Urinary Tract Infection

Question 1

Criteria to diagnose asymptomatic bacteriuria

Answer 1

1. Presence of >100,000 CFU/mL of a single pathogen two successive clean catch urine cultures in a woman without symptoms
2. Presence of >100,000 CFU/mL on ONE clean-catch urine culture in asymptomatic men
3. Presence of 100 CFU/mL of a single isolate in a catheterized specimen in a patient without symptoms

Question 2

Definition of Recurrent UTI

Answer 2

2 uncomplicated UTI in 6 months OR
3 or mote uncomplicated UTI in the preceding 12 months

Question 3

Definition of Relapse of UTI

Answer 3

Recurrence of a UTI within 2 weeks of treatment completion caused by the same organism from a focus within the urinary system

Question 4

Definition of Reinfection UTI

Answer 4

Recurrent UTI caused by a different bacterial isolate OR
previously isolated bacteria after a negative intervening culture or a period of >2 weeks between infections

Question 5

Strongest behavioral risk factors for recurrent UTI in women

Answer 5

Frequence of sexual intercourse and use of diaphragm and spermicide

Question 6

Most common pathogen in UTI

Answer 6

E. coli

Question 7

Chlamydia infection should be suspected in the following settings:

Answer 7

1. A new sexual partner
2. A partner with urethritis
3. Examination findings of cervicitis or low-grade pyuria with no bacteria seen on urinalysis

Question 8

A WBC count of >____ cells/HPF in a centrifuged specimen from a symptomatic patient is considered abnormal

Answer 8

> 5 cells/HPF

Question 9

Imaging of choice for kidney/urethral stones or emphysematous pyelonephritis

Answer 9

CT

Question 10

In men, a residual volume of ______ predisposes to bacteriuria

Answer 10

> 180ml

Question 11

FIrst-line of choice for uncomplicated UTI

Answer 11

single dose of 3g of fosfomycin

Question 12

Treatment of choice for complicated cystitis or complicated pyelonephritis

Answer 12

Ciprofloxacin 500mg BID x 5-7 d OR
Levofloxacin 750mg OD x 5-7d

Question 13

Treatment of choice for urethritis (adult female)

Answer 13

Ceftriaxone 250mg IM plus Azithromycin 1g single dose or Doxycycline 100mg BID x 7 days

Question 14

First line treatment for asymptomatic bacteriuria for pregnant patients

Answer 14

Amoxicillin 500mg PO BID or TID for 3-7 days
Cephalexin 500mg BID-QID for 3-7 days

Question 15

Treatment for HIV patients with UTI

Answer 15

Floroquinolones (Cipro, Levo etc)

Question 16

Urine culture should be performed in the ff patients:

Answer 16

1. Complicated UTI
2. Pyelonephritis
3. Sepsis
4. Recent antimicrobial therapy

Question 17

Definition of CAUTI

Answer 17

Refers to a UTI occurring in a person whose urinary tract is currently catheterized, or has been within the previous 48 hours