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During annual TST, an employee’s test result was read as 10 mm induration.
The employee’s last TST was negative. This initial result indicates a:
Which is true about a tuberculin skin test (TST):
A patient is admitted with pruritic lesions on the hands, webs of fingers, wrists, the extensor surfaces of the elbows and knees, and the outer surfaces of the feet, armpits, buttocks, and waist. The most likely diagnosis is:
An infection preventionist (IP) is reviewing the cerebrospinal fluid (CSF) results from a patient admitted the previous night. The CSF is cloudy and has an elevated white blood cell count (WBC), markedly increased neutrophils, low glucose level, and elevated protein concentration.
What type of meningitis should she suspect?
The management of an infected surgical site includes the following foundational principles:
1) Open and drain the incision
2) Debride fibrous debris and necrotic soft tissues
3) Replace hardware
4) Implement antimicrobial management as needed
5) Manage the open wound
Which of the following is not likely to contaminate total parenteral nutrition?
All of the following organisms can penetrate the intact epithelium of the conjunctiva or cornea except:
When reviewing the Gram stain of a person with a wound infection, the IP sees Gram-positive organisms in clusters.
Which organism would this most likely represent?
A Gram-negative bacterium that is responsible for chronic antral gastritis and is a major factor in peptic ulcer disease is:
Which organism found in food poisoning causes the most rapid onset of symptoms?
The Emergency Department reports three cases of cramping, abdominal pain, and diarrhea within a 24-hour period. All persons are from the same community, and onset of symptoms was within 12 to 36 hours of a picnic they all attended. The IP suspects which of the following foodborne illnesses:
An example of an obligate intracellular parasitic bacterium would be an organism responsible for:
2) Q fever
4) Epidemic typhus
Patients with cell-mediated immunity dysfunction are susceptible to infections attributed to pathogenic intracellular bacteria.
Examples of these organisms include:
1) Salmonella typhi
2) Bacteroides fragilis
3) Listeria monocytogenes
4) Staphylococcus aureus
Higher morbidity rates in chronic Hepatitis B virus (HBV) carriers are associated with a co-infection of which of the following:
A urine specimen collected from an indwelling urinary catheter was sent to the laboratory for culture and sensitivity testing. Culture results reported a colony count of 50,000 CFU/ml of Escherichia coli. Sensitivity testing reported resistance to cephalosporin and sensitivity to ciprofloxacin. This organism is an example of:
Which immune marker represents past exposure to disease?
Western blot testing for human immunodeficiency virus (HIV) is used to detect:
When are lgM antibodies to Hepatitis A virus (HAV) detectable in the blood?
Measures that can be practiced for prevention of aspirationinclude all of the following except:
Which factor is commonly associated with Clostridium difficile infections (CDis)?