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Published on: January 7, 2019
Isolated pulmonic valve infective endocarditis: a persistent challenge
1Infectious Disease Section, Medical and Research Services, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, 10701 East Blvd., Cleveland, Ohio 44106, USA.
Abstract:
Isolated pulmonic valve infective endocarditis is an uncommon clinical entity. We report our experience with three patients diagnosed with pulmonic valve endocarditis from our institution. Two cases were caused by Enterococcus faecalis (one was resistant to vancomycin) and one by coagulase-negative staphylococci (CNS). One of the cases of isolated pulmonic valve endocarditis due to the E. faecalis was nosocomially acquired; the case of CNS pulmonic valve endocarditis was dialysis catheter related. Each patient with isolated pulmonic valve endocarditis presented with hypotension and interstitial pulmonary infiltrates. Two patients were treated with linezolid. Both vancomycin-resistant enterococci (VRE) and CNS were eliminated from blood cultures on linezolid therapy. The challenges inherent in the management of pulmonic valve endocarditis mandate the development of individual patient-specific guidelines.
Insights
Isolated pulmonic valve endocarditis is rare, often caused by resistant bacteria like vancomycin-resistant Enterococcus faecalis. Linezolid showed promise in treating these challenging cases, highlighting the need for personalized patient management strategies.
Area of Science:
- Infectious Diseases
- Cardiology
- Critical Care Medicine
Background:
- Isolated pulmonic valve infective endocarditis (IE) is a rare clinical condition.
- Understanding the causative agents and patient presentations is crucial for effective management.
Observation:
- This study details three cases of pulmonic valve IE.
- Causative organisms included Enterococcus faecalis (one vancomycin-resistant) and coagulase-negative staphylococci (CNS).
- Nosocomial acquisition and dialysis catheter association were noted in specific cases.
Findings:
- Patients presented with hypotension and interstitial pulmonary infiltrates.
- Linezolid treatment successfully eradicated both vancomycin-resistant enterococci (VRE) and CNS from blood cultures.
- The efficacy of linezolid in these complex cases was demonstrated.
Implications:
- The management of pulmonic valve endocarditis presents unique challenges.
- Individualized, patient-specific treatment guidelines are essential for optimal outcomes.
- Further research into novel therapeutic approaches for rare IE forms is warranted.
Related Concept Videos
Endocarditis I: Introduction
Endocarditis III: Medical Management
Endocarditis II: Clinical Features of Infective Endocarditis
Endocarditis IV: Nursing Management
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