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Question: You receive a urine culture report from the laboratory on a 45 year old patient who is a quadriplegic with an indwelling urinary tract catheter. The urine culture is growing >100,000 oxidase positive gram negative bacilli. The most likely organism is?
A. E. coli
B. Enterococcus
C. Klebsiella
D. Pseudomonas aeruginosa

Answer: D. Pseudomonas aeruginosa

Category Microbiology Interview Questions & Answers - Exam Mode / Learning Mode
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Question: You receive a urine culture report from the laboratory on a 45 year old patient who is a quadriplegic with an indwelling urinary tract catheter. The urine culture is growing >100,000 oxidase positive gram negative bacilli. The most likely organism is?
A. E. coli
B. Enterococcus
C. Klebsiella
D. Pseudomonas aeruginosa


Answer:

D. Pseudomonas aeruginosa Source: CoolInterview.com



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Related Questions
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A common type of nosocomial infection is?
A. Urinary tract infection
B. Meningitis
C. Cellulitis
D. Gastroenteritis
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A 45 year old woman is admitted to the hospital with acute chest pain. On the second hospital day it is clear that she has had a myocardial infarction. Unfortunately, on the same day she develops acute diarrhea. A stool culture grows Salmonella. This infection is?
A. Hospital acquired
B. Nosocomial
C. Iatrogenic
D. Community acquired
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The normal habitats of nonfermentative bacteria include the following except?
A. Contact lens solutions
B. Hospital water sources
C. House plants
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Nonfermentative gram negative bacilli are?
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C. Beta-hemolytic on sheep blood agar
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Helicobacter pylori?
A. Is the presumed cause of colon cancer?
B. Is the cause of most cases of acute food poisoning in the U.S.
C. Is the cause of about 90% of peptic ulcers in the U.S.
D. Is urease negative?
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A 15 year old boy comes in to clinic with pain in his right ear. He is on his school swim team and spends about 2 hours per day in the pool. Along with the pain in his ear, he has watery drainage coming from the ear canal. On exam his vital signs are normal, and he appears healthy, but his left external ear looks quite red and there is copious watery, slightly green drainage coming from the ear. The organism mostly likely causing this is?
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The single most important characteristic of diarrhea caused by Vibrio cholera is?
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Specific organisms that are considered strict anaerobes include?
A. E. coli and Streptococcus pneumoniae
B. Bacteroides and Klebsiella
C. Fusobacterium and Clostridium
D. Peptostreptococcus and Nocardia
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Anaerobic infections are?
A. Often continuous to mucosal surfaces
B. Associated with highly vascularized tissue
C. Gram negative
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Anaerobic infections are?
A. Often continuous to mucosal surfaces
B. Associated with highly vascularized tissue
C. Gram negative
D. Most likely to occur in the lung with its high oxygen level
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The laboratory reports that both blood cultures that are drawn from a 15 year old girl are growing Bacteroides fragilis. She was admitted to the hospital because of acute abdominal pain. You should be concerned that?
A. She has acute gastroenteritis and the organism is entering the blood from the inflamed bowel endothelial surface
B. She has a bowel perforation and intraabdominal tissue destruction with impaired vascular flow
C. She has gram negative sepsis and the Bacteroides is a contaminant
D. She has pelvic inflammatory disease with gonorrhea, a sexually transmitted disease, and the Bacteroides is a contaminant
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Infections caused by anaerobes are?

* A. Usually confined to the abdomen
B. Never seen in the lung because of its excellent blood supply
C. Mixed
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On the same day the clinical laboratory identifies two strains of the same bacterial species. One of these strains has pili on the surface; the other does not. In terms of the clinical status of the two patients it is likely that?
A. Patient with the piliated strain is ill, the other patient is not
B. Patient with the piliated strain is not ill, the other patient is
C. Both patients are ill since pili do not correlate with virulence
D. Patient with the piliated strain is a child, the other patient is an adult
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Characteristics of a bacterial capsule include?
A. All bacteria have one
B. It is composed of peptidoglycan
C. It is an important mechanism for protecting a bacteria against ingestion by PMNs
D. It is what causes the gram stain reaction
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A person who has a normal healthy immune system acquires a new strain of E. coli that now lives in his gastrointestinal tract. This individual is not ill. A second person with an acute leukemia and no white blood cells acquires the same organism, develops diarrhea followed by hypotension, bacteremia, sepsis, and death. This organism is?
A. Normal flora for both individuals
B. A pathogen for both individuals
C. An opportunistic pathogen for both individuals
D. One with a low degree of virulence
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A 20 year old patient comes to the homeless clinic with a skin abscess on the right arm. A swab from the intact skin overlying this abscess grows coagulase negative staphylococci. An aspirate obtained sterilely with a needle and syringe grows Staphylococcus aureus. About these 2 organisms in this patient you can say?
A. Both are normal flora and contaminated the specimens sent to the lab
B. The staph aureus is a pathogen and the coagulase negative staph is not
C. The coagulase negative staphylococcus is a pathogen
D. The coagulase negative staphylococcus is an opportunistic pathogen
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Which of the following diseases are not transmitted by ticks?
A. Ulceroglandular tularemia
B. Bubonic plague
C. Relapsing fever
D. Lyme disease
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Which of the following diseases are not transmitted by ticks?
A. Ulceroglandular tularemia
B. Bubonic plague
C. Relapsing fever
D. Lyme disease
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A 42 year old woman who was complaining of shaking chills and fever went to the Salt Lake City Homeless clinic. She had enlarged lymph nodes in the right axilla. Upstream from the enlarged nodes was an ulcer on the top of the patients right hand. When carefully questioned, the patient said she remembered being bitten there by an insect resembling a horsefly, but with yellow stripes on its abdomen; Its what we used to call a deerfly, she added laconically. The patient denied any contact with rats or fleas. The patients disease was most likely to be:?
A. Brucellosis
B. Ulcero-glandular tularemia
C. Pneumonic plague
D. Relapsing fever
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It is extremely difficult to eradicate staphylococcal infection in the presence of a foreign body. Thus, infected artificial joints and infected intravenous lines often must be removed in conjunction with optimal intravenous anti-staphylococcal therapy with oxacillin or nafcillin (sometimes in combination with rifampin) in order to eradicate such staphylococcal infections (and these attempts are not always successful). Staphylococcal infection of bone may persist for many years despite what should be optimal antimicrobial therapy. The most likely reason for this tenacity of staphylococcal osteomyelitis is:?
A. The Staphylococcal pilus gene is up-regulated by oxacillin
B. Fragments of dead bone, called "involucrum" may act as a foreign body, and may have to be removed for optimal eradication of the staphylococcal infection.
C. Staphylococci may be perceived by the patient's immune system as a positive factor, because the staphylococci produce an extracellular enzyme, obtundokinase, which makes the patient more alert.
D. Staphylococci are such an integral part of our normal flora that they are treated as "self" rather than "non-self", and no immune reaction to them occurs.
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