. Wu, PhD. Director, Clinical Chemistry, Hartford Hospital, Hartford, CT.
"First Blood Test for Congestive Heart Failure Wins FDA Clearance." Clinical Laboratory Strategies, December 2000, Vol. 5, No. 12, p.1.
Thomas, Clayton L., Editor (1997). Taber’s Cyclopedic Medical Dictionary. F.A. Davis Company, Philadelphia, PA [18th Edition].
Pagana, Kathleen D. & Pagana, Timothy J. (2001). Mosby’s Diagnostic and Laboratory Test Reference 5th Edition: Mosby, Inc., Saint Louis, MO.
Tang, W. (2004 February 27). NACB: Recommendations for the use of Cardiac Biomarkers in Heart Failure. NACB: Recommendations for the use of Cardiac Biomarkers in Heart Failure – Chapter 2 [Draft Guidelines]. Available online at http://www.nacb.org/lmpg/biomark/card_biomarkers_chp2.doc through http://www.nacb.org.
Bay, M. et. al. (2003). NT-proBNP: a new diagnostic screening tool to differentiate between patients with normal and reduced left ventricular systolic function. Heart ONLINE Heart 2003;89:150-154 [On-line journal]. Available online at http://heart.bmjjournals.com/cgi/content/full/89/2/150 through http://heart.bmjjournals.com.
Diagnostic Products Corporation Acquires Nonexclusive Rights to a Key Cardiac Marker, NT-proBNP, from Roche Diagnostics—Agreement widens access to unique marker for heart failure and allows for better/earlier/improved therapy. (2004 February 11) DPC [On-line press release]. Available online at http://www.dpcweb.com/newsreleases/2004/february/ntprobnp.htm through http://www.dpcweb.com.
Roche Receives FDA Clearance for Elecsys proBNP Assay – First Automated Blood Test to Aid in the Diagnosis of Congestive Heart Failure (2002). Roche Diagnostics [On-line press release]. Available online at http://www.roche-diagnostics.com/press_lounge/press_releases/archive/2002_11_20.html through http://www.roche-diagnostics.com





















