Question 1

For more serious infections caused by Acinetobacter spp. ,such as pneumonia or bacteremia,effective treatment may require the use of:

Accepted Answer

A) multiple rounds of penicillin or a similar antibiotic. 
B) a β-lactam agent in combination with an aminoglycoside antibiotic. 
C) repeated high-level doses of gentamycin. 
D) single-drug therapy in combination with a steroid. 
A) multiple rounds of penicillin or a similar antibiotic. 
B) a β-lactam agent in combination with an aminoglycoside antibiotic. 
C) repeated high-level doses of gentamycin. 
D) single-drug therapy in combination with a steroid. B

Question 2

Which organism is oxidase-negative,oxidizes glucose,and is a nonlactose fermenter?

Accepted Answer

A) Escherichia 
B) Pseudomonas 
C) Acinetobacter 
D) Moraxella 
A) Escherichia 
B) Pseudomonas 
C) Acinetobacter 
D) Moraxella C

Question 3

A bronchoscopy was performed on a patient who later developed a nosocomial infection as a result of the procedure.The organism recovered from his lung was a nonlactose fermenter that oxidized glucose and maltose,was lysine decarboxylase-positive,and was motile.The organism is most likely which one of the following?

Accepted Answer

A) Bordetella parapertussis 
B) Saccharolytic Acinetobacter 
C) P.luteola 
D) S.maltophilia 
A) Bordetella parapertussis 
B) Saccharolytic Acinetobacter 
C) P.luteola 
D) S.maltophilia D

Question 4

Differentiation of S.maltophilia and Burkholderia cepacia is best accomplished by:

Accepted Answer

A) the oxidase test. 
B) maltose and glucose medium. 
C) tyrosine-enriched heart infusion agar. 
D) nitrate reduction. 
A) the oxidase test. 
B) maltose and glucose medium. 
C) tyrosine-enriched heart infusion agar. 
D) nitrate reduction.

Question 5

Of the following species,which are widely distributed in nature and hospital environments?

Accepted Answer

A) Pseudomonas luteola 
B) Acinetobacter spp. 
C) Pseudomonas oryzihabitans 
D) Bordetella trematum 
A) Pseudomonas luteola 
B) Acinetobacter spp. 
C) Pseudomonas oryzihabitans 
D) Bordetella trematum

Question 6

Plump coccobacilli that tend to resist alcohol decolorization and may be mistaken for Neisseria spp.are:

Accepted Answer

A) Bordetella spp. 
B) S.maltophilia. 
C) Acinetobacter spp. 
D) P.oryzihabitans. 
A) Bordetella spp. 
B) S.maltophilia. 
C) Acinetobacter spp. 
D) P.oryzihabitans.

Question 7

Which organism may be mistaken for a lactose fermenter on MacConkey agar because of colonies exhibiting a purple hue on the media?

Accepted Answer

A) Acinetobacter spp. 
B) P.luteola 
C) S.maltophilia 
D) Bordetella holmesii 
A) Acinetobacter spp. 
B) P.luteola 
C) S.maltophilia 
D) Bordetella holmesii

Question 8

Which organism is often isolated in the sputum of patients with cystic fibrosis?

Accepted Answer

A) Acinetobacter spp. 
B) B.trematum 
C) Burkholderia gladioli 
D) S.maltophilia 
A) Acinetobacter spp. 
B) B.trematum 
C) Burkholderia gladioli 
D) S.maltophilia

Question 9

The natural habitat of Acinetobacter sp.can best be described as the:

Accepted Answer

A) mucous membranes of animals. 
B) gastrointestinal tract of humans and other animals. 
C) natural environment. 
D) genitourinary tract of animals. 
A) mucous membranes of animals. 
B) gastrointestinal tract of humans and other animals. 
C) natural environment. 
D) genitourinary tract of animals.

Question 10

The primary drug of choice for infections caused by S.maltophilia is:

Accepted Answer

A) a β-lactam agent in combination with an aminoglycoside antibiotic. 
B) trimethoprim-sulfamethoxazole. 
C) ticarcillin and clavulanic acid. 
D) chloramphenicol. 
A) a β-lactam agent in combination with an aminoglycoside antibiotic. 
B) trimethoprim-sulfamethoxazole. 
C) ticarcillin and clavulanic acid. 
D) chloramphenicol.

