Effectiveness of the antibiotic lock therapy for the treatment of port-related enterococci, Gram-negative, or Gram-positive bacilli bloodstream infections.
OBJECTIVE
The purpose of this study is to evaluate the efficacy of antibiotic lock therapy to treat port-related enterococci, Gram-negative, or Gram-positive bacilli bloodstream infections.


METHODS
We conducted a prospective observational study including all patients with port-related bacteremia diagnosed at the Clinica Universitaria de Navarra, Pamplona, Spain. During a 36-month period, 110 patients were diagnosed with port-related bacteremia. Of these patients, 18 met criteria to be enrolled in the study. They were treated with a combination of systemic and antibiotic lock therapy (12-24 h/day during 7-14 days). Treatment effectiveness was assessed by clinical and microbiologic criteria.


RESULTS
Treatment was associated with clinical and microbiologic success in 88.8% of our patients (2/2 of the Propionibacterium acnes, 5/5 of the Corynebacterium spp., 6/7 of the Gram-negative bacillus, and 3/4 of the Enterococcus faecium port-related bloodstream infections). Mean increase of port life span for all patients after bacteremia was 288 days (range, 0-1403 days).


CONCLUSIONS
Antibiotic lock therapy combined with systemic antibiotics appears to be a safe and effective treatment of port-related bacteremia caused by enterococci, Gram-negative, or Gram-positive bacilli if the patient is stable and no septic syndrome is associated.
Del Pozo
Jose L
JL
Division of Infectious Diseases, Clínica Universitaria de Navarra, Pamplona, Spain. delpozo.jose@mayo.edu
Alonso
Marta
M
Serrera
Alicia
A
Hernaez
Silvia
S
Aguinaga
Aitziber
A
Leiva
Jose
J
D000293:Adolescent; D000328:Adult; D000368:Aged; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D016470:Bacteremia / Q000188:drug therapy* / Q000209:etiology / Q000382:microbiology; D002408:Catheters, Indwelling / Q000009:adverse effects* / Q000382:microbiology; D005260:Female; D006090:Gram-Negative Bacteria / Q000187:drug effects; D016905:Gram-Negative Bacterial Infections / Q000188:drug therapy* / Q000209:etiology; D006094:Gram-Positive Bacteria / Q000187:drug effects; D016908:Gram-Positive Bacterial Infections / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D016896:Treatment Outcome; D014640:Vancomycin / Q000627:therapeutic use
D000900:Anti-Bacterial Agents; D014640:Vancomycin