Resumen

VARGAS NARANJO, S. et al. Risk factors for development of intrahospitalary infections in burned patients. Hospital S. Juan de Dios, Costa Rica: January 2003-December 2005. Part II. Cir. plást. iberolatinoam. [online]. 2009, vol.35, n.4, pp.303-309. ISSN 1989-2055.

In burn victims, different factors such as age, gender and days of hospitalization among others, are influential in the development of inner-hospital infections (IHI). Due to a higher incidence of IHI in burn victims, it is pretended to identify which factors influence the presence and prediction of inner-hospital infections in the burned area (IHIBA). This study is a retrospective cohort that recruited 298 registries of medical reports from patients admitted into the National Burn Victims Unit at San Juan de Dios Hospital (NBVU-HSJD), Costa Rica, and following a previous report in this journal. The odds ratio (OR) were calculated for each risk factor in a univariated analysis, and defined as principal exposition variables were the total burn surface (TBS) and the depth of the burn (DB). It was deduced from this calculation that the type of accident did not show any association with IHIBA. Subsequently, a multivariate logistic not conditioned study was carried out, in which, the following risk factors were introduced: TBS, DB, age, number of burnt body segments (NBBS), days of hospital stay previous to the IHIBA (DHSP-IHIBA) and the burn's causing agent. Confusing and modifying variables of effect were also considered, respectively, for the NBBS and the DHSP-IHIBA. It was concluded that the main predicting variables for the IHIBA were TBS (OR=3.02; 1.20-7.84), DB (OR=11.44; 4.90-26.71), NBBS (OR= 2.80; 1.13-6.95), and DHS- IHIBA (9 to 14 days: OR=2.43; 0.52-11.29, > 19 days: OR=31.89; 2.17-467.68). Even though it didn't show statistical relevance, the age was introduced in the model, due to the fact that the risk factor increased with time (>64 years old: OR= 3.15; 0.61-16 29). It was concluded that burn victims present endogenous and exogenous characteristics for the development of the IHIBA and by getting to know those characteristics, we can help to lessen the incidence of IHIBA, promoting measures for its control and prevention in the treatment of the patients at the NBVU-HSJD.

Palabras clave : Burns; Nosocomial infection; Risk factors.

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