A 57 year old female has an infected wound on her left leg. The doctor orders...
A 57 year old female has an infected wound on her left leg. The doctor orders both an anaerobic and aerobic culture with a gram stain. Gram stain from the direct specimen shows many Gram negative rods. After two days, the aerobic culture only shows few normal flora. The anaerobic culture does grow many Gram negative rods. On the bile esculin agar plate, the colonies are black. What is the most likely organism?
Homework Answers
According to the staining results, the organism is gram-negative and rod-shaped. Further, growth in anaerobic culture indicates that the bacteria are anaerobic. Doing the esculin agar plate test shows black colonies which are produced by hydrolysis of esculin.
Interpreting the above information the organism is gram-negative, anaerobic, rod-shaped bacteria. This type of bacteria is commonly present on the mucus membrane flora all over the body. These bacterial are also called secondary pathogens as they involve in various infections. They also have species that most antibiotic arrangement. Examples of these bacteria are Bacteroides, fusobacterium, and Prevotella.
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A 57 year old female has an infected wound on her left leg. The
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protein of 89mg/dl. Gram stain showed yeast and India ink negative
stain showed a thick capsule.
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