Related Experiment Video
Updated: Jul 29, 2026

11:04
Isolation of Valvular Endothelial Cells
Published on: December 29, 2010
Prosthetic valve endocarditis caused by Veillonella parvula
T W Boo1, B Cryan, A O'Donnell
1Department of Microbiology, University Hospital, Wilton Road, Cork, Ireland. twboo@eircom.net
The Journal of Infection
|December 18, 2004
Summary
Veillonella parvula prosthetic valve endocarditis is rare but serious. This case highlights cardiac failure, cerebral embolism, and successful treatment with valve replacement and metronidazole.
Area of Science:
- Infectious Diseases
- Cardiology
- Microbiology
Background:
- Veillonella species are anaerobic Gram-negative cocci, rarely implicated in infective endocarditis.
- Prosthetic valve endocarditis (PVE) poses significant management challenges, often requiring surgical intervention.
Observation:
- A 49-year-old male presented with acute cardiac failure secondary to prosthetic valve dehiscence.
- The patient experienced neurological complications, including cortical blindness and limb paresis, attributed to cerebral embolism.
Findings:
- The causative agent was identified as Veillonella parvula, a rare pathogen in endocarditis.
- Successful management involved urgent prosthetic valve replacement surgery.
- A prolonged course of metronidazole was administered for antimicrobial therapy.
Implications:
- This case underscores the importance of considering rare pathogens like Veillonella in PVE.
- Prompt surgical intervention and appropriate antibiotic selection are crucial for favorable outcomes in complex endocarditis cases.
- Cerebral embolism is a significant complication of PVE, necessitating vigilant neurological monitoring.
Related Concept Videos
Heart Valves
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Mitral Valve Prolapse I: Introduction
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...
Endocarditis I: Introduction
Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
Endocarditis II: Clinical Features of Infective Endocarditis
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...
Endocarditis III: Medical Management
Infective endocarditis management involves a multifaceted approach encompassing infection prevention, lifestyle modifications, pharmacological therapy, and surgical management.Infection Prevention:Hand Hygiene: Thorough handwashing is crucial to prevent the spread of infection. Hand hygiene should be performed regularly, especially before and after using the restroom.Oral Hygiene: Good oral hygiene is essential. It includes brushing teeth immediately after waking up and before bed, flossing...
Endocarditis IV: Nursing Management
Infective endocarditis (IE) is a chronic infection of the heart's endocardium, primarily affecting the heart valves. A detailed nursing assessment for a patient with IE involves collecting subjective and objective data to ensure an accurate diagnosis and timely intervention.Subjective DataThe nurse gathers information about the patient's symptoms and complaints during the subjective assessment. Patients with infective endocarditis often report non-specific symptoms that can mimic other...

