Infective endocarditis by a rare and fastidious agent: Abiotrophia defectiva
Ana Margarida Mosca1, Fenando Mané2, Carla Marques Pires2
1Internal Medicine, Hospital de Braga, Braga, Portugal ana_mosca6@hotmail.com.
BMJ Case Reports
|June 22, 2021
Summary
Abiotrophia defectiva endocarditis, a rare condition affecting heart valves, can be challenging to diagnose due to difficult culture requirements. Prompt suspicion and treatment are crucial for patient recovery.
Area of Science:
- Infectious Diseases
- Cardiology
- Microbiology
Background:
- Abiotrophia defectiva is a nutritional variant streptococcus.
- It has an affinity for endovascular structures.
- It cannot be cultured on non-supplemented media, delaying diagnosis.
Related Concept Videos
Endocarditis I: Introduction
105
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...
105
Endocarditis II: Clinical Features of Infective Endocarditis
72
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...
72
Endocarditis III: Medical Management
71
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...
71
Rheumatic Heart Disease I: Introduction
143
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
143
Endocarditis IV: Nursing Management
111
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...
111
Myocarditis I: Introduction
115
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
115


