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Infectious Disease > 124 Skin Infection > Flashcards

124 Skin Infection Flashcards

1
Q 
43M with cellulitis  of the right leg, presents with  with decreased sensorium. PE BP 90/60 mmHg, HR 124, RR 24/min. He is allergic to beta lactam antibiotics,. What antibiotic regimen will you give?
A. Amikacin+ clindamycin
B. Aztreonam + ciprofloxacin
C. Levofloxacin + vancomycin
D. Linezolid + clindamycin
A

D. Linezolid + clindamycin

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2
Q

Zoster common affects what types of person

A

Elderly

Immunosuppressed

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3
Q

Herpes in head and neck of young wrestlers

A

Herpes gladiatorum

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4
Q

Herpes in digits of health care workers

A

Herpetic whitlow

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5
Q

DNA virus that infects fingers of workers around goats and sheep

A

Orf

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6
Q

Papule with central vesicle that evolves to form 1 to 2.5 cm painless crusted black eschar with an erythematous halo and proximal adenopathy after a mite bite

A

Rickettsialpox of Rickettsia akari

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7
Q

Differentiates SSSS from Ten on punch biopsy

A

Cleavage plane
SSSS: stratum corneum
TEN: stratum germinativum

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8
Q

Most common cause of localized folliculitis

A

Staph Aureus

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9
Q

Causative agent of raised erythematous nodules in patient who under went tattooing

A

Mycobacterium chelonei

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10
Q

Causative agent of raised erythematous nodule in patient who underwent cosmetic laser surgery

A

Mycobacterium abscessus

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11
Q

Raised serpiginous or linear eruptions caused by burrowing larvae of dog or cat hookworms; acquired through contact with soil contaminated by dog or cat feces

A

Ancylostoma braziliense

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12
Q

Nodules measuring 1-10 cm occurring in persons bitten by Simulium files in Africa. Migration of microfilariae into the eyes can cause blindness

A

Onchocerca volvulus

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13
Q

Condition can take a form of single gigantic lesions or multiple small lesions transmitted to humans by sandfly Phlebotomus

A

Bartonella bacilliformis

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14
Q

Begins as pruritic papuks that develops within days into an ulcer with surrounding vesicle and edema and then into an enlarging ulcer with black eschar

A

Cutaneous anthrax

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15
Q

Due to tissue hypoxemia secondary to pressured induced vascular insufficiency and may become secondarily infected with components of the skin and gastrointestinal flora

A

Decubitus ulcer

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16
Q

Characterized by abrupt onset of fiery red swelling of the face or extremities; well defined indjrsted margins, particularly along the nasolabial folds, rapid progression and intense pain. What is the causative agent

A

Erysipelas. S. Pyogenes

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17
Q

Acute inflammatory condition of the skin that is characterized by localized pain, Erythema, Swelling and heat

A

Cellulitis

18
Q

Pathogen of cellulitis that spreads from central localized infection such as abscess, folliculitis or an infected foreign body

A

Purulent cellulitis caused by S. Aureus

19
Q

Pathogen of cellulitis that rapidly spreading, diffuse process frequently associated with lymphangitis and fever

A

Nonpurulent cellulitis caused by S. Pyogenes

20
Q

Cellulitis caused by cat bites

A

Pastuerella multocida

21
Q

Pastuerella is notoriously resistant to what but sensitive what?

A

Resistant: dicloxacillin, nafcillin
Sensitive: beta lactams, quinolones, tetracycline and erythromycin

22
Q

Good choices for treatment of animal or human bite infections

A

Amoxicillin- clavulanate
Ampicillin sulbactam
Cefoxitin

23
Q

Causes agressive cellulitis and occasionally Necrotizing Fasciitis in tissues surrounding lacerations sustained in freshwater

A

Aeromonas hydrophila

24
Q

Three soft tissue infection caused by P Aeruginosa

A

Ecthyma gangrenosum in neutropenic patients
Hot tub folliculitis
Cellulitis following penetrating injury

25
Q

Cellulitis among bone renderer and fishmonger caused by a gram. Positive aerobic rod

A

Erysipelothrix rhusiopathiae

26
Q

Pathogen that produce Panton-Valentine-Leukocidin (PVL) toxin and cause Necrotizing Fasciitis

A

MRSA

27
Q

MRSA infection that spread to perineal area

A

Fourniers gangrene

28
Q

Severe muscle pain is a hallmark of what infective agents

A

Coxsackievirus B

Trichinellosis

29
Q

Causative agent of traumatic gangrene

A

Clostridium perfringens, septicum, histolyticum

30
Q

Causative agent of gas gangrene of the uterus after illegal abortion or self induced abortion

A

Clostridium sordellii

31
Q

Causative agent for spontaneous nontraumatic gangrene among patients with neutropenia, GI malignancy, diverticulosis and recent radiation to the abdomen

A

C. Septicum

32
Q

Best way to determine extent and severity of infection and to obtain Gram staining and culture

A

Open Surgical inspection with debridement

33
Q

Primary and alternative treatment. Early animal bite

A

P: co amoxiclav
A: doxycycline

34
Q

Primary and alternative treatment. Animal bite with established infection

A

P: ampicillin sulbactam
A: Clindamycin + ciprofloxacin /cefoxitin

35
Q

Primary and alternative treatment. Bacillary angiomatosis

A

P: erythromycin
A: doxycycline

36
Q

Primary and alternative treatment. Herpes simplex

A

P: acyclovir 400 mg TID x 10 days
A: famciclovir, valacyclovir

37
Q

Primary and alternative treatment. Herpes zoster. Immunocompetent. More than 5 years old.

A

P: acyclovir 800.mg 5x a day
A: famciclovir, valacyclovir

38
Q

Primary and alternative treatment. Cellulitis

A

P: nafcillin, oxacillin
A: ampicillin sulbactam or cefazolin or erythromycin or Clindamycin

39
Q

Primary and alternative treatment. MRSA skin infections

A

P: Vancomycin
A: linezolid

40
Q

Primary and alternative treatment. Necrotizing Fasciitis. Group A strep

A

P: Clindamycin + Pen G
A: Clindamycin + first or second gen cephalosporins

41
Q

Primary and alternative treatment. Necrotizing Fasciitis. Mixed aerobes and anaerobes

A

P: ampicillin+ clindamycin+ ciprofloxacin
A: Vancomycin + Metronidazole + ciprofloxacin

42
Q

Primary and alternative treatment. Gas gangrene

A

P: Clindamycin + Pen G
A: Clindamycin + cefoxitin

Infectious Disease (8 decks)

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