Ch21 Flashcards

All of the following are normal microbiota of the skin EXCEPT

-Streptococcus.

-Staphylococcus.

-Corynebacterium.

-Micrococcus.

-Propionibacterium.

An eight-year-old girl has scabs and pus-filled vesicles on her face and throat. Three weeks earlier she had visited her grandmother who had shingles. What infection does the eight-year-old have?

-fever blisters

-chickenpox

-measles

-scabies

-rubella

Which of the following is NOT true of acne?

-Mild cases are treated with topical agents.

-Antibiotics may be prescribed for moderate cases.

-Drugs that inhibit sebum formation are useful in treating inflammatory acne.

-It is often due to the action of Propionibacterium.

-It can be treated by eliminating fatty foods from the diet.

Warts are caused by poxvirus.

-parvovirus.

-Staphylococcus aureus.

-papillomavirus.

-herpesvirus.

All of the following are characteristic of Pseudomonas aeruginosa EXCEPT

-growth in moist environments.

-production of pyocyanin.

-gram-positive cell wall.

-resistance to many types of disinfectants and antibiotics.

-rod-shaped.

Koplik spots are a diagnostic indicator of -fifth disease. -rubella. -measles. -chickenpox. -smallpox.

All of the following are transmitted via the respiratory route EXCEPT -tinea. -rubella. -measles. -chickenpox. - smallpox.

All of the following are protective factors of the skin and its secretions EXCEPT -pyocyanin production. -salt. -lysozyme production. -keratin. -tightly packed cells.

Thrush and vaginitis are caused by -herpesvirus. -Staphylococcus aureus. -Chlamydia trachomatis. -Candida albicans. -Streptococcus pyogenes.

The greatest single cause of blindness in the world is -neonatal gonorrheal ophthalmia. -keratoconjunctivitis. -inclusion conjunctivitis. -trachoma. -pinkeye.

All of the following are characteristic of the Group A beta-hemolytic streptococci EXCEPT -the ability to dissolve blood clots. -M proteins. -hyaluronidase production. -the ability to damage cell membranes. -methicillin resistance.

Which of the following cause(s) ringworm? -Mycobacterium -Microsporum Epidermophyton and Mycobacterium -Microsporum -Microsporum and Epidermophyton -Epidermophyton

Newborns' eyes are treated with an antibiotic -when the mother has genital herpes. -when Neisseria gonorrhoeae is isolated from the eyes. -when the mother is blind. -when the mother has gonorrhea. -as a routine precaution.

A possible complication of chickenpox is -subacute sclerosing panencephalitis. -encephalitis. -congenital rubella syndrome. -fever blisters. -macular rash.

Which of the following is a subcutaneous mycosis? -athlete's foot -tinea capitis -sporotrichosis -Buruli ulcer -erysipelas

Which region of the skin supports the largest bacterial population? -forearms -scalp -feet -armpits -All of these support similarly sized bacterial populations.

Staphylococcus aureus is responsible for all of the following EXCEPT -acne. -boils. -pimples. -sties. -carbuncles.

Exfoliative toxin is responsible for -scalded skin syndrome. -otitis externa. -fever blisters. -impetigo. -thrush.

All of the following are causative agents of conjunctivitis EXCEPT -Chlamydia trachomatis. -Haemophilus influenzae. -adenovirus. -herpes simplex. -Neisseria gonorrhoeae.

In which of the following respects is measles similar to German measles (rubella)? -They are caused by the same virus. -They can be controlled by vaccination. -Congenital complications may occur. -They have a similar type of rash. -Encephalitis is a possible complication.

Why is vaccination for rubella recommended? -It is no longer recommended rubella has been eradicated. -There is a high incidence of congenital infections and birth defects. -Health care workers have a high incidence of infection. -It has a high mortality rate in school-age children. -Death from secondary infections is common.

Which of the following statements about congenital rubella syndrome is FALSE? It does not occur with subclinical infections. -It can be prevented by vaccinating women prior to pregnancy. -It may be fatal to the unborn child. -It is contracted during the first trimester of pregnancy. -It may result in deafness blindness and mental retardation.

Which of the following are incorrectly matched? -parvovirus – fifth disease -herpes zoster – shingles -HHV-6 – roseola -varicella-zoster – chickenpox -poxvirus – fever blisters

Which of the following is NOT caused by HSV-1? -herpes whitlow -canker sores -cold sores -herpes encephalitis -herpes gladiatorum

Which of the following statements about Reye syndrome is FALSE? -It is a complication that may occur in chickenpox infection. -Symptoms may include vomiting drowsiness or behavior changes. -It mostly affects older adults. -Prolonged neurological problems may occur. -It is associated with aspirin use.

The eradication of smallpox was possible because -it occurs only in the tropics. -insect vectors were eliminated. -there are no animal reservoirs of the virus. -it was a relatively mild disease. -it can be prevented with the same vaccine used to prevent chickenpox.

