title: [Use of nasal mupirocin for Staphylococcus aureus: effect on nasal carriers and nosocomial infections].
abstract: Staphylococcus aureus is the agent of community-acquired and nosocomial infections. Twenty to 35% of the population permanently carries it in the nose and oropharynx, and additional 50%, carries it intermittently. Topical calcium mupirocin is an antibacterial agent against Staphylococcus aureus recommended to eradicate nasal and hand colonization in patients and health care workers. The prevalence of nasal S. aureus was determined in patients undergoing cardiovascular surgery. In addition, the effect of mupirocine on the number of carriers and rate of nosocomial infections was evaluated. An experimental prospective study was undertaken with two groups of patients: one treated with mupirocin (n = 96), and the other without treatment (n = 95). Tests for presence of nasal S. aureus and nosocomial infections were conducted in all patients. A 34% prevalence of S. aureus carriers was found. A decrease of the prevalence was found in both treated (87%) and untreated patients (33%), but in significantly different proportions (p = 0.0002, RR = 0.22, 95%CI = 0.09-0.054). This result demonstrated the effectiveness of a mupirocin treatment program to decrease numbers of nasal carriers. With regard to nosocomial infection, S. aureus prevalence was 3.6%, occurring mostly in control patients (6 of 7). Total nosocomial infection prevalence was 17.3%, evenly distributed in treated and untreated patients. This suggested that mupirocin use did not decrease the number of nosocomial infections.
authors.affiliation: Laboratorio de Biología Molecular, Clínica Cardiovascular Santa María, Medellín, Colombia. agarcia@cib.org.co
authors.forename: Ana María
authors.initials: AM
authors.lastname: García
authors.forename: María Virginia
authors.initials: MV
authors.lastname: Villa
authors.forename: María Elena
authors.initials: ME
authors.lastname: Escudero
authors.forename: Patricia
authors.initials: P
authors.lastname: Gómez
authors.forename: Margarita M
authors.initials: MM
authors.lastname: Vélez
authors.forename: María Isabel
authors.initials: MI
authors.lastname: Múnera
authors.forename: Gloria
authors.initials: G
authors.lastname: Franco
mesh_terms: D000281:Administration, Intranasal; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000008:administration & dosage*; D019072:Antibiotic Prophylaxis / Q000379:methods; D002353:Carrier State / Q000188:drug therapy / Q000453:epidemiology*; D003428:Cross Infection / Q000188:drug therapy* / Q000517:prevention & control; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016712:Mupirocin / Q000008:administration & dosage*; D009297:Nasal Mucosa / Q000382:microbiology; D009666:Nose / Q000382:microbiology; D015995:Prevalence; D011446:Prospective Studies; D013203:Staphylococcal Infections / Q000188:drug therapy* / Q000517:prevention & control; D013211:Staphylococcus aureus / Q000302:isolation & purification*
chemical_list: D000900:Anti-Bacterial Agents; D016712:Mupirocin