Exit-Site Erythema with Purulent Drainage on Day 9
A 44-year-old man with a tunneled central venous catheter for home parenteral nutrition presents on day 9 with a 2 cm area of erythema and induration at the exit site and a small amount of purulent drainage. He has a temperature of 38.4°C, chills, and mild hypotension (blood pressure 96/60 mmHg). Blood cultures drawn from the catheter are pending. The team debates whether to remove the catheter immediately, attempt salvage with antibiotics, or wait for culture results.
1. How would you classify this infection, and what does the classification imply for management?
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This is an exit-site infection with systemic signs, and the fever, chills, and hypotension raise concern for catheter-related bloodstream infection (CRBSI) or sepsis. The classification matters because:
- Exit-site infection alone (localized erythema, no systemic signs) can often be managed with local care and antibiotics while retaining the catheter.
- Tunnel infection or CRBSI generally requires catheter removal, especially with hemodynamic instability.
The presence of hypotension and chills shifts this out of the 'local infection' category and makes catheter salvage inappropriate until sepsis is addressed. The reasoning hinge is that systemic instability overrides the desire to preserve a valuable access line.
2. What immediate actions and cultures are indicated, and how do you handle the catheter?
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Immediate actions:
- Assess and stabilize - the patient meets sepsis criteria; obtain IV access (a peripheral line if available) and begin fluid resuscitation per sepsis protocol, and notify the responsible clinician urgently.
- Draw paired blood cultures - one set from the catheter and one from a peripheral vein - before starting antibiotics, plus a culture of the exit-site drainage.
- Start empiric broad-spectrum antibiotics promptly after cultures.
Catheter handling: given hypotension and suspected CRBSI, remove the catheter rather than attempt salvage; send the catheter tip for culture. Salvage with antibiotic lock therapy is reserved for uncomplicated, stable CRBSI with organisms amenable to lock therapy (e.g., coagulase-negative staphylococci) and is not appropriate in an unstable patient.
The judgment being tested is recognizing that a valuable line does not justify retention in a septic patient.