冠状动脉微血管功能障碍和扩大心肌病谱中的不良结果
Hisanori Kosuge1, Masatake Kobayashi1, Shoko Hachiya1
1Department of Cardiology, Tokyo Medical University.
International heart journal
|March 30, 2025
概括
低动力非扩张性心肌病 (HNDC) 患者的预后比扩张性心肌病 (DCM) 患者更好. 左心室扩张是HNDC和DCM中不良事件的关键预测因素.
科学领域:
- 心脏病学 心脏病学
- 心血管成像 - 心血管成像
- 心脏衰竭研究研究
背景情况:
- 低动力非扩张性心肌病 (HNDC) 是扩张性心肌病 (DCM) 的临床前阶段,其特征是没有扩张的左心室 (LV) 功能障碍.
- 心肌纤维化和DCM中的微血管功能障碍与不良结果有关,但它们在HNDC中的作用尚不清楚.
研究的目的:
- 为了比较DCM和HNDC患者的临床特征和预后.
- 在这些患者群体中调查LV终端-透气直径指数 (LVEDDI) 和不良临床结果之间的关联.
主要方法:
- 100名接受心脏磁共振 (CMR) 的患者 (64名DCM,36名HNDC) 的回顾性分析.
- 基于LVEDDI的DCM和HNDC的分类.
- 评估冠状动脉流量储备 (CFR) 使用相对照影像成像在患者和对照组的一个子集.
主要成果:
- 在随访期间,与HNDC患者相比,DCM患者表现出明显更高的不良结果风险 (全因死亡率,心力衰竭住院,心室节律失常).
- 升高的LVEDDI是不良事件的独立预测因素,即使经过对临床共变量进行调整.
- 在HNDC中冠状动脉流量储备 (CFR) 与对照相比,与DCM相比明显高.
结论:
- 左心室扩张是DCM和HNDC中不良事件的独立预测因素.
- 与DCM患者相比,HNDC患者的预后更为有利.
- 进一步研究HNDC中微血管功能障碍的机制是有必要的.
相关概念视频
Imbalances in Cardiac Output
3.3K
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
3.3K
Myocarditis I: Introduction
645
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
645
Cardiomyopathy I: Introduction and Classification
826
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
826
Cardiomyopathy II: Dilated Cardiomyopathy
790
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
790
Cardiomyopathy IV: Restrictive Cardiomyopathy
952
Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
952
Cardiomyopathy V: Interprofessional Care
753
Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
753


