Examkin

Question

Difficulty: MediumInfection Control and Hospital-Acquired Conditions

A 74-year-old man is evaluated on the medical-surgical ward on hospital day 4. He was initially admitted to the intensive care unit for acute decompensated heart failure and required aggressive intravenous diuresis. An indwelling urinary catheter was placed at admission for strict monitoring of urine output. The patient has responded well to therapy and is now euvolemic. His intravenous diuretics have been transitioned to an oral regimen. He has no dysuria, suprapubic pain, or flank pain. Temperature is 37.0°C (98.6°F), blood pressure is 124/78 mm Hg, and pulse is 76/min. Physical examination reveals a soft, non-tender abdomen and no costovertebral angle tenderness. The nurse informs the physician that the patient's urine in the collection bag appears cloudy and has a strong odor. The nurse asks if a urine culture should be ordered. Which of the following is the most appropriate next step in management?

  1. A
    Obtain a urine sample from the catheter sampling port for culture and then remove the catheter
  2. B
    Initiate empiric oral antibiotic therapy and leave the catheter in place
  3. Remove the indwelling urinary catheter and observe the patient clinicallyAnswer
  4. D
    Remove the current catheter, insert a new catheter, and obtain a urine sample for culture
  5. E
    Perform continuous bladder irrigation with an antimicrobial solution

Answer

Remove the indwelling urinary catheter and observe the patient clinically.
The patient has asymptomatic bacteriuria, which is extremely common in patients with indwelling urinary catheters. The presence of cloudy or malodorous urine in a catheterized patient without systemic signs of infection (e.g., fever, altered mental status, hemodynamic instability) or localizing genitourinary symptoms (e.g., flank pain, pelvic discomfort) does not establish a diagnosis of a catheter-associated urinary tract infection (CAUTI). According to evidence-based infection control and antimicrobial stewardship guidelines, patients with asymptomatic bacteriuria should not have a urine culture sent and should not be treated with antibiotics, as this leads to inappropriate antimicrobial use and promotes resistance. The most important preventive measure to reduce CAUTI risk is the prompt removal of indwelling urinary catheters when they are no longer clinically indicated. Because the patient is euvolemic and has transitioned to oral diuretics, strict urine output monitoring is no longer necessary. Therefore, the catheter should be removed, and the patient should be observed without further testing.

Step-by-Step Solution

1
Evaluate the clinical indications for the indwelling urinary catheter.
The patient is euvolemic, transitioned to oral diuretics, and no longer requires strict intake and output monitoring.
Prompt removal of unnecessary catheters is the primary intervention for preventing hospital-acquired urinary tract infections.
2
Assess the patient for signs and symptoms of a urinary tract infection.
The patient is afebrile, hemodynamically stable, and lacks localizing genitourinary symptoms; the cloudy, malodorous urine represents asymptomatic bacteriuria.
Cloudy or foul-smelling urine without systemic or localizing symptoms does not meet the diagnostic criteria for a catheter-associated urinary tract infection (CAUTI).
3
Determine the appropriate diagnostic and management strategy.
Avoid ordering a urine culture and refrain from antibiotic administration.
Culturing asymptomatic patients leads to unnecessary antibiotic use, which increases adverse events and antimicrobial resistance.

Key Concept

In patients with indwelling urinary catheters, cloudy or malodorous urine in the absence of systemic or localizing signs of infection represents asymptomatic bacteriuria. The appropriate management is the prompt removal of the catheter if it is no longer clinically indicated, without sending a urine culture or prescribing antibiotics.
Rate this question

Topics

Infection Control and Hospital-Acquired Conditions

More questions from this topic