在有机 mitrale 吐中 B 型 natriuretic :决定因素和对结果的影响
Delphine Detaint1, David Messika-Zeitoun, Jean-François Avierinos
1Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minn 55905, USA.
Circulation
|May 11, 2005
概括
在有机腹吐 (MR) 中的B型尿素 (BNP) 水平反映了心脏损伤,而不是MR的严重程度. 较高的BNP预测MR患者的结果更差,有助于风险评估.
科学领域:
- 心脏病学 心脏病学
- 生物标志物 生物标志物
- 这是心脏衰竭.
背景情况:
- B型尿素 (BNP) 激活是各种心脏病中不良结果的已知预测因素.
- 然而,BNP在有机 mitra regurgitation (MR) 中的特定决定因素和预后价值在很大程度上是未知的.
研究的目的:
- 研究影响慢性有机MR患者BNP水平的因素.
- 评估BNP在预测该患者群体中不良结果的预后意义.
主要方法:
- 预计将招募124名慢性有机MR患者.
- 测量BNP水平,MR严重程度,左心室 (LV) 重塑和左心房 (LA) 体积.
- 长期结果分析,包括生存率和死亡和心力衰竭的结合终点.
主要成果:
- 独立的BNP决定因素包括年龄,性别,LV末缩体积指数,LA体积,心房动和症状;MR程度不是一个独立的因素.
- 患有较高BNP水平 (≥31 pg/mL) 的患者在5年后的生存率显著降低,死亡率或心力衰竭率更高.
- 独立预测死亡率和死亡或心力衰竭的结合终点,即使经过对临床和心声学因素的调整.
结论:
- 有机MR中的BNP激活主要反映了心室和心房的后果,而不是MR本身的程度.
- 有机MR患者的BNP水平升高是保守管理下不良临床事件的独立预测指标.
- 在评估MR后果的严重程度和预测不良结果方面,BNP作为一种有价值的生物标志物,支持其在临床评估和风险分层中的使用.
相关概念视频
01:27Mitral Valve Prolapse I: Introduction
1.1K
IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
1.1K
01:20Mitral Regurgitation I: Introduction
1.3K
Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
1.3K
01:25Mitral Regurgitation III: Medical Management
686
Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...
686
01:28Mitral Regurgitation IV: Nursing Management
602
Mitral regurgitation (MR) is a condition where the mitral valve does not close properly, leading to the backward flow of blood from the left ventricle into the left atrium during systole. This condition can arise from various causes, including rheumatic fever, infective endocarditis, or degenerative valve disease. Effective nursing management is crucial to optimizing patient outcomes and involves comprehensive assessment and targeted interventions.Comprehensive Patient AssessmentA detailed...
602
01:23Mitral Stenosis II: Clinical features and Diagnostic Tests
557
Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
557
01:26Mitral Stenosis III: Medical Management
535
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
535