[Prophylactic antibiotherapy in hip arthroplasty. Cohort study]. / Antibioterapia profiláctica en la artroplastia de cadera. Estudio de cohortes.

OBJECTIVE: The surgical site infection is the main cause of nosocomial infection in surgical patients, being antibiotic prophylaxis one of the most important factors for preventing it. This study evaluates adequacy of antibiotic prophylaxis in hip arthroplasty surgery as well as its effect on preventing surgical site infection. METHODS: A prospective cohort study was carried out from January 2011 to December 2016. We assessed the degree of adequacy of antibiotic prophylaxis in hip arthroplasty. Incidence of surgical site infection was studied after a maximum incubation period of 90 days. In order to assess the effect of inadequate prophylaxis on surgical site infection we used the relative risk adjusted with a logistic regression model. RESULTS: We studied 681 patients. Incidence of surgical site infection was 4% (95% CI 2.5-5.5). Antibiotic prophylaxis was administered in 99% of cases, with an overall protocol adequacy of 74%. The main cause of non-compliance was the length of prescription (22.2%; 149 patients). The effect of inadequate prophylaxis on surgical site infection was RRadjusted=0.47; 95%CI 0.19-1.17, (p>0.05). CONCLUSIONS: Adequacy of antibiotic prophylaxis was high. No relationship between prophylaxis adequacy and incidence of surgical site infection was founded. Surveillance allows us to assess surgical site infection and risk factors.

[Assessment of antibiotic prophylaxis adequacy in rectal surgery]. / Evaluación de la adecuación de la profilaxis antibiótica en la cirugía de recto.

OBJECTIVE: Antibiotic prophylaxis is the most suitable tool for preventing surgical site infection (SSI), so the development of guidelines and assessment of its monitoring is essential. In this study protocol compliance of antibiotic prophylaxis in rectal surgery and the effect of its adequacy in terms of pre-ention of SSI was assessed. METHODS: Prospective cohort study was conducted from 1 January 2009 to 30 December 2015. The degree of compliance with antibiotic prophylaxis and causes of non-compliance in rectal surgery was evaluated. The incidence of SSI was studied after a maximum period of 30 days of incubation. To assess the effect of prophylaxis non-compliance on SSI the relative risk (RR) adjusted with the aid of a logistic regression model was used. RESULTS: The study covered a total of 244 patients. The patients infected reached 20 cases with a SSI cumulative incidence of 8.2% (CI95%: 4.8-11.6). Antibiotic prophylaxis was indicated in all patients and was administered in 98% of cases, with an overall protocol compliance 92.5%. The principal cause of non-compliance was the choice of antibiotic 55.6% (n=10). The effect of inadequacy of antibiotic prophylaxis on surgical infection was RR=0.58, CI95%: 0.10-4.10 (P>0.05). CONCLUSIONS: Compliance with antibiotic prophylaxis was high. No relationship between the adequacy of prophylaxis and incidence of surgical site infection in rectal surgery was found.

[Appropriateness of empiric antibiotic therapy in urinary tract infection in emergency room]. / Adecuación del tratamiento empírico de la infección urinaria en urgencias.

INTRODUCTION: To describe characteristics of urinary tract infections attended in an Emergency Department. To assess antibiotic prescription and inappropriate treatment implications. METHODS: Adults patients attended in an Emergency Department during 2 months with UTI confirmed with urocultive were included. Appropriate antibiotic treatment was considered if the first antibiotic used was sensitive. We compared patients with appropriate and inappropriate antibiotic treatment. A logistic regression was performed to evaluate variables associated to inappropriate antibiotic treatment. RESULTS: A total of 151 patients were included (61% women, 67.1[22.3] years). Comorbidity was present in 63% of patients. Urinary sepsis was the most frequent diagnosis (32.5%). E coli was isolated in 65.6% of cases, and 10% presented bacteremia. Percentage of inappropriate antibiotic treatment was 20.5. It was associated (uncontrolled analysis) with male gender, elder patients, recent urinary simptoms, urologic manipulation more than 1 month ago, previous antibiotic use (especially ciprofloxacin or amoxicillin-clavulanate) and presentation with urinary sepsis. Logistic regression analysis showed association only with age (HR 0.978 per year, CI95% 0.957-1, p=0.029) and previous antibiotic use (HR 0.298, CI95% 0.098-0.901, p=0.05). Patients with inappropriate antibiotic treatment did not have higher mortality. CONCLUSIONS: Inappropriate antibiotic treatment for UTI in Emergency Department is relatively frequent and it is associated to older age and previous antibiotic use.