Catheter-Related Bloodstream Infections: Diagnosis & Treatment
A clear guide to catheter-related bloodstream infections, a serious complication linked to central lines, dialysis catheters and other indwelling devices.
Treatment usually begins with
Blood Cultures
Targeted IV Antibiotics
Catheter Assessment
Close Monitoring
Treatment involves targeted IV antibiotics and assessing whether the catheter itself needs to be removed to fully clear the infection.
You may need this evaluated if...
A catheter-related bloodstream infection is suspected when these appear in a patient with an indwelling catheter or line:
- Fever or chills without another obvious source
- Redness, swelling or discharge at the catheter insertion site
- Symptoms worsening around the time the catheter is used
- A known indwelling catheter, central line or dialysis access
With prompt identification and treatment, including catheter removal when needed, most catheter-related infections resolve well.
What is Catheter-Related Bloodstream Infections?
Catheter-related bloodstream infections occur when bacteria enter the blood through a central line, dialysis catheter or other indwelling device, requiring targeted antibiotics and, often, removal of the catheter.
Linked to Indwelling Devices
Central lines, dialysis catheters and long-term IV access are the most common sources.
Catheter Removal Is Often Necessary
In many cases, the infected catheter must be removed to fully clear the infection.
Prompt Treatment Prevents Spread
Early antibiotics prevent the infection from spreading further in the bloodstream.
Careful Device Care Helps Prevent Recurrence
Proper catheter care reduces the risk of future infections.
Common Symptoms
- Fever or chills, especially around catheter use
- Redness, swelling or discharge at the insertion site
- Low blood pressure in more severe cases
- General unwellness without another clear cause
What Increases Your Risk
A combination of exposure, immune status and underlying health conditions can increase the likelihood of this infection.
How It Is Diagnosed
A structured assessment confirms the diagnosis and helps guide the right treatment plan.
Blood Cultures
Drawn from both the catheter and a separate vein to confirm the source of infection.
Catheter Site Examination
Checks for local signs of infection at the insertion point.
Catheter Tip Culture
If the catheter is removed, its tip may be cultured to confirm the diagnosis.
Complete Blood Count
Assesses the overall infection response.
Treatment Approaches
Medical Management
- Targeted IV antibiotics based on blood culture results
- Careful monitoring of catheter site and overall response
- Antibiotic lock therapy in select cases where the catheter is retained
- Close monitoring for signs of the infection spreading
Hospital-Based & Advanced Care
In most cases, the infected catheter is removed and, if still needed, a new one placed at a different site once the infection is controlled.
Treatment decisions are guided by culture results, severity and your overall health, not a single standard prescription.
Know When to Act
Recognising these signs early and acting promptly helps prevent serious complications.
Book an Assessment
Schedule a consultation for a routine evaluation or ongoing concern.
- Fever with an indwelling catheter, being evaluated for a possible infection
Seek Urgent Care
Reach out for emergency care immediately if you notice any of the following.
- High fever with chills, low blood pressure or confusion
Not Sure What You Need?
Speak to a Care Guide and we'll help you choose the right specialist.
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