UTIs Flashcards
Most common organism causing UTI
E. coli
Risk factors for UTIs
Female, sex, indwelling catheters, pregnancy, diabetes, spinal cord injury
Male risk factors for UTIs
Uncircumcised, anal intercourse, vaginal intercourse w/ female colonized w/ uropathogens
What is absent in lower UTIs that is usually present in upper UTIs?
Fever
Dipstick urinalysis findings in UTI
+ leukocyte esterase, +nitrite
+ nitrite test for bacteria indicates what?
Sensitive and specific for enterobaceriaceae
Presence of what in clean catch urinalysis indicates vulvar or urethral contamination
Squamous (epithelial) cells
What do if you have squamous cells on urinalysis
Straight cath
When is a urine culture warranted?
If UTI symptoms are atypical, course is complicated, or symptoms persist despite antibiotics
Risk factors for upper UTI
Diabetes, vesicoureteral reflux, pregnancy
Treatment options for uncomplicated cystitis
Oral TMP/SMX (Bactrim) for 3 days, nitrofurantoin (5-7 days), fosfomycin (single dose), fluoroquinolones (cipro)
When should you NOT give nitrofurantoin or fosfomycin?
If you suspect early pyelonephritis
What can you give for symptomatic treatment of dysuria?
Phenazopyridine (urinary analgesic)
How to treat a preggar w/ UTI
Ampicillin, amoxicillin, or oral cephalosporins for 7-10 days
What should you avoid giving in pregnant woman with UTIs
Fluoroquinolones (cause fetal athropathy)
Difference in treating uncomplicated UTIs in men compared to women
Treat the same, but continue treatment for 7 days
Most frequent cause of pyelonephritis
E. coli
Complications of pyelonephritis
Sepsis, emphysematous pyelonephritis (gas-producing bacteria in diabetics), chronic pyelonephritis and scarring
Most important finding in urinalysis for diagnosing pyelonephritis
WBC casts (leukocyte casts)
Should you get urine cultures if you suspect pyelonephritis?
Yes
When should you get blood cultures in pyelonephritic pts?
If they are ill-appearing or septic
Treatment for uncomplicated pyelonephritis
TMP/SMX or a fluoroquinolone (cipro) for 10-14 days for GNRs; amoxicillin for gram positive cocci
What should you do if you suspect urosepsis?
Hospitalize the pt and give IV fluids
Antibiotic treatment in uroseptic pts
IV broad spec antibiotics (ampicillin plus gentamycin for ciprofloxacin)