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Volume 15, Number 3—March 2009

CME ACTIVITY

Clinical Risk Factors for Severe Clostridium difficile–associated Disease

To obtain credit, you should first read the journal article. After reading the article, you should be able to answer the following, related, multiple-choice questions. To complete the questions and earn continuing medical education (CME) credit, please go to http://www.medscape.com/cme/eid. Credit cannot be obtained for tests completed on paper, although you may use the worksheet below to keep a record of your answers. You must be a registered user on Medscape.com. If you are not registered on Medscape.com, please click on the New Users: Free Registration link on the left hand side of the website to register. Only one answer is correct for each question. Once you successfully answer all post-test questions you will be able to view and/or print your certificate. For questions regarding the content of this activity, contact the accredited provider, CME@medscape.net. For technical assistance, contact CME@webmd.net. American Medical Association's Physician's Recognition Award (AMA PRA) credits are accepted in the US as evidence of participation in CME activities. For further information on this award, please refer to http://www.ama-assn.org/ama/pub/category/2922.html. The AMA has determined that physicians not licensed in the US who participate in this CME activity are eligible for AMA PRA Category 1 Credits™. Through agreements that the AMA has made with agencies in some countries, AMA PRA credit is acceptable as evidence of participation in CME activities. If you are not licensed in the US and want to obtain an AMA PRA CME credit, please complete the questions online, print the certificate and present it to your national medical association.

Clinical Risk Factors for Severe Clostridium difficile-associated Disease

CME Questions

1. All of the following were criteria for severe Clostridium difficile–associated disease (CDAD) in the current study, except:

A. One or more intensive care unit admissions in which C. difficile was a major contributor

B. Prolonged symptoms past 14 days requiring intravenous fluid replacement

C. Colectomy or other surgery directly attributed to C. difficile

D. Intestinal perforation in the setting of C. difficile infection

2. What was the prevalence of severe CDAD among all of the cases of CDAD in the current study?

A. <1%

B. 12%

C. 29%

D. 44%

3. Which of the following patient factors was most associated with an increased risk for severe CDAD on multivariate analysis of the current study?

A. Age >70 years

B. Chemotherapy use

C. Antimicrobial use

D. Previous hospital stay

4. All of the following laboratory factors were predictive of an increased risk for CDAD in the current study, except:

A. White blood cell count >20,000 cells/mL

B. Serum albumin <2.5 g/dL

C. Creatinine >2 mg/dL

D. Alanine aminotransferase >40 U/L

Activity Evaluation

1. The activity supported the learning objectives.
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2. The material was organized clearly for learning to occur.
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3. The content learned from this activity will impact my practice.
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4. The activity was presented objectively and free of commercial bias.
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