Fragilis Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Fragilis and links to relevant pages within the course.
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| Which of the following organisms is not an aerobic organism: | View Page |
| The gram stain shown in the photograph was prepared from a positive anaerobic blood culture bottle after 36 hours incubation. Based on the morphology of the bacterial cells (some with spores--blue arrows), the most likely identification is: | View Page |
| Review 2 Citron DM. Appelbaum PC.:
How far should a clinical laboratory go in identifying anaerobic isolates, and who should pay?
Clinical Infectious Diseases. 16 Suppl 4:S435-8, 1993Identification of anaerobic bacteria in specimens from sites of infection due to mixed organisms can be time-consuming and expensive. Laboratories should limit anaerobic workups by testing only those specimens that have been properly collected and transported to the laboratory.Use of selective and differential media for initial processing can provide rapid and relevant information to the clinician. Anaerobes isolated from normally sterile sites and sites of serious infection should always be completely identified. Group-or genus-level identifications may suffice in other instances.The Bacteroides fragilis group of organisms should always be identified because of their virulence and resistance to many antimicrobial agents.Some of the other organisms that warrant identification include Clostridium septicum (associated with gastrointestinal malignancy); Clostridium ramosum, Clostridium innocuum, and Clostridium clostridioforme (which are resistant to antibiotics); Clostridium perfringens (a cause of myonecrosis and gas gangrene,potentially serious infection); anaerobic cocci (which may be resistant to metronidazole and clindamycin); and fusobacteria (which may be virulent and resistant to clindamycin and penicillin). | View Page |
| Match the species of anaerobes and frequently associated conditions. | View Page |
| Match each parasite listed here with its corresponding infective stage: | View Page |
| Match each parasite listed here with its corresponding diagnostic stage: | View Page |
| Which of the following parasites typically survive human stomach juices? | View Page |
| Arrange the parasites listed here in increasing order (starting with none) based on the length of their undulating membranes: | View Page |
| A 10 year old male presented to the local Appalachian Mountain clinic complaining of vomiting, fever and severe abdominal pain. Patient history revealed that the child lives in the area in substandard conditions and receives only one balanced meal per day. A stool was collected and submitted for parasite study. This suspicious form, measuring 50 µm by 35 µm was found. This patient is most likely infected with: | View Page |
| A 6 year old female presented to the local clinic complaining of intense perianal itching and diarrhea. The doctor ordered a cellophane tape prep and stool for routine culture and parasitic examination. The cellophane tape prep revealed suspicious form on the left. The stool culture was negative. The form on the right was seen upon examination of the stool for parasites, which measures 10 µm. Label these two suspicious forms: | View Page |
| I am 12 µm in size and reside in stool. I may be easily missed since I tend to "blend-in" with fecal debris. | View Page |
| I am found in stool and measure 10 µm by 8 µm. | View Page |
| This suspicious form measures 18 µm and was seen in stool. Name that parasite! | View Page |