Class 6/5 Flashcards
describe impetigo and what pathogens cause it
maculopapular crusty lesion that is honey colored
staphylococcus and streptococcus
what differentiates staphylococcus and streptococcus
catalase
staph is catalase+
What are the most medically significant Gram + organisms
2 cocci: staphy and strep
4 bacilli
2spore: B anthracis, Clostridium spp
2 non spore: C diphtheria, L monocytogenes
Which species of staph is coagulase +
staph aureus
52 y/o lobar pneumonia, responding well to therapy
sudden onset fever, worsening conditions
necrotizing abscess formation in lung
best Dx?
staph aureus
What is another name of streptococcus agalactiae
Group B strep
multiple children with renal failure and hemolytic uremic syndrome and abdominal pain after consuming the same food
best Dx
E. coli
enterohemorrhagic
What are the forms of E coli
enterotoxigenic
enteroinvasive
enterohemorrhagic
what can lead to tumoremia in a hunter
skinning animal hides that aerosolizes
What is a zoonotic disease
not vector, directly from animal
what shape is borrelia burdorgferi
spirochete
classic CSF characteristics of acute bacterial meningitidis
turbid with increased P
decreased glucose
increased protein
neutrophils- polymorphonuclear
What are common pathogens of acute meningitis
Grp B strep E coli Listeria H influenza N meningitidis
how do you establish lymes Dx
serology titers
describe arthritis assoc with N gonorrheae
unilateral mono-articular
what are the main manifestations of spirochete infetions
endarteritis
lymphoplasmacytic infiltrates
partial left colectomy from recurrent diverticulitis
has fever that fails to responde to penicillin and cephalosporins
viscid diarrhea(mucous)
bacteroides fragilis
what type of diarrhea with campylobacter
bloody
baby that is breast feeding has low grade fever dry cough lethargic
low grade hepatitis
most likley
CMV
what is another name for strep pyogenes
group A beta hemolytic Strep
what causes strep throat
grou A beta hemolytic strep
7 y/o with sore throat, low grade fever and CBC with slight lymphocytosis
erythematous pharynx
aerobic cultures are negative
best Dx?
CMV
what viruses are responsible for common cold
rhinovirus
coronavirus
what viruses commonly cause diarrhea
calicivirus- norovirus
rotavirus
adenovirus
