Lecture 30 - Skin and Wound Infections Flashcards
4 diseases caused by Staphylococcus
- furuncle
- folliculitis
- bullous exfoliation
- toxic shock syndrome
Catheters and implants can lead to infections because of _________
biofilms
MRSA, what is it and what can be done?
Methicillin resistant staphylococcus aureus
treatment is based on strict hygiene and isolating carriers
3 infections caused by Streptococcus pyogenes
- erysipelas
- cellulitis
- impetigo
Why should Strep infections be treated quickly?
can result in necrotizing fasciitis
keep from spreading to more people
What are four major at-risk groups for Pseudomonas infections?
- infections in wounds and burns
- lung infections in cystic fibrosis patients
- Lasik eye surgery
- nosocomial UTI after catheter
What is the role of R plasmids and biofilms in Pseudomonas infections?
R plasmids carry antibiotic resistance
biofilms make treatment difficult
What are the symptoms of Lyme disease?
expanding bull’s eye rash
Why does Lyme disease need to be treated?
can lead to heart conduction abnormalities and arthritis
What is the function of tetanus toxin? What two agents are in the tetanus shot?
AB toxin where A inhibits release of neuroinhibitors
Penecillin and Tetanus Immune Globulin
How does gangrene destroy tissue? What can be done to treat it?
extracellular enzyme secretion destroy tissue (alpha toxin)
antibiotics
hyperbaric O2 chamber
Symptoms of Pasteurella infections
local or disseminated edematous abscess
snuffles in rabbits
Describe the etiology of cat-scratch disease
cat fleas transmit between cats
What two diseases are caused by Varicella-Zoster Virus, and how can it be prevented?
chickenpox, shingles
vaccination
measles (rubeola) vs German measles (rubella)
fever, runny nose, fine red macular rash
slight fever, mild symptoms (can cross placenta)
