NON-LACTOSE FERMENTING GRAM NEGATIVE RODS Flashcards
motile
OXIDASE (-)
H2S producer
Salmonella spp
nonmotile
OXIDASE (-)
H2S non producer
Shigella spp
swarming
OXIDASE (-)
H2S producer
UREASE
Proteus mirabilis
H2S non producer
OXIDASE (+)
obligate aerobe
Pseudomonas aeruginosa
ENTEROCOLITIS
-invasion of the epithelial and subepithelial tissue of the small and large intestines
S. enteritidis/S. typhimurium
TYPHOID FEVER
-d.t. Vi (virulence) capsular antigen
- organisms enter, multiply in the PEYER PATCHES and spread in reticuloendothelial system
- predilection for invasion of the GALLBLADDER – chronic carrier state
- FEVER and BRADYCARDIA (pulse fever disproportion)
- ROSE SPOTS
S. typhi
Septicemia
- bacteremia results in the seeding of many organs
- MC sequelae - osteomyelitis, pneumonia and meningitis
S. choleraesuis
-commonly in patients w/ SICKLE CELL ANEMIA or cancer
incubation period - 12-48 hrs
nausea and vomiting – abdominal pain and nonbloody diarrhea
Enterocolitis
Culture Source (Typhoid Fever) - WEEK 1 *stepwise fever, anorexia, malaise, relative bradycardia and bacteremia
BLOOD
bone marrow
Culture Source (Typhoid Fever) - WEEK 2
*abdominal pain, bloating, constipation, ROSE SPOTS, hepatosplenomegaly, jaundice
URINE
rose spots
bone marrow
Culture Source (Typhoid Fever) - WEEK 3
- bleeding ileitis - ulceration in hyperplastic follicles
- pneumonia
STOOL
bone marrow
Culture Source (Typhoid Fever) - WEEK 4
*recovery or death
bone marrow
POST - chronic carrier state
BILE
stool
bone marrow
Treatment for Uncomplicated Typhoid Fever
Ampicillin
Amoxicillin
Treatment for Complicated Typhoid Fever
Ceftriaxone