Bacteria: Gram Positive Branching Filamentous Rods Flashcards
Actinomyces israelii
- gram positive
- filamentous
- bacillus
- branching bacilli
- obligate anaerobes
Actinomyces israelii bacteria are a part of
the normal oral flora
Actinomyces israelii can cause
cervicofacial disease following oral/jaw trauma (including dental procedures)
actinomycosis can cause cervicofacial disease commonly following jaw trauma characterized by
firm abscesses in the face or neck that eventually form cutaneous sinus tracts
hard yellow granules (“sulfur granules”) drain from the sinus tracts in
cervicofacial actinomycosis
_______ is effective against Actinomyces israelii
Penicillin G
Nocardia asteroides
- gram positive
- filamentous
- bacillus
- branching bacilli
- obligate aerobes
- ubiquitous in soil
Nocardia asteroides bacteria stain
partially acid-fast due to mycolic acids in the cell membrane
Carbol fuchsin is a
dye used to detect acid-fast bacteria, such as Nocardia asteroides
Nocardia Asteroides bacteria are ______ positive
- gram
- catalase
- urease
Nocardiosis predominantly affects
immunocompromised patients
Pulmonary nocardiosis commonly causes
infiltrates, multifocal nodules, and cavitary lesions in the lungs
pulmonary nocardiosis can present with
pneumonia-like symptoms
Cavitary lesions of pulmonary nocardiosis are often misdiagnosed as
tuberculosis
Brain abscesses and ring-enhancing lesions on CT are features of
CNS nocardiosis