Exam 19: Acinetobacter, Stenotrophomonas, and Other Organisms

For more serious infections caused by Acinetobacter spp. ,such as pneumonia or bacteremia,effective treatment may require the use of:

Which organism is oxidase-negative,oxidizes glucose,and is a nonlactose fermenter?

Differentiation of S.maltophilia and Burkholderia cepacia is best accomplished by:

Of the following species,which are widely distributed in nature and hospital environments?

Plump coccobacilli that tend to resist alcohol decolorization and may be mistaken for Neisseria spp.are:

Which organism may be mistaken for a lactose fermenter on MacConkey agar because of colonies exhibiting a purple hue on the media?

Which organism is often isolated in the sputum of patients with cystic fibrosis?

The natural habitat of Acinetobacter sp.can best be described as the:

The primary drug of choice for infections caused by S.maltophilia is:

Microbial Taxonomy

Bacterial Genetics, metabolism, and Structure

Host-Microorganism Interactions

Laboratory Safety

Specimen Management

Role of Microscopy

Traditional Cultivation and Identification

Nucleic Acid-Based Analytic Methods for Microbial Identification and Characterization

Overview of Immunochemical Methods Used for Organism Detection

Principles of Antimicrobial Action Resistance

Laboratory Methods and Strategies for Antimicrobial Susceptibility Testing

Staphylococcus, Micrococcus, and Similar Organisms

Streptococcus, Enterococcus, and Similar Organisms

Bacillus and Similar Organisms

Listeria Corynebacterium and Similar Organisms

Erysipelothrix, Lactobacillus, and Similar Organisms

Nocardia, Streptomyces, Rhodococcus, Oerskovia, and Similar Organisms

Enterobacteriaceae

Pseudomonas, Burkholderia, and Similar Organisms

Achromobacter, Rhizobium, Ochrobactrum, and Similar Organisms

Chryseobacterium, Sphingobacterium, and Similar Organisms

Alcaligenes, Bordetella Nonpertussis, Comamonas, and Similar Organisms

Vibrio, aeromonas, Plesiomonas Shigelloides, and Chromobacterium Violaceum

Sphingomonas Paucimobilis and Similar Organisms

Moraxella

Eikenella Corrodens and Similar Organisms

Pasteurella and Similar Organisms

Actinobacillus, Kingella, Cardiobacterium, Capnocytophaga, and Similar Organisms

Haemophilus

Bartonella and Afipia

Campylobacter, Arcobacter, and Helicobacter

Legionella

Brucella

Bordetella Pertussis and Bordetella Parapertussis

Francisella

Streptobacillus Moniliformis and Spirillum Minus

Neisseria and Moraxella Catarrhalis

Overview and General Considerations

Laboratory Considerations

Mycobacteria

Obligate Intracellular and Non-culturable Bacterial Agents

Cell Walldeficient Bacteria: Mycoplasma and Ureaplasma

The Spirochetes

Overview of the Methods and Strategies in Parasitology

Intestinal Protozoa

Blood and Tissue Protozoa

Protozoa From Other Body Sites

Intestinal Nematodes

Tissue Nematodes

Blood Nematodes

Intestinal Cestodes

Tissue Cestodes

Intestinal Trematodes

Liver and Lung Trematodes

Blood Trematodes

Overview of Fungal Identification Methods and Strategies

Hyaline Molds, Zygomycetes, Dermatophytes, and Opportunistic and Systemic Mycoses

Dematiaceious Molds

Opportunistic Atypical Fungus: Pjirovecii

The Yeasts

Anti-fungal Susceptibility Testing, therapy, and Prevention

Overview of the Methods and Strategies in Virology

Viruses in Human Disease

Antiviral Therapy Susceptibility Testing and Prevention

Bloodstream Infections

Infections of the Lower Respiratory Tract

Upper Respiratory Tract Infections and Other Infections of the Oral Cavity and Neck

Meningitis and Other Infections of the Central Nervous Systems

Infections of the Eyes ears and Sinuses

Infections of the Urinary Tract