Miscellaneous Quiz / urinary tract pathogens

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Can you name the urinary tract pathogens?

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Pathogens in complicated or nosocomial infections
Cx: beta-hemolysis on blood agar, bile resistant
Pili, capsule, endotoxin
Normal intestinal flora --> endogenous ascending infections
Pathogen(s): Motile, lactose (+), urease (-)
Cx: Alpha or no hemolysis on blood agar, resistant to 40% bile salts, 6.5% to NaCl, bacitracin, and optochin
Bladder or kidney infection associated with a condition that increases the risk of failing tx (MDR pathogen)
Bacteria in urine without s/s attributable to UTI
Gram (+) cocci in chains, catalase (-), lancefield's group B (GBS)
Cx: McConkey agar: lactose (-) white, swarming motility
Cx: McConkey agar: lactose (+) pink, mucoid colonies
Blue-green colonies, grows at 42C, fruity aroma, mucoid, fluorescent under UV light
Bladder or kidney infection in pt with underlying structural or functional abnormalities of the GU tract
Condition with common antimicrobial resistant organisms
Other gram (-) rods
VF: adhesin, toxins, and enzymes. All strains carry some drug resistance, some are vancomycin
Causes UTI in pregnant women and is the main cause of meningitis in neonates
Adhesins, capsule, endotoxin
Cx: McConkey agar. Lactose (+) pink
Pathogen(s): Swarming motility, lactose (-) urease (+)
10-20% of UTIs in sexually active young women (cystitis)
Environment colonizes skin and vaginal tract --> endogenous transmission
Normal intestinal flora and found in the environment --> endogenous and nosocomial infections
Pathogens in uncomplicated infections
Gram (+) cocci in clusters, catalase (+), coagulase (-)
Gram (+) cocci
Pathogen(s): Non-motile, lactose (+), urease (-)
Pathogen(s): Lactose (+) slowly, red pigments
Tx of acute uncomplicated cystitis
VF: capsule, peptidase, and hydrolytic enzymes
Found in the intestinal tract --> endogenous from medical procedure, nosocomial
Cx: Red pigment, distinctive brick-red colonies
Pili; capsule, endotoxin, extracellular enzymes and toxins, pigments (pyocyanin & pyoverdin or fluorescin)
Uncommon, can occur with severe pyelonephritis or following bacteremia from of site of infection
Ubiquitous in the environment and transient flora --> a variety of opportunistic infections
Gram (+) diplococci or short chains, catalase (-), lancefield's group D
ADHESINS: urease (higher pH, urinary stones --> chronic infections); endotoxin
Class of pathogens: Gram (-) rods, facultative anaerobes, ferment glucose, NITRATES (+), catalase (+), OXIDASE (-)
Gram(-) rods, motile, oxidase (+), adaptability to minimal nutritional requirements
ADHERENCE: P-pilus (pyelonephritis associated pilus); other adhesins (FimH). DAMAGE: hemolysin (pore forming LPS)
Bladder or kidney infection in healthy, young, nonpregnant women
Normal flora of the intestinal and upper respiratory tract that cause endogenous + nosocomial infections
Class of pathogens: Serologic classification O (always present), H (flagellar), and K (capsular)
Class of pathogens: LPS (lipopolysaccharide aka endotoxin), O antigen, Core polysaccharides (aka enterobacterial common antigen), lipid A (toxic part)
Cx: No hemolysis on blood agar, novobiocin resistant
Tx of acute uncomplicated pyelonephritis and complicated UTI
Upper respiratory and genitourinary tract flora --> endogenous infection

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