Empirical Treatment for Salvage Central Line Infections

Initial Empirical Antibiotic Selection

The American Society of Clinical Oncology recommends vancomycin as the first-line empirical treatment for suspected central line-related bloodstream infections before blood culture results are available 1, 3
Daptomycin can be used as an alternative in patients with higher risk for nephrotoxicity or in settings with high prevalence of MRSA strains with vancomycin MIC ≥2 μg/ml 1, 4
For patients with severe symptoms, add empirical anti-Gram-negative coverage with one of the following: fourth-generation cephalosporins 4, carbapenems 6, or β-lactam/β-lactamase combinations with or without an aminoglycoside [7] [1, 3]

For suspected fungal infections in critically ill patients, an echinocandin is recommended if risk factors are present, such as hematological malignancy 4, recent bone marrow or solid organ transplant 7, presence of femoral catheters 4, colonization with Candida species at multiple sites 7, or prolonged use of broad-spectrum antibiotics [4] [1, 8]
Fluconazole can be used if the patient is clinically stable, has had no exposure to azoles in the previous 3 months, and has low risk of C. krusei or C. glabrata colonization 1, 5, 7

When attempting catheter salvage, ALT should be used in addition to systemic therapy, with a treatment duration of 7-14 days 1, 5, 4
Dwell time should ideally be ≥12 hours and should not exceed 48 hours before reinstallation 1, 4

For Coagulase-negative Staphylococci, diagnosis should be based on more than one set of positive blood cultures, and attempt catheter salvage with systemic antibiotic therapy for 10-14 days plus ALT 1, 7
For Staphylococcus aureus, infections typically require catheter removal and systemic antibiotic therapy, but if salvage is attempted, ALT should be combined with systemic therapy for at least 4 weeks 1, 7

Catheter removal is indicated in situations such as severe sepsis 7, suppurative thrombophlebitis 7, endocarditis 7, tunnel infection 2, port abscess 2, bloodstream infection that continues despite 48-72 hours of adequate coverage 7, or infections with S. aureus, fungi, or mycobacteria [4] [1, 5]

For most salvaged catheter infections, 10-14 days of treatment is recommended after resolution of signs of infection 1, 4
If positive cultures persist 72 hours after catheter removal or when complications are present, 4-6 weeks of treatment is recommended 1, 7

Blood cultures should be obtained before starting antibiotic therapy, and the selection of antibiotics should be guided by antimicrobial susceptibility testing data 2, 9, 1, 5
Empiric antibiotic treatment should take into account the risk for drug-resistant strains, and adjust antibiotic treatment based on blood culture results 1, 6, 3