A nurse is caring for a client who has an infection caused by Streptococcus pyogenes. The nurse understands that this microorganism belongs to what group of bacteria?

Gram-positive cocci

Gram-negative cocci

Gram-positive bacilli

Gram-negative bacilli

Answer and Explanation

The Correct Answer is A

Choice A reason:

Gram-positive cocci are bacteria that have a spherical shape and stain purple with Gram stain due to their thick peptidoglycan cell wall. Streptococcus pyogenes is an example of gram-positive cocci that can cause infections such as pharyngitis, impetigo, cellulitis, necrotizing fasciitis, or rheumatic fever.

Choice B reason:

Gram-negative cocci are bacteria that have a spherical shape and stain pink with Gram stain due to their thin peptidoglycan cell wall and outer membrane. Neisseria gonorrhoeae and Neisseria meningitidis are examples of gram-negative cocci that can cause infections such as gonorrhea, meningitis, or septicemia.

Choice C reason:

Gram-positive bacilli are bacteria that have a rod-shaped shape and stain purple with Gram stain due to their thick peptidoglycan cell wall. Bacillus anthracis and Clostridium botulinum are examples of gram-positive bacilli that can cause infections such as anthrax, botulism, or tetanus.

Choice D reason:

Gram-negative bacilli are bacteria that have a rod-shaped shape and stain pink with Gram stain due to their thin peptidoglycan cell wall and outer membrane. Escherichia coli and Pseudomonas aeruginosa are examples of gram-negative bacilli that can cause infections such as urinary tract infection, wound infection, or sepsis.

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Correct Answer is B

Explanation

Choice A reason:

This is an incorrect answer because an induration of 5 mm or more is considered a positive reaction only for certain high-risk groups, such as people who are HIV-positive, have recent contact with a person with active tuberculosis, or have chest radiograph findings consistent with prior tuberculosis.

Choice B reason:

This is a correct answer because an induration of 10 mm or more is considered a positive reaction for most people, including those who are recent immigrants from high-prevalence countries, injection drug users, residents or employees of high-risk settings, children younger than 4 years old, or people with certain medical conditions that increase the risk of tuberculosis.

Choice C reason:

This is an incorrect answer because an induration of 15 mm or more is considered a positive reaction only for people who have no known risk factors for tuberculosis.

Choice D reason:

This is an incorrect answer because an induration of 20 mm or more is not a criterion for a positive reaction, as it exceeds the maximum threshold for any group.

A. Hydrocolloid dressing B. Transparent film dressing C. Calcium alginate dressing D. Hydrogel dressing

Correct Answer is A

Explanation

Choice B reason:

Transparent film dressing is a type of dressing that consists of a thin sheet of polyurethane with an adhesive coating. It allows oxygen and moisture vapor to pass through but prevents bacteria and water from entering the wound. It is suitable for wounds with minimal drainage, such as superficial abrasions or donor sites.

Choice C reason:

Calcium alginate dressing is a type of dressing that consists of fibers derived from seaweed that form a gel-like substance when they come in contact with wound exudate. It absorbs large amounts of drainage and supports autolytic debridement of necrotic tissue. It is suitable for wounds with heavy drainage, such as pressure ulcers or venous ulcers.

Choice D reason:

Hydrogel dressing is a type of dressing that consists of water or glycerin-based gel that provides moisture to dry wounds and supports autolytic debridement of necrotic tissue. It is suitable for wounds with minimal to moderate drainage, such as partial-thickness burns or radiation injuries.

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A nurse is caring for a client who has an infection caused by Streptococcus pyogenes. The nurse understands that this microorganism belongs to what group of bacteria?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is B

Explanation

A nurse is caring for a client who has an open abdominal wound with moderate drainage. Which of the following types of dressings should the nurse use to promote moist wound healing?

Correct Answer is A

Explanation

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