RESUMEN
Introduction: Exit-site infections (ESI) of central venous catheters for hemodialysis (CVC-HD) has been associated with early catheter removal and an increased risk of CVC-HD related bacteremia. No specific clinical scales to predict ESI have previously been validated. Methods: A multicenter prospective cohort study was performed to validate the proposed scale, which is based on the following 5 signs and symptoms: (i) pain at exit site during interdialytic period; (ii) hyperemia or erythema ≥2 cm from exit site; (iii) inflammation, induration, or swelling at exit site; (iv) fever ≥38 °C not attributable to other causes, and (v) obvious abscess or purulent exudate at the exit site. Adult patients with a tunneled CVC-HD for at least 1 month after insertion has been included. During each hemodialysis session, the exit site was assessed with the proposed scale by nurses. If any item was present, a pericatheter skin swab culture was collected: positive results were gold standard. The scale was validated using receiver operating characteristic (ROC) curves and logistic regression analysis. For this purpose, the logit function was applied, and the ESI probability calculated, as elogit ESI/1 + elogit ESI. Results: Three hundred thirty-seven CVC-HDs from 310 patients were analyzed, producing 515 cultures (117 infected and 398 healthy). The final version of the scale includes the following 3 signs and symptoms, which present the greatest predictive capacity: (i) pain at exit site during interdialytic period, (ii) hyperemia or erythema ≥2 cm from exit site, and (iii) abscess or purulent exudate at the exit site. The final version generated an area under the ROC curve (AUC) of 88.3% (95% confidence interval [CI]: 85.2%-91%; P < 0.001), Youden index 0.7557 ≈ 1, sensitivity 80.34% (95% CI: 71.36%-87.71%) and specificity 95.23% (95% CI: 92.73%-97%). Conclusions: The validation shows that the scale has good predictive properties, detecting approximately 90% of ESI with very acceptable validity parameters.
RESUMEN
Objetivo: Analizar la percepción de las enfermeras renales en España en relación con el entorno organizacional para la práctica clínica basada en la evidencia (PCBE); y determinar qué factores profesionales y del contexto influyen en esta percepción. Material y Método: Estudio observacional transversal multicéntrico, en 15 servicios de nefrología de distintos hospitales en España y 2 centros de diálisis. Se utilizaron los instrumentos Practice Environment Scale of Nursing Work Index (PES-NWI) y Evidence Based Practice Questionnarie (EBPQ). Se realizó un análisis estadístico descriptivo, bivariado (ANOVA, Kruskall-Wallis), y regresión logística con la puntuación total del EBPQ como variable dependiente.Resultados: Se recibieron 397 encuestas (participación 84,28%), tras depuración encuestas, fueron válidas 382 (81,1% población): 82,7% mujeres, edad media 42 años, media de experiencia profesional como enfermera 18,2 años (12,2 años en nefrología), 94,8% clínicas, 81,9% de hemodiálisis. Puntuación media PES-NWI 62,35±15,10 (IC 95%: 60,78-48,06). Presentaron menores puntuaciones en algunos factores del PES-NWI las enfermeras de centros >500 enfermeras, que trabajan en hemodiálisis y >11 años de experien-cia profesional. Las enfermeras gestoras presentaron mayores puntuaciones en todos los factores del PES-NWI. Puntuación media EBPQ 81,05±21,92 (IC 95%: 78,70-83,4). Presentaron mayores puntuaciones en varios factores del EBPQ las enfermeras con menor experiencia profesional, mejor puntuación en PES-NWI y que poseían estudios de postgrado.Conclusiones: Los factores que más influyen en la percepción de las enfermeras renales en España son la experiencia profesional, el rol dentro de la organización, un contexto favorable y la formación de postgrado.(AU)
Objective: To analyze the perception of renal nurses in Spain regarding the organizational environment for evidence-based clinical practice (EBCP), and to determine what professional and context factors influence such perception.Material and Method: A crosssectional observational multicenter study was carried out in 15 nephrology services from different Spanish hospitals and 2 dialysis centers. The Practice Environment Scale of Nursing Work Index (PES-NWI) and Evidence-Based Practice Questionnaire (EBPQ) tools were used. A descriptive, bivariate statistical analysis (ANOVA, Kruskall-Wallis) and logistic regression were performed with the EBPQ total score as the dependent variable.Results: A total of 397 surveys were received (participation rate: 84.28%), and after processing the surveys 382 were valid (81.1% of the population): 82.7% were women, with a mean age of 42 years, a mean of 18.2 years of professional experience as a nurse (12.2 years in nephrology), 94.8% were clinical nurses, and 81.9% worked in hemodialysis. The average PES-NWI score was 62.35±15.10 (95% CI:60.78-48.06). Nurses in centers with more than 500 nurses, those who worked in hemodialysis, and those with more than 11 years of professional experience had lower scores on some PES-NWI factors. Nurse managers had higher scores in all PES-NWI factors. The average EBPQ score was 81.05±21.92 (95% CI:78.70-83.4). Nurses with less professional experience the better PES-NWI scores; also, postgraduate nurses had higher scores on several EBPQ factors. Conclusions: Factors that most influence the perception of Spanish renal nurses are professional experience, role within the organization, a favorable context, and postgraduate education.(AU)