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Isolated right-sided endocarditis in Hong Kong Chinese
1Department of Pathology, University of Hong Kong, Queen Mary Hospital.
The American Journal of Cardiovascular Pathology
|January 1, 1993
Summary
Right-sided endocarditis is rare, often infective and linked to intravenous drug use. Recognizing these cases is crucial as they may respond better to treatment than left-sided endocarditis.
Area of Science:
- Cardiology
- Pathology
- Infectious Diseases
Background:
- Right-sided endocarditis is less common than left-sided endocarditis.
- Understanding its causes, associations, and complications is important for clinical management.
Purpose of the Study:
- To investigate the prevalence and characteristics of right-sided endocarditis.
- To identify predisposing factors, causative organisms, and complications.
- To compare infective and non-infective cases.
Main Methods:
- Retrospective autopsy study of 9406 consecutive cases.
- Histological confirmation of endocarditis.
- Analysis of patient demographics, underlying conditions, and clinical associations.
Main Results:
- Thirteen cases of right-sided endocarditis identified (0.14% prevalence).
- Tricuspid valve involved in 11 cases; atrial endocardium in 2.
- Eight infective cases (Staphylococcus aureus predominant) linked to IV drug abuse; 5 non-infective cases associated with malignancy.
- Lung abscess from septic emboli was the most frequent complication in drug addicts.
Conclusions:
- Right-sided endocarditis is uncommon, often infective, and associated with intravenous drug abuse.
- Non-infective cases are frequently linked to malignancy.
- Early recognition of right-sided endocarditis, particularly infective forms, is vital due to potentially better treatment response compared to left-sided disease.