Device-associated infections in neonatal care units in a middle-income country, 2016-2018

Abstract Objective: Describe the device-associated infections in the NICUs in Cali - Colombia, a middle-income country, between August 2016 to December 2018. Methods: Observational cross-sectional study evaluating reports of device-associated infections in 10 NICUs in Cali, Colombia, between August 2016 and December 2018. Socio-demographic and microbiological data were obtained from the National Public Health surveillance system, through a specialized notification sheet. The relationship of device-associated infections with several outcomes including birth weight, microorganisms, and mortality was evaluated using OR Cl95%, using the logistic regression model. Data processing was performed using the statistical program STATA 16. Results: 226 device-associated infections were reported. The rate of infection with central line-associated bloodstream infections was 2.62 per 1000 days of device use and 2.32 per 1000 days for ventilator-associated pneumonia. This was higher in neonates under 1000 g; 4.59 and 4.10, respectively. 43.4% of the infections were due to gram-negative bacteria and 42.3% were due to gram-positive bacteria. Time from hospitalization to diagnosis of all device-associated infections had a median of 14 days. When compared by weight, infants with a weight lower than 1000 g had a greater chance of death (OR 3.61; 95% CI 1.53-8.49, p = 0.03). Infection by gram-negative bacteria was associated with a greater chance of dying (OR 3.06 CI 95 1.33-7.06, p = 0.008). Conclusions: These results highlight the need to maintain epidemiological surveillance processes in neonatal intensive care units, especially when medical devices are used.

Infección asociada a dispositivos en Unidad de Cuidados Intensivos. Oeste de Qatar / Device-associated infection in an Intensive Care Unit. Western Qatar

Introducción: Las infecciones asociadas a dispositivos en unidades de cuidados intensivos tienen un gran impacto. Objetivo: Describir la incidencia y adherencia en el cumplimiento de intervenciones preventivas de infecciones asociadas a dispositivos en la Unidad de Cuidados Intensivos del Hospital Cubano en Qatar. Material y Métodos: Se realizó una vigilancia prospectiva en la UCI de 6 camas entre enero de 2013 y diciembre de 2016. Se recolectaron datos sobre cumplimiento de intervenciones preventivas para inserción y mantenimiento de dispositivos. Se analizaron las tasas de infección, la razón de utilización del dispositivo y el cumplimiento de prácticas. Resultados: La media de Neumonía asociada a la ventilación fue de 2,61 por 1 000 días de ventilación, las tasas de infección, cero para Infección del tracto urinario asociado al catéter y del torrente sanguíneo por dispositivo vascular. La utilización del ventilador fue superior (0,32) (p = 0,000) en comparación con los datos de la Red Nacional de Seguridad Sanitaria de los Estados Unidos (0,24), las del catéter venoso central y el catéter urinario fueron similares 0.33, 0.54 (p = 0,000), respectivamente. La adherencia a las intervenciones preventivas para el ventilador fue de 99 por ciento y 98,2 por ciento durante 2013 y 2014, y 100 por ciento después, las relacionadas con el uso del dispositivos vasculares centrales fue de 100 por ciento, mientras con el catéter urinario tuvo la cifra más baja en 2013 (97,9 por ciento ), 2015 (98,3 por ciento) y 2016(99,6 por ciento). Conclusiones: Existió baja incidencia de infecciones asociadas a dispositivos relacionadas con la adherencia al programa integral de control de infecciones en la Unidad de Cuidados Intensivos(AU)

Introduction: Device-associated infection (DAI) in intensive care units have a major impact on morbidity, mortality, and costs. Objective: To describe the incidence and adherence of a DAI and the bundle compliance in an intensive care unit at a community hospital in Western Qatar. Material and Methods: A prospective surveillance was conducted in a 6-beds medical-surgical intensive care unit from Jan 2013 to December 2016. Data about clinical, laboratory, and other diagnostic information were collected to satisfy the criteria for infection. DAI rates, device utilization ratio (UR) and bundle compliance were analyzed, and comparison with 2013 US data was performed. Results: The pooled mean of ventilator-associated pneumonia rates was 2.61 per 1000 ventilator days, and zero for catheter-associated urinary tract and central line bloodstream infections. The ventilator UR was superior (0.32) (p =0.000) than the National Health System Network (NHSN) data (0.24); the use of the central line bundle and the urinary catheter were similar (0.33, 0.54) (p=0.000), respectively. The compliance with bundle elements for ventilator was 99 percent and 98.2 percent for 2013 and 2014 respectively, and 100 percent compliance afterward. The compliance with central line bundle was 100 percent during the study period, whereas the compliance with urinary catheter bundle had the lowest figure in 2013 (97.9 percent), 98.3 percent in 2015, and 99.6 percent in 2016, related to bag contact with the floor. Conclusions: The study has shown the low incidence of device-associated infections related to a comprehensive infection control program in the Intensive Care Unit(AU)

Device-associated infections at a level-1 trauma centre of a developing Nation: Impact of automated surveillance, training and feedbacks.

