Famotidina en el tratamiento de pacientes hospitalizados con COVID-19. Revisión sistemática y metaanálisis

Introducción: El síndrome respiratorio agudo severo coronavirus 2 (SARS-CoV-2), de alta morbimortalidad, carece a la fecha de preparar esta revisión, de una terapia específica altamente eficaz. Famotidina se ha postulado como una opción terapéutica viable, basado en trabajos de cohorte retrospectiva y modelos computacionales guiados por inteligencia artificial. Objetivo: Recopilar la mejor evidencia científica disponible para determinar la efectividad y eficacia de famotidina en el tratamiento de pacientes hospitalizados con COVID-19, para reducir el riesgo de progresión de la enfermedad, intubación, muerte y tiempo de estancia hospitalaria. Material y Métodos: Se realizó una búsqueda en PubMed, EBSCO, Scopus, Web of Science y Cochrane Central, de artículos originales que reporten las variables de interés asociadas al uso de famotidina en pacientes hospitalizados con COVID- 19. Los investigadores independientemente evaluaron y seleccionaron los estudios, se extrajeron los datos expuestos para las asociaciones de interés y se procesaron con el software Revman 5.3. Resultados: En la búsqueda se obtuvo un total de 126 artículos potenciales para la revisión, de los cuales 14 fueron seleccionados para el análisis. En el metaanálisis se incluyeron un total de 47.044 pacientes, de los cuales 6.647 fueron los usuarios de famotidina. El riesgo de intubación se vio reducido en el grupo no expuesto a famotidina, aunque sin significancia estadística, (RR 1,43 IC95% 0,42-4,83), en cuanto a la mortalidad no se evidenció reducción significativa en el grupo de famotidina (RR 0,95 IC 95% 0,70-1,29). Se observó reducción en el tiempo de estancia hospitalaria (DM -1,60 -2,89, -0,31) y finalmente se mostró que no hay presencia de asociación entre el uso de famotidina y el desenlace compuesto de reducción del riesgo de ingreso a UCI, intubación y muerte (RR 1,03 IC 95% 0,46-2,34). Conclusión: Famotidina no presenta efectividad ni eficacia en la reducción de riesgo de intubación o ingreso a UCI ni de mortalidad en pacientes hospitalizados por COVID-19. La eficacia en la reducción de la estancia hospitalaria no es consistente y se necesitan más ensayos clínicos con buena calidad metodológica para definirla.

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), with high morbidity and mortality, lacks, at the time of preparing this review, a highly effective specific therapy. Famotidine has been postulated as a viable therapeutic option, based on retrospective cohort investigations and computational models guided by artificial intelligence. Aim: The objective of this study was to compile the best scientific evidence available to determine the effectiveness and efficacy of famotidine in the treatment of hospitalized patients with COVID-19, to reduce the risk of disease progression, intubation, death, and time to hospital stay. Methods: A search was carried out in PubMed, EBSCO, Scopus, Web of Science, and Central Cochrane, for original articles that report the variables of interest associated with the use of famotidine in hospitalized patients with COVID-19. The investigators independently evaluated and selected the studies, the exposed data for the associations of interest were extracted and processed with Revman 5.3 software. Results: The search yielded a total of 126 potential articles for the review, of which 14 were selected for analysis. A total of 47,044 patients were included in the meta-analysis of which 6,647 were famotidine users. The risk of intubation was reduced in the group not exposed to famotidine, although without statistical significance (RR 1.43 IC95% 0.42 - 4.83), regarding mortality there was no significant reduction in the famotidine group (RR 0.95 IC 95 % 0.70-1.29). A reduction in the length of hospital stay was observed (MD -1.60 -2.89, -0.31) and finally it was shown that there is no association between the use of famotidine and the composite outcome of reduced risk of ICU admission, intubation and death. (RR 1.03 95% CI 0.46-2.34). Conclusion: Famotidine does not show effectiveness or efficacy in reducing the risk of intubation or ICU admission or mortality in patients hospitalized for COVID-19. The efficacy in reducing hospital stay is not consistent and more clinical trials with good methodological quality are needed to define it.

Incidence and risk factors for catheter-associated urinary tract infection in 623 intensive care units throughout 37 Asian, African, Eastern European, Latin American, and Middle Eastern nations: A multinational prospective research of INICC.

