UTIs Flashcards
UTI risk factors
Healthy, premenopausal women
Sexual behavior and contraceptive devices
Pregnancy
Male
Badly controlled DM
Transient short-term urinary tract catheter
Asymptomatic bacteriuria
Long-term urinary tract catheter treatment
Uncomplicated UTI
Normal urinary tract with normal voiding
Microbiology of uncomplicated UTI
Mostly E. coli
Complicated UTI
Congenital or acquired abnormality that prevents normal dispensing of bacteria from the urinary tract
Conditions for complicated UTI (disease states)
Pregnancy Uncontrolled DM Kidney transplant Urinary anatomical abnormalities Acute renal failure/chronic renal failure Immunocompromised Noscomial bacterial infections
Risk factors for complicated UTI
Lack of response to treatment, severity of illness, comorbidities like DM and immunosuppression
Clinical implication of complicated UTI (what are the risk factors?)
Recurrence, SIRS/sepsis, extensive antimicrobial resistance, immunosuppression, instrumentation/catheters
Microbiology of complicated UTI
Mostly E. coli and other GNR
Diagnosis of lower tract infection: cystitis
Urinalysis, urine gram stain and culture
Urinaylsis results that would suggest a UTI
Leukocyte esterase Nitrile Hematuria WBC casts Proteinuria Bacteria Pyuria
Diagnosis of upper tract infection: pyelonephritis
Also UA and urine gram stain and culture
Non-pharmacologic treatment for UTI
Don’t really work
Treatment for women with acute, uncomplicated cystitis
Nitrofurantoin for 5 days
Bactrim for 3 days
Treatment for subclinical pyelonephritis in women
PO therapy for 7-14 days
Subclinical pyelonephritis
No symptoms of an upper tract infection and they appear to have uncomplicated cystitis
Outpatient treatment of acute pyelonephritis in women
Ciprofloxacin PO for 7 days
Levofloxacin PO for 5 days
Bactrim PO for 14 days
Inpatient treatment of acute pyelonephritis in women
Extended-spectrum cephalosporin or penicillin +/- aminoglycoside for 10-14 days
Relapse in UTI
Infected with same organism
Treatment for UTI relapse
Extend treatment duration (up to 6 weeks)
Reinfection in UTI
Infected with different organism
Treatment for UTI reinfection
3-5 days with whatever ABX is recommended in the guidelines
Prostatitis in men: etiology
E. coli is the major pathogen
Presentation of cystitis in men
Younger: dysuria, frequency
More typical: elderly male with dysuria, frequency, fever, lower abdominal pain, possible bacteremia in severe cases
Presentation of pyelonephritis in men
Similar to presentation in women