由HeartMate 3介导的心脏逆转重塑左心室辅助设备:与旧一代设备的比较
Michael Yaoyao Yin1, Eleni Maneta1, Christos P Kyriakopoulos1
1From the Utah Cardiac Recovery (UCAR) Program (Divisions of Cardiology and Cardiothoracic Surgery at University of Utah Health & School of Medicine, Intermountain Medical Center, and George E. Wahlen Department of Veterans Affairs Medical Center), Salt Lake City, Utah.
概括
该HeartMate 3 (HM3) 左心室辅助器件 (LVAD) 显示类似的心脏逆向重塑与较旧的连续流动LVADs. 这表明,完全磁悬浮的HM3是研究和促进心力衰竭患者逆转重塑的有效平台.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 医疗器械 医疗器械
背景情况:
- 心脏Mate 3 (HM3) 是目前唯一可用于高级心力衰竭 (HF) 的完全磁悬浮左心室辅助装置 (LVAD).
- 在使用HM3.3进行机械卸载后,对左心室 (LV) 的功能和结构变化存在有限的数据.
- 了解反向重塑对于优化晚期高血压患者的治疗结果至关重要.
研究的目的:
- 为了比较由HM3诱导的心脏逆向重塑与老一代连续流动LVADs.
- 评估HM3植入后LV的功能和结构变化.
- 为了确定HM3技术是否能促进心脏逆向重塑.
主要方法:
- 对405名获得LVAD支持的慢性HF患者 (HVAD,HM3或HM2) 的回顾性分析.
- 植入前和植入后1,3,6和12个月收集心声图.
- 心脏逆向重塑是由改善的LV喷射率 (LVEF) 和减少LV内部透气直径 (LVIDd) 定义的.
主要成果:
- 两种设备之间没有观察到植入后连续LV射出分数 (LVEF) 的显著差异.
- 与HVAD和HM3相比,HeartMate II (HM2) 在3个月和6个月后显示了显着较低的植入后LV内部透气直径 (LVIDd).
- 心脏逆转型重塑反应者的总比率为11.9%,在所有LVAD组中都是相似的.
结论:
- 完全磁悬浮的HeartMate 3 (HM3) LVAD表现出与较旧的连续流动LVAD相匹配的心脏逆向重塑.
- HM3技术为研究和促进晚期心力衰竭中心脏逆向重塑提供了一个可行的平台.
- 进一步的研究可以利用HM3的能力来增强反向重塑策略.
相关概念视频
Cardiomyopathy III: Hypertrophic Cardiomyopathy
321
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
321
Cardiomyopathy V: Interprofessional Care
274
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...
274
Cardiomyopathy II: Dilated Cardiomyopathy
400
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,...
400
Mitral Regurgitation III: Medical Management
224
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...
224


