Related Experiment Video
Updated: Jan 21, 2026
09:13
Optimized Protocol for the Extraction of Proteins from the Human Mitral Valve
Published on: June 14, 2017
13.3K
Mitral stenosis produced by infective endocarditis involving a previously anatomically normal valve
Charles S Roberts1, Gregory P Milligan2, Robert C Stoler2
1Department of Cardiac Surgery, Baylor University Medical Center and the Baylor Scott & White Heart and Vascular HospitalDallasTexas.
Proceedings (Baylor University. Medical Center)
|August 7, 2019
Summary
A rare case of severe mitral stenosis resulted from methicillin-sensitive Staphylococcus aureus endocarditis on a normal mitral valve. This presentation of infective endocarditis causing significant valve stenosis is extremely uncommon.
Area of Science:
- Cardiology
- Infectious Diseases
- Valvular Heart Disease
Background:
- Infective endocarditis typically affects individuals with pre-existing valve abnormalities.
- Methicillin-sensitive Staphylococcus aureus (MSSA) is a common cause of endocarditis, but usually without severe valvular stenosis.
Observation:
- A 63-year-old male presented with symptoms attributed to a cardiac issue.
- Diagnostic evaluation revealed large vegetations on the mitral valve.
Findings:
- The patient was diagnosed with methicillin-sensitive Staphylococcus aureus endocarditis.
- The mitral valve vegetations were of a size that caused severe mitral stenosis.
- This etiology of valve stenosis, solely due to infective endocarditis on a normal valve, is exceptionally rare.
Implications:
- Highlights the potential for severe valvular dysfunction in infective endocarditis, even on previously normal valves.
- Underscores the importance of considering uncommon presentations of Staphylococcus aureus endocarditis.
- Suggests the need for vigilant monitoring and prompt intervention in cases of infective endocarditis to prevent irreversible valvular damage.
Related Concept Videos
01:22Mitral Stenosis I: Introduction
507
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...
507
01:25Endocarditis II: Clinical Features of Infective Endocarditis
439
Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
439
01:27Mitral Valve Prolapse I: Introduction
408
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...
408
01:27Mitral Stenosis IV: Nursing Management
251
A comprehensive nursing assessment is essential for patients with valvular heart disease, which involves any dysfunction of the heart valves that could impact blood flow and overall heart function.Subjective Data Collection:Chief Complaint and Present Illness: Start with the patient's primary concerns, focusing on the onset, duration, and progression of cardiac symptoms such as dyspnea, fatigue, chest pain, and palpitations.Past Medical History: Collect detailed information on any previous...
251
01:26Mitral Stenosis III: Medical Management
253
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...
253
01:22Mitral Valve Prolapse II: Assessment and Management
458
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...
458