Chapter 21 Flashcards Preview

Med Micro Exam 3 > Chapter 21 > Flashcards

Flashcards in Chapter 21 Deck (45):
1

What are some normal flora of the skin?

staphylococci, micrococci, corynebacteria, C. xerosis, propionibacterium acnes

2

What is the most significant bacteria involved in bacterial diseases?

G+ cocci bacteria

3

Staphylococcal Infections

G +, clusters hospital

4

What is a coagulase positive staphylococcal infection?

Staphlococcus aureus (Toxic Shock Syndrome)

5

What is a coagulase negative staphylococcal infection?

Staphlococcus epidermids

6

Staph aureus

coagulase, toxin, leukocidin

7

Toxic Shock Syndrome causes depletion of what?

Magnesium

8

What is Group A (B. hemolytic) streptococci?

Flesh eating bacteria; 40% fatal; produces Exotoxin A; often in people with weakened immune system

9

Strep. pyogenes (scarlet fever) causes _________ toxins.

erythrogenic

10

What symptoms do Erysepelas cause?

fever, skin rashes, sore throat

11

What is Necrotizing Fascitis?

flesh eating bacteria

12

What is Pseudomonas?

aerobic G- bacteria often found in water, soil, moist environments

13

Where is Pseudomonas dermatitis found?

in swimming pools and saunas; can cause hair follicle infection

14

What is Otitis externa?

a skin infection in burn patients

15

___% of cystic acne is found in teen years.

85%

16

What causes cystic acne?

the passage of sebum in blocked rupture of the lining of hair follicles

17

What does Propionibacterium acne do?

metabolizes sebum, causes inflammation, causes tissue damage, causes scarring.

18

How can Propionibacterium acne be treated?

With benzoyl peroxide or Tetracycline

19

What is Papillomavirus? How is it transmitted?

a DNA virus that causes warts; most commonly transmitted through sexual contact

20

How can Papillomavirus be treated?

With Cryotherapy (Liquid N2 at -190 degrees), duck tape therapy, laser surgery

21

What is small pox? How is it transmitted?

a DNA virus; eradicated; transmitted through respiratory

22

What is chicken pox? transmission?

an enveloped DNA virus; transmitted through respiratory

23

What is viral latency?

when a virus remains latent in your system (can even remain latent for decades), and then is reactivated. (such as chicken pox to shingles many decades later)

24

There is a ___% infection rate for HSV-1.

90%

25

Measles is highly contagious and can lead to________________.

pneumonia and even death

26

What is the route of transmission for measles?

respiratory

27

A person who has contracted measles is __________ even before symptoms appear.

infectious

28

What are symptoms of Measles?

fever, headache, cough, rash in face, trunk, extremeties, oral mucosa.

29

The rash seen with Measles is similar to the rash seen in _________________.

Rocky mountain spotted fever

30

What is Rubella?

a Rogavirus; RNA virus.

31

What are symptoms of Rubella? how is it transmitted?

small red spots, rash, fever; respiratory route.

32

Rubella can pass to an unvaccinated _________, causing serious birth defects.

pregnant woman

33

What is Fifth Disease (Erythema Infectiosum) caused by?

Parvovirus-B19; can cause abortion in unvaccinated women.

34

What is Dermatophyte?

a fungal disease in hair, nails, epidermis

35

What are the two Genuses in ringworm infection?

Microsporum and Trichophyton

36

Microsporum and Trichophyton are _________.

zoonotic

37

How is ringworm transmitted?

direct or indirect contact

38

What medicines are used to treat ringworm?

miconazole , clotrinazole, griseofulvin.

39

Name 3 subcutaneous mycosis diseases.

1. sporotricosis
2. candidiasis
3. scabies

40

How is sporotricosis gotten?

from the soil

41

How is sporotricosis treated?

with Potassium iodide and Amphoterecin-B

42

What are two things candidiasis can cause?

chronic vaginitis and newborn oral thrush

43

What medicines can treat candidiasis?

nystatin, miconazole, clotrimazole

44

What is neomatal gonorrheal opthalmia?

a disease in the eye of newborns caused by the transmission of nisseria gonnorhea from the mother during birth; all babies are given eyedrops at birth to prevent this.

45

What can Chlamydia trachomatis cause?

scarring of the cornea; blindness