staph diseases

Question 1

etiology of impetigo

Answer 1

staph aureus- assoc w/ bullous type

b hemolytic strep- assoc w/ crusted ulcerated type

Question 2

presentation

Answer 2

clear blister becomes pustular then erupts

leaves behind yellow crust

multiple and found on the face

Question 3

dg

Answer 3

gram stains (-ve)
swab

Question 4

dx

Answer 4

herpes
eczma
lice

Question 5

rx

Answer 5

severe- systemic flucloxacillin

mild-topical neomycin

Question 6

complications

Answer 6

toxic shoxk syndrome
soft tissue infec
acute glomerulonephitis

Question 7

what is erysipela

Answer 7

sujperficial type of celllulitis that extends to superficial lymphatics of skin

Question 8

aka of erysipela

Answer 8

st anthon’s fire d/2 assoc rash

Question 9

etio of erysipela

Answer 9

group A beta hemolytic strep

MRSA

Question 10

presentation

Answer 10

general
- fever .chills, malaise

face shows butterfly distro on cheeks and nose

umbillical or diaper region in infants

Question 11

describe lesion in erysipela

Answer 11

sharp raised border
bright red 
swollen an firm 
severe cases lead to
-blistering
-necrosis
-purpura from bleeding

Question 12

difference between cellulitis and erysipela

Answer 12

no swelling in cellulitis

Question 13

dg

Answer 13

characteristic rash
blood culture
elevated c reactive protein
mri and ct for deeper infection

Question 14

rx

Answer 14

IV penicilli 1st choice

10-14 days

Question 15

rx in cases of penicillin allergy

Answer 15

pristinamycin , roxamycin , erythromycin

Question 16

when is vancomycin used

Answer 16

facial erysipela caused by MRSA

Question 17

complications of erysipela

Answer 17

abscess
gangrane
post strep glomerulonephritis
strep tocix shock syndrome

Question 18

can ecthyma resolve

Answer 18

sometimes they remain fixed

other times ther reduce in size w/ / w/o rx

resolution leaves a scar

Question 19

what is charac of ecthyma

Answer 19

crusted sores w/ ulcers beneath them

Question 20

what is ecthyma

Answer 20

a deep form of impetigo that spreads to the dermis

Question 21

ecthyma causative agents

Answer 21

strept pyogenes (beta hemolytic) 
staph aureus

Question 22

ecthyma clinical presentation (descending from the waist)

Answer 22

sites affected 
bum
thighs
legs ankle 
feet

Question 23

description of ecthyma lesion

Answer 23

begins as small vesicle/pustule

gets covered by hard crust

crust removal shows red and swollen ulcer w/ pus

ulcer can enlarge to form sores

can spontaneously resolve to form a scar

Question 24

rx of ecthyma

Answer 24

local- topical fuscidic acid

systemic- oral penicillin / dicloxacillin

compression and removal of crust