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Pacemaker infection and endocarditis due to Parvimonas micra: A case report and systematic review
Takahiro Suzuki1, Kazuhiro Ishikawa2, Takahiro Matsuo2
1Department of Cardiovascular Medicine, St. Luke's International Hospital, 9-1 Akashicho, Chuoku, Tokyo, 104-0044, Japan.
Abstract:
Infective endocarditis caused by Parvimonas micra is rare. Its clinical features are presented in this systematic review. We also describe the case of an 82-year-old man with infective endocarditis and pacemaker infection due to P. micra. There are some reports of recurrence during antimicrobial therapy; hence, careful follow-up is necessary.
Insights
Infective endocarditis caused by Parvimonas micra is rare. This systematic review details its clinical features and highlights the need for vigilant patient monitoring due to potential recurrence.
Area of Science:
- Infectious Diseases
- Cardiology
- Microbiology
Background:
- Infective endocarditis (IE) is a serious infection of the heart's inner lining.
- Parvimonas micra is a gram-negative anaerobic coccus, rarely implicated in IE.
- Systematic reviews are crucial for understanding rare clinical presentations.
Observation:
- This study presents a systematic review of clinical features of IE caused by Parvimonas micra.
- A case of an 82-year-old male with P. micra infective endocarditis and pacemaker infection is described.
- Recurrence of P. micra IE during antimicrobial therapy has been reported.
Findings:
- Parvimonas micra is an uncommon but significant pathogen in infective endocarditis.
- Clinical presentation of P. micra IE may not differ substantially from other causes of endocarditis.
- The risk of recurrence necessitates thorough and prolonged patient follow-up.
Implications:
- Enhanced awareness of P. micra as a causative agent for IE is needed among clinicians.
- Diagnostic and therapeutic strategies for P. micra IE require careful consideration.
- Long-term monitoring protocols are essential for patients treated for P. micra endocarditis to detect relapses.