Purpose: Device-associated infections constitute the majority of health care-associated infections (HAIs) in ICUs. Trauma patients are predisposed to acquire such infections due to various trauma-related factors. The prevalence of HAIs is underreported from developing nations due to a lack of systematic surveillance. This study reports the impact of an intensive surveillance on the rates and outcome of device-associated infections in trauma patients from a developing country and compares the rates with a previous pilot observation. Materials and Methods: The study was conducted at a level-1 trauma centre of India. Surveillance for ventilator-associated pneumonia (VAP), central line-associated blood stream infections (CLA-BSIs) and catheter-associated urinary tract infections (CA-UTIs) was done based on centre for disease control-National Healthcare Safety Network (CDC-NHSN) defi nitions. The impact of an intensive surveillance, education and awareness drive on the rates of infections over the study period, and compliance to preventive bundles and hand hygiene was assessed. Results: A total of 15,462 ventilator days, 12,207 central line days and 17,740 urinary catheter days were recorded in the study population. The overall rates of VAP, CLA-BSI and CA-UTI were respectively 17, 7.2 and 15.5/1000 device days. There was a signifi cant correlation between device days and the propensity to develop infections. Infections were the cause of death in 36.6% of fatal trauma cases. A signifi cantly higher rate of VAP, CLA-BSI and CA-UTIs was noted in fatal cases. The compliance to ventilator bundle, central line bundle, bladder bundle and hand hygiene were 74.5%, 86%, 79.3% and 64.6%, respectively. A high rate of multi-drug-resistance was observed in all pathogens. A gross reduction in the rates of all infections was observed over time during the study due to implementation of a stringent surveillance system, feedbacks and education. The compliance to hand hygiene and preventive bundles also increased over time. Conclusion: The automated surveillance was easy and useful for data entry and analysis. Surveillance had a signifi cant impact on reduction of HAIs and mortality in trauma patients.

Molecular & phenotypic characterization of Staphylococcus epidermidis in implant related infections.

Background & objectives: The discrimination between the Staphylococcus epidermidis colonizing the deep seated indwelling devices and those which are mere commensals has always been a challenge for the clinical microbiologist. This study was aimed to characterize the S. epidermidis isolates obtained from device related infection for their phenotypic and molecular markers of virulence and to see whether these markers can be used to differentiate the pathogenic S. epidermidis from the commensals. Methods: Fifty five S. epidermidis isolates from various device related infections such as endophthalmitis following intra-ocular lens (IOL) implantation, intravascular (IV) catheter related sepsis and orthopaedic implant infections, were studied for slime production, biotyping, antibiotic sensitivity; and mec A and ica positivity by the recommended procedures. Results: Twenty three (41.8%) isolates were multi-drug resistant, 26 (65.2%) were slime producers, 30 (54.5%) were adherent, 23 (41.8%) possessed the intercellular adhesin (ica) gene, and 28 (50.9%) harboured the mec A gene. Biotypes I and III were the commonest, most members of which were multi- drug resistant. Twenty two (73.3%) of the 30 adherent bacteria were slime producers as opposed to only 4 (16%) of the 25 non-adherent bacteria (P<0.001). A vast majority i.e. 21 (91.3%) of the 23 ica positive organisms were adherent to artificial surfaces in contrast to only 9 (28.1%) of the 32 non-ica positive organisms (P<0.001). Twenty (86.9%) of the 23 ica positive bacteria were slime producers, as opposed to only 6 (18.7%) of the 32 ica negative bacteria (P<0.001). Of the 23 multi-drug resistant isolates, 19 (82.6%) carried the mec A gene. Interpretation & conclusions: The present findings showed that ica AB and mec A were the two important virulence markers of S. epidermidis in implant infections and slime was responsible for the sessile mode of attachment on the devices.

Surveillance of device-associated infections at a teaching hospital in rural Gujarat - India.

Purpose: Surveillance of hospital-acquired infection (HAI), particularly device-associated infection (DAI), helps in determining the infection rates, risk factors, and in planning the preventive strategies to ensure a quality healthcare in any hospital. The present study was carried out to know the prevalence of DAI in a tertiary care teaching hospital of rural Gujarat. Materials and Methods: A prospective, site-specific surveillance of three common DAIs that is catheter-associated urinary tract infection (CA-UTI), IV-catheter-related bloodstream infection (IV-CRBSI), and ventilator-associated pneumonia (VAP) was carried out between July 2007 and April 2008, in different wards/ICUs. A surveillance plan, with guidelines and responsibilities of nurses, clinicians and microbiologist was prepared. Infection surveillance form for each patient suspected to have DAI was filled. The most representative clinical sample, depending on the type of suspected DAI, was collected using standard aseptic techniques and processed for aerobes and facultative anaerobes. All the isolates were identified and antimicrobial sensitivity testing performed as per CLSI guidelines. An accurate record of total device days for each of the indwelling devices under surveillance was also maintained. Data, collected in the prescribed formats, were analysed on monthly basis; and then, compiled at the end of the study. Descriptive analysis of the data was done and DAI rate was expressed as number of DAI per 1000 device days. Results: The overall infection rate for CA-UTI, IV-CRBSI, and VAP were found to be 0.6, 0.48, and 21.92 per 1000 device days, respectively. The organisms isolated were Staphylococcus aureus, CONS, Enterococci, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Escherichia coli. Conclusions: Duration of indwelling devices was found to be the major risk-factor for acquiring DAIs. Low DAI rate might have been due to use of antibiotics, often prophylactic. Active surveillance is quite a tedious and time-consuming process; however the outcome is useful in prevention and control of DAIs.