Stool Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Stool and links to relevant pages within the course.
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| This suspicious form, shown below at both low (10X) and high dry (40X) power, measures 90 micro meters by 42 micro meters. It was seen in a stool sample. | View Page |
| This suspicious form, found in a stool sample, measures 15 micro meters. | View Page |
| This intestinal parasite, found in stool, measures 170 micro meters by 63 micro meters. | View Page |
| This suspicious form was found in stool. | View Page |
| I measure 15 micro meters and am found in stool. | View Page |
| I measure 12 micro meters and am found in stool. | View Page |
| I may be found in stool. | View Page |
| Which one of the following statement about Campylobactor jejunisp. jejuni is false: | View Page |
| A 20 year-old female was admitted into the hospital complaining of 10 to 15 bloody mucous stools per day, fever, gastrointestinal disturbances, abdominal pain, and nausea. The preliminary O & P report went out as "Probable Entamoeba histolytica trophozoites and cysts, confirmation pending." This patient is most likely suffering from: | View Page |
| Which of the following specimens is the most sensitive for detecting active CMV infection: | View Page |
| Which one of the following statements about E.coli O157:H7 is false: | View Page |
| Review 1 Garbutt JM. Littenberg B. Evanoff BA. Sahm D. Mundy LM.
Enteric carriage of vancomycin-resistant Enterococcus faecium in patients tested for Clostridium difficile.
Infection Control & Hospital Epidemiology. 20(10):664-70, 1999OBJECTIVE: To identify independent risk factors for enteric carriage of vancomycin-resistant Enterococcus faecium (VREF) in hospitalized patients tested for Clostridium difficile toxin.PATIENTS: Convenience sample of 215 adult inpatients who had stool tested for C. difficile between January 29 and February 25, 1996.RESULTS: 41 (19%) of 215 patients had enteric carriage of VREF. Five independent risk factors for enteric VREF were identified: (1) history of prior C. difficile infection, (2) parenteral treatment with vancomycin for > or = 5 days, (3) treatment with antimicrobials effective against gram-negative organisms, (4) admission from another institution, and (5) age > 60 years. These risk factors for enteric VREF were independent of the patient's current C. difficile status.CONCLUSIONS: Antimicrobial exposures are the most important modifiable independent risk factors for enteric carriage of VREF in hospitalized patients tested for C. difficile. | View Page |
| Case History A 63 year old man was seen in the emergency room with the complaints of sudden onset of fever, chills, and abdominal pain, accompanied by mild diarrhea. The blood pressure was 140/84, the pulse rate 82/minute, and the body temperature 39.8C. A blood sample was drawn for a complete blood count, and a blood culture.A second blood culture was drawn from the opposite arm, with 10 ml of blood being placed into each an aerobic and an anaerobic bottle, following customary practice.The complete blood count revealed a hemoglobin of 15.8 mg/dl, a hematocrit of 45%, and a white blood count of 4.2/L. The neutrophils were 39%, lymphocytes 45%, monocytes 10%, eosinophils 4% and basophils 2%. The platelet count was 255/L. The patient was admitted to the hospital for further work-up and empiric antibiotic therapy.Within 24 hours after admission, the body temperature had decreased to 38.2C, although the mild diarrhea persisted.A stool toxin test for Clostridium difficile was negative and neither enteric pathogens nor Campylobacter species were recovered in stool culture after 24 hours incubation. Fecal neutrophils were not seen on direct examination.
The anaerobic blood culture became positive 36 hours after inoculation. | View Page |