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Microbiology Exam 2 > Ch. 19 - Skin and Wounds Part II > Flashcards

Ch. 19 - Skin and Wounds Part II Flashcards

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1
Q

Necrotizing fasciitis is caused by what?

A

Streptococcus pyogenes

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2
Q

Major symptoms of necrotizing fasciitis:

A

Destruction of muscle and fat tissue. (NECROSIS), SPREADS ALONG FASCIA, multiple organ failure

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3
Q

Mode of transmission for necrotizing fasciitis:

A

Person-to-person,

Enters through breaks in the skin.

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4
Q

Necrotizing fasciitis aka:

A

“flesh eating bacteria”

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5
Q

What is also key about necrotizing fasciitis?

A

Emerging disease

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6
Q

Necrotizing fasciitis is treated with antibiotic and often leads to ____?

A

amputation

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7
Q

Necrotizing fasciitis secretes ____ and ____ that destroy tissues. Involves ____ and failure of many organs.

A

Enzymes and toxins

toxemia

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8
Q

Necrotizing fasciitis has a _____ fatality

A

> 50%

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9
Q

Acne is cause by?

A

propionibacterium acnes

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10
Q

Propionibacterium is what kind of organism?

A

Bacteria (gram +)

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11
Q

Mode of transmission for acne?

A

Direct contact

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12
Q

What is the most sever form of acne?

A

Cystic acne

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13
Q

What is acne?

A

Infection of the hair follicle, sebaceous glands.

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14
Q

Propionibacteria are ______? Which makes them what?

A

Normal microbiota

opportunistic

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15
Q

Propionibacteria causes acne in ____ of adolescents and young adults.

A

85%

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16
Q

Long term tetracycline causes what?

A

photosensitivity

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17
Q

Mode of transmission for cat scratch disease/fever?

A

Cat scratches, licks, or bites

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18
Q

What causes cat scratch disease/fever?

A

bartonella henselae

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19
Q

What type of organism is bartonella henselae?

A

Bacteria (gram -)

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20
Q

What are symptoms of cat scratch disease/fever?

A

BUMP OR BLISTER at site of injury, lymphadenopathy.

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21
Q

At papule is a ___?

A

bump

22
Q

A pustule is a ____?

A

blister

23
Q

lymphadenopathy is what?

A

Lymph node swelling.

24
Q

What is the primary virulence factor for bartonella henselae?

A

endotoxin

25
Q

2/3 of burn victims develop this.

A

Pseudomonas infection

26
Q

pseudomonas infection is cause by what?

A

Pseudomonas aeruginosa

27
Q

What is the mode of infection for pseudomonas infections?

A

opportunistic

28
Q

What special thing does pseudomonas infection produce?

A

pyocyanin

29
Q

What is pyocyanin?

A

A blue green pigment that contributes to tissue matter.

30
Q

What are symptoms of pseudomonas infection?

A

Fever, chills, and the production of prudent matter in infected wounds.

31
Q

Rocky Mountain Spotted Fever (RMSF) is caused by what?

A

rickettsia ricketsii

32
Q

Rickettsia ricketsii is what type of organism?

A

Bacteria (gram -)

33
Q

Mode of transmission for RMSF?

A

Hard ticks vector

34
Q

What is key about RSMF?

A

Most severe and common Rickettsia illness

35
Q

What are signs and symptoms for RSMF?

A

Fever, headache, chills, muscle pain, nausea, vomiting, NON-ITCHY SPOTTED RASH on trunk and appendages, INCLUDING SOLES & PALMS; PETECHIA

36
Q

Why are pseudomonas infections difficult to treat?

A

multidrug resistance of pseudomonas aeruginosa.

37
Q

P. aeruginosa is widespread so prevention is _______ but infections typically don’t occur in ______.

A

Difficult

Healthy individuals.

38
Q

In RMSF ____ develop non-itchy rash and ___ developed petechiae.

A

90%

50%

39
Q

Majority of cases of RSMF occur in _______?

A

June and July, summer months

40
Q

Does anyone die with RSMF?

A

Yes, 5% die even with treatment.

41
Q

What is crucial in RSMF?

A

Early diagnosis

42
Q

Cutaneous anthrax is caused by?

A

Bacillus anthracis

43
Q

What type of organism is bacillus anthracis?

A

Bacteria (gram+)

44
Q

Mode of transmission for bacillus anthracis?

A

Direct contact

45
Q

What is key about cutaneous anthrax?

A

Category A bioterrorist threat

46
Q

Signs and symptoms of cutaneous anthrax?

A

Spreads to form painless, swollen, BLACK, CRUSTY ULCER (ESCHAR); released anthrax into blood, producing toxemia

47
Q

What is a painless, swollen, black, crusty ulcer called?

A

eschar

48
Q

Cutaneous anthrax is fatal in ____ of patients.

A

20%

49
Q

Bacillus anthracis can form what?

A

An endospore

50
Q

Is there a vaccine available for bacillus anthracis?

A

yes

51
Q

What is the removal window for ticks causing RMSF?

A

24 hour removal window -

24 hrs = increase %

52
Q

How to remove tick?

A

Special tool, remove close to head.

Microbiology Exam 2 (9 decks)

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