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Late prosthetic valve endocarditis

D Horstkotte1, C Piper, R Niehues

  • 1Department of Cardiology, University Hospital Benjamin Franklin, Berlin, Germany.

European Heart Journal
|April 1, 1995
PubMed

Insights

Prosthetic valve endocarditis (PVE) is a serious complication. Late PVE, occurring after 60 days, involves different organisms and requires prolonged antibiotic therapy and careful management of anticoagulation and surgical intervention.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Cardiac Surgery

Background:

  • Prosthetic valve endocarditis (PVE) is a severe complication following valve replacement surgery.
  • Late PVE, defined as occurring >60 days post-surgery, presents distinct microbiological and clinical characteristics compared to early PVE.
  • Identifying infection sources is crucial, with dental procedures, urological interventions, and catheters being common culprits.

Purpose of the Study:

  • To summarize the characteristics, common pathogens, and management principles of late prosthetic valve endocarditis.
  • To highlight differences in causative organisms between early and late PVE.
  • To outline current treatment strategies, including antibiotic therapy, anticoagulation, and surgical indications.

Main Methods:

  • Review of existing literature on prosthetic valve endocarditis.
  • Analysis of common bacterial and fungal organisms associated with late PVE.
  • Comparison of treatment protocols for native and prosthetic valve endocarditis.

Main Results:

  • Late PVE is less frequently associated with staphylococci, Gram-negative bacteria, and fungi compared to early PVE.
  • Commonly implicated organisms in late PVE include S. epidermidis, S. aureus, viridans streptococci, and enterococci.
  • Antibiotic therapy for late PVE requires prolonged duration and maximal non-toxic concentrations.

Conclusions:

  • Management of late PVE necessitates extended antibiotic courses and careful monitoring.
  • Oral anticoagulants should be discontinued and replaced with intravenous heparin.
  • Surgical intervention is indicated for large mobile vegetations or embolic events.

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