NEW
Font size
WorksheetsInfection
Total questions: 21
Worksheet time: 8mins
Transferrin plays a role in host defense by
Sequestering iron, which is necessary for microbial growth
Increasing the ability of fibrinogen to trap microbes
Direct injury to bacterial cell membrane
Direct injury to bacterial mitochondria
Which is not a component of SIRS?
Temperature
WBC
BP
HR
The best method for hair removal from an operative field is
Shaving the night before
Depilating the night before surgery
Shaving in the OR
Using hair clippers in the OR
A pt w/necrotizing pancreatitis undergoes CT guided aspiration, which results in growth of E. coli on culture. The most appropriate treatment is
Culture appropriate ABX
ERCP w/sphincterotomy
CT guided drain placement
Exploratory laparotomy
Which does not influence the development of surgical site infections?
Duration of procedure
Degree of microbial contamination of the wound
Malnutrition
General anesthesia
During a lap appendectomy, a large bowel injury was caused during trochar placement w/spillage of bowel contents into the abdomen. What is the surgical wound class?
Clean (I)
Clean Contaminated (II)
Contaminated (III)
Dirty (IV)
The most appropriate therapy for a 4 cm hepatic abscess is
ABX therapy alone
Aspiration for culture & ABX therapy
Percutaneous drainage & ABX therapy
Operative exploration, open drainage of the abscess, & ABX therapy
Post-op UTIs
Are usually treated with a 7-10 day course of ABX
Initial therapy should be directed by results of urine culture
Are established by >104 CFU/ml of bacteria in urine culture in asymptomatic patients
Can be reduced by irrigating indwelling Foley catheter daily
The first step in evaluation & treatment of a pt w/ an infected bug bite on the leg w/ cellulitis, bullae, thin grayish fluid draining form the wound, and pain out of proportion to the physical findings is
Obtain CRP
CT scan
MRI
Operative exploration
What is FALSE regarding IV catheter infections?
Selected low virulence infections can be treated with a prolonged course of ABX
In high risk patients, PPX ABX infused through the catheter can reduce rate of catheter infections
Bacteremia w/ gam-negative bacteria or fungi should prompt catheter removal
Many patients w/ IV catheter infections are asymptomatic
Patients with a PCN allergy are least likely to have a cross reaction w/
Synthetic penicillins
Carbapenems
Cephalosporins
Monobactams
What is the estimated risk of HIV transmission from a needlestick from a source w/HIV infected blood ?
<0.5%
1%
5%
10%
Closure of an appendectomy wound in a patent with perforated appendicitis who is receiving appropriate ABX will result in a wound infection in what percentage of patients?
3-4%
8-12%
15-18%
22-25%
A chronic carrier state occurs w/ HCV infection in what percentage of patients?
90-99%
75-80%
50-60%
10-30%
Possible exposure to anthrax should be initially treated with
Colistin
Ciprofloxacin or doxycylcine
Amoxicillin
Observation
The most effective post exposure apps for a surgeon w/ a needle stick while operating on an HIV positive patient is
None
2 or 3 drug therapy started w/in hours
Single drug therapy started within 24 hours of exposure
3 drug therapy started within 24 hours of exposure
What is not an early goal in treatment of severe sepsis?
MAP > 65 mm Hg
CVP 8-12 mm Hg
Uine output >0.5cc/kg/h
Serume lactate <2 mol
A patient in the ICU has been on ventilator support for 3 weeks. He has new onset elevated WBC count, fever, & consolidation seen on CXR. What is an appropriate next step?
Exchange eT tube & change respiratory circuit
Obtain BAL
Start treatment w/Empiric Penicillin G
Obtain chest CT
Patient w/ severe necrotizing pancreatitis should be treated with
No ABX unless CT guided aspiration of the area yields positive cultures
Empiric cefoxitin or cefotetan
Empiric cefuroxime plus gentamicin
Empiric carbapenems or fluroquinolones
A patient w/ a localized wound infection after surgery should be treated with
ABX & warm soaks to the wound
ABX alone
ABX & opening the wound
I & D alone
Which areas likely do not contain resident microorganisms?
Terminal ileum
Oropharynx
Main pancreatic duct
Nares
