Cefotaxime–heparin lock prophylaxis against hemodialysis catheter- related sepsis among staphylococcus aureus nasal carriers

Abstract EN

Staphylococcus aureus nasal carriers undergoing hemodialysis (HD) through tunneled cuffed catheters (TCCs) form a high-risk group for the development of catheter-related bloodstream infections (CRBSI) and ensuing morbidity.

The efficacy of antibiotic-locks on the outcomes of TCCs among S.

aureus nasal carriers has not been studied earlier.

Persistent nasal carriage was defined by two or more positive cultures for methicillin-susceptible (MSSA) or methicillin-resistant (MRSA) S.

aureus of five standardized nasal swabs taken from all the participants dialyzed at a large out-patient HD center affiliated to a tertiary care hospital.

Of 218 participants, 82 S.

aureus nasal carriers dialyzed through TCCs (n = 88) were identified through April 2005 to March 2006 and randomized to two groups.

Group I comprised of 39 nasal carriers who had TCCs (n = 41) “locked” with cefotaxime / heparin while group II included 43 patients with TCCs (n = 47) filled with standard heparin.

The CRBSI incidence and TCC survival at 365 days were statistically compared between the two groups.

A significantly lower CRBSI incidence (1.47 vs.

3.44 / 1000 catheter-days, P < 0.001) and higher infection-free TCC survival rates at 365 days (80.5 vs.

40.4 %, P < 0.0001) were observed in the cefotaxime group compared with the standard heparin group.

However, no significant difference in MRSA-associated CRBSI incidence was observed between the two groups.

Cefotaxime-heparin “locks” effectively reduced CRBS Incidence associated with gram-positive cocci, including MSSA, among S.

aureus nasal carriers.

There remains a compelling requirement for antibiotic-locks effective against MRSA.