通过心房通气管替换心肌的缩前部运动导致左心室外流通道阻塞
Jonathan Afoke1, Juan Crestanello1
1Department of Cardiovascular Surgery, Mayo Clinic, Rochester, MN, USA.
Perfusion
|October 12, 2023
概括
跨心腔透气管中枢替换很少会导致门假体的缩前部运动,导致左心室外流通道阻塞. 这一案例突出了这种罕见并发症的潜在风险和诱导因素.
科学领域:
- 心血管外科心血管外科
- 干预心脏病学 干预心脏病学
- 生物医学工程 生物医学工程
背景情况:
- 跨心腔透气管中枢置换 (TAMVR) 是一种用于严重中枢环状化 (MAC) 的混合方法.
- 它涉及到心肺旁路和直接植入一个跨导管到一个化的 mitra annulus.
- 这种技术旨在解决高风险患者中复杂的额头膜疾病.
研究的目的:
- 报告一种罕见的左心室外流通道阻塞病例,该病例是由透气管心脏门假体的缩前部运动引起的.
- 为了描述这种现象在过心膜 mitra 置换 (TAMVR) 后的首次发生.
- 在TAMVR的背景下讨论SAM诱导的LVOT阻塞的潜在诱导风险因素.
主要方法:
- 这项研究涉及一名患者,该患者因严重的中耳环结石化而接受过心腔中耳置换.
- 通过跨心腔方法植入了一种穿过导管的心脏门假体.
- 在手术后,患者出现了归因于左心室外流通道阻塞的症状.
主要成果:
- 鉴定出一种罕见的综合症,即植入过导管 mitra 门假肢传单的缩前部运动.
- 这种SAM导致左心室外流通道出现显著阻塞.
- 据信,这位患者的表现是首次报告LVOT阻塞的病例,该病例是在过心膜 mitra 置换手术后出现的.
结论:
- 透气管 mitra 假肢的缩前部运动可能发生在 transatrial 转心膜替换后,导致 LVOT 阻塞.
- 识别和理解易感因素对于管理这种罕见但严重的并发症至关重要.
- 需要进一步研究以阐明TAMVR后SAM的机制和完善管理策略.
相关概念视频
01:22Mitral Stenosis I: Introduction
15
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
15
01:27Mitral Valve Prolapse I: Introduction
21
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...
21
01:20Mitral Regurgitation I: Introduction
15
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...
15
01:22Mitral Valve Prolapse II: Assessment and Management
20
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
20
01:23Mitral Stenosis II: Clinical features and Diagnostic Tests
22
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...
22
01:26Mitral Stenosis III: Medical Management
12
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...
12