Which of the following is used to treat herpetic keratitis? -trifluridine -penicillin -fungicide -sulfonamide -acyclovir

Which of the following is used to treat shingles? -penicillin -acyclovir -trifluridine -sulfonamide -fungicide

Which of the following is used to treat sporotrichosis? -acyclovir -oral potassium iodide -trifluridine -penicillin -sulfonamide

Which of the following is used to treat candidiasis of the skin or mucous membranes? -acyclovir -trifluridine -penicillin -miconazole -sulfonamide

Scabies is a skin disease caused by a -prion. -mite. -slow virus. -bacterium. -protozoan.

Scabies is transmitted by soil. fomites. food. water. respiratory secretions.

A patient has pus-filled vesicles and scabs on her face throat and lower back. She most likely has -measles. -rubella. -chickenpox. -smallpox. -mumps.

Furuncles toxic shock syndrome and scalded skin syndrome all are caused by -Staphylococcus aureus. -Pseudomonas aeruginosa. -Candida albicans. -Propionibacterium acnes. -Streptococcus pyogenes.

Buruli ulcer is caused by -a fungus. -a mite. -a virus. -acid-fast bacteria. -gram-positive bacteria.

The patient has a papular rash. Microscopic examination of skin scrapings reveals small eight-legged animals. The etiology is -Candida. -Microsporum. -Pseudomonas aeruginosa. -Staphylococcus aureus. -Sarcoptes.

The patient has vesicles and scabs over her forehead. Microscopic examination of skin scrapings shows gram-positive cocci in clusters. The etiology is -Candida. -Microsporum. -Pseudomonas aeruginosa. -Staphylococcus aureus. -Sarcoptes.

Question 38 0.1 / 0.1 pts The patient has scaling skin on his fingers. Conidiospores are seen in microscopic examination of skin scrapings. The etiology is -Candida. -Microsporum. -Pseudomonas aeruginosa. -Staphylococcus aureus. -Mycobacterium ulcerans.

A 45-year-old man has pus-filled vesicles distributed over his back in the upper right quadrant over his right shoulder and upper right quadrant of his chest. His symptoms are most likely due to -Streptococcus pyogenes. -Staphylococcus aureus. -Candida albicans. -herpes simplex virus. -varicella-zoster virus.

A 35-year-old woman has a red raised rash on the inside of her thighs. Gram-stained skin scrapings show large budding cells with pseudohyphae. The infection is caused by -Streptococcus pyogenes. -Staphylococcus aureus. -varicella-zoster virus. -herpes simplex virus. -Candida albicans.

Which of the following is incorrectly matched? -Haemophilus influenzae – pinkeye -Neisseria gonorrhea – opthalmia neonatorum -Acanthamoeba – keratitis -Pseudomonas – inclusion conjunctivitis -Chlamydia trachomatis – trachoma

Assume that your lab partner swabs the side of his face and uses the swab to inoculate a nutrient agar plate. The next day he performs a Gram stain on the colonies. They are gram-positive cocci. You advise him that he should next look for -conidiospores. -pseudopods. -a coagulase reaction. -an acid-fast reaction. -pseudohyphae.

Which of the following pairs is mismatched? -conjunctivitis – Chlamydia trachomatis -Buruli ulcer – Mycobacterium -keratitis – Acanthamoeba -chickenpox – poxvirus -otitis externa - Pseudomonas

A 17-year-old boy has pus-filled cysts on his face and upper back. Microscopic examination reveals gram-positive rods. This infection is caused by -herpes simplex virus. -Acanthamoeba. -Streptococcus pyogenes. -Staphylococcus aureus. -Propionibacterium acnes.

Which of the following is likely to spread MRSA among athletes? -physical contact -shared equipment -taping gels -whirlpool baths -All of the answers are correct.

Inflammation of the thin clear membrane lining the eyelid and eye is properly termed -trachoma. -keratititis. -conjunctivitis. -ophthalmia neonatorum. -whitlow.

You are examining a scraping of an infected cornea under the brightfield microscope and see eukaryotic cells. This is probably a case of -Trichiasis. -Trachoma. -Acanthomoeba keratitis. -Herpetic keratitis. -Ophthalmia neonatorum.

Which disease commonly leads to blindness in parts of the world but can be largely controlled through sanitary practices and health education? -Herpetic keratitis -Yaws -Buruli ulcer -Trachoma -Acanthomoeba keratitis

Which infectious agent causes conjunctivitis and may be contracted from non-chlorinated swimming pools? -Simplexvirus -Chlamydia trachomatis -Treponema pallidum -Neisseria gonorrhoeae -Haemophilus influenzae

A newborn infant develops a whitish overgrowth on the tongue and inner lips. This newborn is suffering from an infection with -Trichophyton. -Candida albicans -Acanthomoeba. -Pediculus humanus. -Sporothrix schenkii.