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Related Experiment Videos

Ampicillin resistant Haemophilus parainfluenzae endocarditis.

P W Smith, W A Chambers, C A Walker

    The American Journal of the Medical Sciences
    |September 1, 1979
    PubMed
    Summary

    This case report details Haemophilus parainfluenzae endocarditis, the first caused by ampicillin-resistant strains not mediated by beta-lactamase. Chloramphenicol therapy proved curative after ampicillin failed.

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    Area of Science:

    • Infectious Diseases
    • Bacteriology
    • Cardiology

    Background:

    • Bacterial endocarditis is a serious infection of the heart's inner lining.
    • Haemophilus parainfluenzae is a Gram-negative bacterium that can cause various infections.

    Observation:

    • A patient presented with endocarditis caused by Haemophilus parainfluenzae.
    • The causative organism exhibited resistance to ampicillin.
    • This resistance mechanism was not attributed to beta-lactamase production.

    Findings:

    • This represents the first reported instance of endocarditis due to ampicillin-resistant Haemophilus parainfluenzae.
    • Initial ampicillin treatment was ineffective in controlling the infection.
    • A four-week course of chloramphenicol successfully eradicated the bacteria and resolved the endocarditis.

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    Implications:

    • Highlights the emergence of antibiotic resistance in Haemophilus parainfluenzae.
    • Suggests chloramphenicol as a potential therapeutic option for resistant cases.
    • Underscores the importance of susceptibility testing in guiding endocarditis treatment.