Treatment Duration for Catheter-Associated Urinary Tract Infections (CAUTI)

General Treatment Recommendations

The Infectious Diseases Society of America recommends that patients with catheter-associated urinary tract infections who have prompt resolution of symptoms should be treated for 7 days, while those with a delayed response should be treated for 10-14 days, regardless of whether the patient remains catheterized or not 1, 2
If an indwelling catheter has been in place for ≥2 weeks at the onset of CAUTI and is still indicated, the catheter should be replaced before starting antimicrobial therapy to hasten symptom resolution and reduce the risk of subsequent infection 1
A urine specimen for culture should be obtained prior to initiating antimicrobial therapy due to the wide spectrum of potential infecting organisms and increased likelihood of antimicrobial resistance 1
For patients with CAUTI who are not severely ill, a 5-day regimen of levofloxacin may be considered as an alternative to the standard 7-day regimen 1
A 3-day antimicrobial regimen may be considered for women aged ≤65 years who develop CAUTI without upper urinary tract symptoms after an indwelling catheter has been removed 1

For patients with catheter-related gram-negative bacteremia with nontunneled central venous catheters and no evidence of complications, appropriate antimicrobial therapy should be administered for 10-14 days 4
For patients with indwelling urinary catheters or urethral stents, use renally excreted antibiotics together with change of the catheter or stent 5
Antibiotic selection should be guided by culture results and local resistance patterns, with consideration for drugs with good urinary penetration 1, 2

The urinary catheter should always be discontinued as soon as appropriate 1
Replacing the catheter with a new one before starting antibiotics can decrease polymicrobial catheter-associated bacteriuria, shorten time to clinical improvement, and lower rates of CAUTI recurrence within 28 days after therapy 3

Treating asymptomatic bacteriuria in catheterized patients is not recommended as it does not reduce subsequent CAUTI and may increase antimicrobial resistance 3
Failing to obtain cultures before initiating antibiotics may lead to inappropriate antibiotic selection given the high likelihood of resistant organisms 2

Treatment failure manifesting as persistent fever, persistent positive blood culture results, or relapse of infection after antibiotics have been discontinued is a clear indication for removal of the catheter if it is still in place 4