Native valve Neisseria meningitidis endocarditis with embolic infarcts

Area of Science:

• Infectious Diseases
• Cardiology
• Microbiology

Background:

• Infective endocarditis is a serious infection, typically caused by bacteria like Staphylococcus or Streptococcus.
• Neisseria meningitidis (NM) is primarily known for causing meningitis, a severe infection of the brain and spinal cord lining.

Observation:

• A rare case of native mitral valve endocarditis caused by Neisseria meningitidis (NM) in a 61-year-old female patient is presented.
• The patient did not exhibit any signs or symptoms of meningitis, underscoring a less common presentation of invasive meningococcal disease.

Findings:

• This case highlights that Neisseria meningitidis (NM) should be considered in the differential diagnosis of infective endocarditis, particularly in specific high-risk populations.
• Despite a decrease in NM endocarditis with antibiotic availability, vigilance is crucial for individuals with risk factors such as diabetes, polysubstance abuse, and advanced age.

Implications:

• Early and appropriate antibiotic therapy, potentially combined with surgical intervention, is associated with a favorable prognosis for NM endocarditis.
• Clinicians should maintain a broad differential diagnosis for endocarditis, including less common pathogens like NM, especially in at-risk patient groups.