CBiC Exam 1 Review Questions With Correct Answers

which of the following is an example of the criterion of strength of the association from hills criteria for causation? a. in the study of the association between antibiotic exposure and development of c difficile infection the odds ratio was 2:3 b. in the study of the association between antibiotic exposure and development of c difficile infection the authors conclusions are consistent with those of three other studies c. in a study of the association between antibiotic exposure and development of c difficile infection antibiotic therapy began an average of 3 weeks before c difficile infection developed d. in a study of the association between antibiotic exposure and development of c difficile infection prolonged antibiotic therapy was a greater risk for c difficile infection than short-term antibiotic therapy. - Answer a which of the following organisms have been associated with the transmission of infections after body piercing? 1) atypical mycobacterium species 2) staphylococcus species 3) pseudomonas species 4) haemophilus species a. 1,2,3 b. 2,3,4 c. 1,3,4 d. 1,2,4 - Answer a all of the following may be indications of a HVAC malfunction except a an increase in the post-operative surgical site infection b. a single case of aspergillosis in a severely immunocompromised patient c. healthcare associated varicella infections d. An outbreak of ventilator associated acinetobacter infections in the ICU - Answer d a patient is suspected of having pertussis a nasal pharyngeal aspirate is collected for direct fluorescent antibody testing and for culture 8 hours after antimicrobial therapy is started The DFA test is negative but the culture test is positive does this patient have pertussis? a. no because the DFA test is highly specific and it was negative b. no because culture of bordetella pertussis has very low sensitivity c. no because I'll testing is unreliable if antimicrobial therapy has been initiated prior to specimen collection d.Yes because the culture test is 100% specific for identification of bordetella pertussis - Answer d The most common organism associated with pneumonia and school-age children and young adults is a. neisseria meningitis b. streptococcus pneumonia c. staphylococcus aureus d. Mycoplasma pneumonia - Answer d a preliminary microbiology report states that a patient's blood culture grew aerobic gram-negative bacilli which of the following is most likely genus and species of the organism a. enterococcus faecalis b. bacteroides fragilis c. acinetobacter baumanii d. Neisseria meningitis - Answer c and acute care facility experiences and outbreak of seratia marcescensbloodstream infections after the outbreak is under control and no new cases are being reported The IP wants to find the source of the outbreak The most appropriate and epidemiology study designed to use is a. retrospective cohort study b. prospective cohort study c. case control study d. cross-sectional study - Answer c important considerations regarding blood culture specimens include 1) collect prior to the initiation of antimicrobial therapy 2) collect from a central venous catheter whenever possible 3) ensure that the volume of the specimen collected is sufficient 4) culture of specific sites is not recommended for surveillance a. 1,3 b. 2,4 c. 1,4 d. 3,4 - Answer a which of the following is not an infection prevention objective of an occupational health program a. contain caused by preventing infectious diseases that result in absenteeism and disability b. provide care to personnel for work-related illnesses or exposure c. educate patients about the principles of infection prevention d. collaborate with the infection prevention department and monitoring and investigating potentially harmful infectious exposures and outbreaks - Answer c - Answer The biological indicator that was included in a steam sterilization load of non-implantable instruments has shown a positive result as have biological indicators used in two additional follow-up tests of the sterilizer the chemical indicator in the original load was reactive as were the chemical indicators used in the follow-up tests The log of all the runs indicates that the run conditions (temperature and time)were appropriate for the instrument load and there would no abnormalities and steam supply or electrical supply which of the following should be done next a. The load should be released for use in the facility b. The sterilizer should be tested again with paired biological indicators from two different manufacturers c. The items from the load should be immediately recalled and reprocessed d. all items that were processed in that sterilizer since the time of the last negative biological indicator should be recalled and reprocessed - Answer b what action is indicated when the IP is asked to help determine if a worker has experienced occupational acquisition of infectious agents or disease in order to receive workers' compensation benefit a. provide enough information to prove or disprove the employees claim b. notify the facilities attorney immediately c. review the workers' compensation system in place d. perform a root cause analysis to investigate - Answer c The safe temperature range for cold food storage is a. 41 degrees Fahrenheit / 5° c or lower b. 42° f to 50° f/5.6° c to 10° c c. 50° f to 55° f/10° c to 12.8° c d. less than 60 degrees Fahrenheit / 15.6 degrees Celsius - Answer a a robust performance improvement team should perform all of the following except a. observational audits b. benchmark comparisons c. root cause analysis d. housewide infection rates - Answer d the following blood culture result should be considered a potential contaminated a. a positive result of coagulase negative staphylococci from two sets two days apart without symptoms b. a positive result of staph aureus from one bottle and a patient with the temperature of 38. 6° c c. a positive result of e coli from one bottle and a fibrile patient with diarrhea d. a positive result of Candida albicans and a fungal blood culture in a patient with a urinary tract infection - Answer a an employee has experienced an accidental needle stick injury while providing care to a patient all of the following lab tests would be appropriate for the source patient except a. HIV b. hepatitis b antibody c. hepatitis b surface antigen d. hepatitis c surface antigen - Answer b