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Updated: Jul 20, 2026
An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
Published on: May 19, 2020
Abstract:
Mitral valve prolapse is a condition that is being recognized with increased frequency. It is not known whether its incidence is increasing, or whether we are better able to diagnose it today. In the idiopathic or familial variety, the mitral valve pathology is almost always that of myxomatous degeneration. Some authors have suggested the presence of a cardiomyopathy because of significant left ventricular dysfunction in many cases. Idiopathic prolapse occurs predominantly in females, often at a young age, and may be associated with chest pain, dyspnea, fatigue, presyncope, syncope, and/or sudden death. The clinical findings are variable and typically consist of a nonejection click and/or late systolic murmur, heard best at the cardiac apex. Diagnosis can be confirmed by echocardiography and/or ventricular cineangiography, the latter permitting accurate recognition of the anatomy of the prolapsed leaflets. The complications of infective endocarditis, severe mitral insufficiency, and life-threatening ventricular arrhythmias represent the major problems of management. It is important to distinguish the idiopathic form of mitral valve prolapse from that due to coronary artery disease and to realize that mitral valve prolapse may occur in Marfan's syndrome, Turner's syndrome, or in association with secundum atrial septal defect or ruptured chordae tendineae. Typical clicks and/or murmurs have also been described in patients with a history of rheumatic fever and in hypertrophic cardiomyopathy. Although much descriptive knowledge has accumulated over the past 15 years, many unanswered questions remain regarding the idiopathic type of prolapse. What is the nature and cause(s) of myxomatous degeneration? What is the relation of the valve pathology to the left ventricular dysfunction? What is the relation of both of these factors to disabling chest pain, electrocardiographic changes, and life-threatening arrhythmias? Hopefully, answers to these and other important questions regarding mitral valve prolapse will be forthcoming.
Insights
Mitral valve prolapse (MVP) is increasingly recognized, often linked to myxomatous degeneration and potential left ventricular dysfunction. Further research is needed to understand its causes and relationship to symptoms and arrhythmias.
Area of Science:
- Cardiology
- Valvular Heart Disease
- Genetics
Background:
- Mitral valve prolapse (MVP) is a condition of increasing recognition, characterized by myxomatous degeneration of the mitral valve leaflets.
- Idiopathic MVP predominantly affects young females and can be associated with symptoms like chest pain, dyspnea, fatigue, and syncope.
- Left ventricular dysfunction is noted in some MVP cases, prompting consideration of associated cardiomyopathy.
Purpose of the Study:
- To review the current understanding of mitral valve prolapse (MVP), focusing on its idiopathic form.
- To highlight diagnostic methods, clinical presentations, and potential complications of MVP.
- To identify unanswered questions regarding the etiology and pathophysiology of idiopathic MVP.
Main Methods:
- Review of clinical findings, including characteristic nonejection clicks and late systolic murmurs.
- Diagnostic confirmation via echocardiography and ventricular cineangiography.
- Differential diagnosis considering MVP associated with other conditions like Marfan syndrome and hypertrophic cardiomyopathy.
Main Results:
- MVP diagnosis is supported by characteristic physical exam findings and confirmed with imaging.
- Complications include infective endocarditis, mitral insufficiency, and ventricular arrhythmias.
- Distinguishing idiopathic MVP from secondary causes is crucial for management.
Conclusions:
- While descriptive knowledge of MVP has advanced, the nature of myxomatous degeneration and its link to ventricular dysfunction and symptoms remain unclear.
- Further research is essential to address the etiology, pathophysiology, and optimal management of idiopathic mitral valve prolapse.
- Understanding the relationship between valve pathology, left ventricular function, and clinical manifestations is critical.
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