Skin and Soft tissue Infections Flashcards Preview

Infectious Disease > Skin and Soft tissue Infections > Flashcards

Flashcards in Skin and Soft tissue Infections Deck (23):
1

What is the common cause of impetigo?

Strep Pyo, Staph aureus

2

What is the common cause of Erysipelas?

Strep Pyo

3

What is the common cause of Folliculitis, furuncle?

Staph Aureus

4

What is the common cause of Cellulitis ?

Strep Pyo, Staph Aureus

5

What are the Primary Pyoderms?
Shallow to Deep

Impetigo
Folliculitis
Furuncles/Carbuncles
Erysipelas
Cellulitis
Necrotizing cellulitis/fasciitis
Chancriform/Chronic nodular lesions

6

What causes Hot tub folliculitis?
Treatment?

Pseudomonas
Spontaneous Resolution

7

What is the Treatment of Non-Purulent cellulitis (Superficial SSTI)

1. first gen cephalosporin,
2. anti staph penicillins
Risk for MRSA?

8

What is the common location of a carbuncle?

The back of the neck

9

What is the Treatment of Purulent Superficial SSTI

1. Vanco IV,
2. TMP-SMX,
3. Clindamycin,
DRAINAGE is KEY

10

What are the causes of Necrotizing Cellulitis/Fasciitis?

Clostridium Perfringens
GAS (Strep Pyo)
Polymicrobial Nec Fasc
MRSA

11

What are the clinical features of Nec Fasc?

Severe, Constant pain
Bullous Lesion
Systemic Toxicity- Mental Status
Gas in soft tissue
Rapid Spread

12

What are the sources of Clostridial Infection?

Tissue Trauma
Bacteremic Spread

13

What are the causes of Chancriform/Chronic Nodular Lesions?

Sporothrix
Mycobacterium
B. Anthracis
Francisella
Other: Nocardia, leishmania

14

What are the most common causes of Septic Arthritis?

Staph aureus Most Common
Staph Epi if prosthetic joint
Strep A and B
G- Bacteria
Eiknella- Human bite
Pasturella- Cat Bite

15

What are the clinical Features of Septic Arthritis?

Monoarticular 80-90%
Knee 50%
Fever in 60-80%
Focal Joint tenderness, inflamm, effusion, limited and painful motion

16

How is synovial Effusion Classified?

Normal: Clear, viscous 60k WBC

17

If a sexually active person has joint pain what is the probable cause?

Neisseria Gonnorhea
Do a Cervical swab and culture

18

What are the antibiotics used for Septic Arthritis?

N. Gonorrhea: 3G Ceph or Fluoro
S. Aureus: Nafcillin, 1G Ceph or Vanco
GAS: PCN or Ceph
G- : Ceph, Fluoro, Carbapenem
IV therapy for 2-4 weeks

19

What are the common causes of Contiguous Osteomyelitis?

Post-traumatic
Peripheral Neuropathy (step on)
Vascular insufficiency
Pressure Ulcers

20

How is Osteomyelitis Diagnosed?

Bone Probe***
Radiography
Nuclear Med scan
CT
MRI***
PET
Bone Biopsy***
Need to ID Microbe!!!

21

What is the most common cause of Puncture wound Osteomyelitis

Pseudomonas Aeruginosa

22

What is the Treatment of Acute Osteomyelitis?

Abtx
Surgical sampling
Debriedment

23

What is the Treatment of Chronic Osteomyelitis?

Surgical Debriedment
Antibiotics: Broad Spectrum