OBJECTIVE: To identify urinary catheter (UC)-associated urinary tract infection (CAUTI) incidence and risk factors. DESIGN: A prospective cohort study. SETTING: The study was conducted across 623 ICUs of 224 hospitals in 114 cities in 37 African, Asian, Eastern European, Latin American, and Middle Eastern countries. PARTICIPANTS: The study included 169,036 patients, hospitalized for 1,166,593 patient days. METHODS: Data collection took place from January 1, 2014, to February 12, 2022. We identified CAUTI rates per 1,000 UC days and UC device utilization (DU) ratios stratified by country, by ICU type, by facility ownership type, by World Bank country classification by income level, and by UC type. To estimate CAUTI risk factors, we analyzed 11 variables using multiple logistic regression. RESULTS: Participant patients acquired 2,010 CAUTIs. The pooled CAUTI rate was 2.83 per 1,000 UC days. The highest CAUTI rate was associated with the use of suprapubic catheters (3.93 CAUTIs per 1,000 UC days); with patients hospitalized in Eastern Europe (14.03) and in Asia (6.28); with patients hospitalized in trauma (7.97), neurologic (6.28), and neurosurgical ICUs (4.95); with patients hospitalized in lower-middle-income countries (3.05); and with patients in public hospitals (5.89).The following variables were independently associated with CAUTI: Age (adjusted odds ratio [aOR], 1.01; P < .0001), female sex (aOR, 1.39; P < .0001), length of stay (LOS) before CAUTI-acquisition (aOR, 1.05; P < .0001), UC DU ratio (aOR, 1.09; P < .0001), public facilities (aOR, 2.24; P < .0001), and neurologic ICUs (aOR, 11.49; P < .0001). CONCLUSIONS: CAUTI rates are higher in patients with suprapubic catheters, in middle-income countries, in public hospitals, in trauma and neurologic ICUs, and in Eastern European and Asian facilities.Based on findings regarding risk factors for CAUTI, focus on reducing LOS and UC utilization is warranted, as well as implementing evidence-based CAUTI-prevention recommendations.

International Nosocomial Infection Control Consortium (INICC) report of health care associated infections, data summary of 45 countries for 2015 to 2020, adult and pediatric units, device-associated module.

BACKGROUND: Reporting on the International Nosocomial Infection Control Consortium study results from 2015 to 2020, conducted in 630 intensive care units across 123 cities in 45 countries spanning Africa, Asia, Eastern Europe, Latin America, and the Middle East. METHODS: Prospective intensive care unit patient data collected via International Nosocomial Infection Control Consortium Surveillance Online System. Centers for Disease Control and Prevention/National Health Care Safety Network definitions applied for device-associated health care-associated infections (DA-HAI). RESULTS: We gathered data from 204,770 patients, 1,480,620 patient days, 936,976 central line (CL)-days, 637,850 mechanical ventilators (MV)-days, and 1,005,589 urinary catheter (UC)-days. Our results showed 4,270 CL-associated bloodstream infections, 7,635 ventilator-associated pneumonia, and 3,005 UC-associated urinary tract infections. The combined rates of DA-HAIs were 7.28%, and 10.07 DA-HAIs per 1,000 patient days. CL-associated bloodstream infections occurred at 4.55 per 1,000 CL-days, ventilator-associated pneumonias at 11.96 per 1,000 MV-days, and UC-associated urinary tract infections at 2.91 per 1,000 UC days. In terms of resistance, Pseudomonas aeruginosa showed 50.73% resistance to imipenem, 44.99% to ceftazidime, 37.95% to ciprofloxacin, and 34.05% to amikacin. Meanwhile, Klebsiella spp had resistance rates of 48.29% to imipenem, 72.03% to ceftazidime, 61.78% to ciprofloxacin, and 40.32% to amikacin. Coagulase-negative Staphylococci and Staphylococcus aureus displayed oxacillin resistance in 81.33% and 53.83% of cases, respectively. CONCLUSIONS: The high rates of DA-HAI and bacterial resistance emphasize the ongoing need for continued efforts to control them.

Assessing the impact of a multidimensional approach and an 8-component bundle in reducing incidences of ventilator-associated pneumonia across 35 countries in Latin America, Asia, the Middle East, and Eastern Europe.

BACKGROUND: Ventilator associated pneumonia (VAP) occurring in the intensive care unit (ICU) are common, costly, and potentially lethal. METHODS: We implemented a multidimensional approach and an 8-component bundle in 374 ICUs across 35 low and middle-income countries (LMICs) from Latin-America, Asia, Eastern-Europe, and the Middle-East, to reduce VAP rates in ICUs. The VAP rate per 1000 mechanical ventilator (MV)-days was measured at baseline and during intervention at the 2nd month, 3rd month, 4-15 month, 16-27 month, and 28-39 month periods. RESULTS: 174,987 patients, during 1,201,592 patient-days, used 463,592 MV-days. VAP per 1000 MV-days rates decreased from 28.46 at baseline to 17.58 at the 2nd month (RR = 0.61; 95% CI = 0.58-0.65; P < 0.001); 13.97 at the 3rd month (RR = 0.49; 95% CI = 0.46-0.52; P < 0.001); 14.44 at the 4-15 month (RR = 0.51; 95% CI = 0.48-0.53; P < 0.001); 11.40 at the 16-27 month (RR = 0.41; 95% CI = 0.38-0.42; P < 0.001), and to 9.68 at the 28-39 month (RR = 0.34; 95% CI = 0.32-0.36; P < 0.001). The multilevel Poisson regression model showed a continuous significant decrease in incidence rate ratios, reaching 0.39 (p < 0.0001) during the 28th to 39th months after implementation of the intervention. CONCLUSIONS: This intervention resulted in a significant VAP rate reduction by 66% that was maintained throughout the 39-month period.

Decreasing central line-associated bloodstream infections rates in intensive care units in 30 low- and middle-income countries: An INICC approach.

BACKGROUND: Central line (CL)-associated bloodstream infections (CLABSIs) occurring in the intensive care unit (ICU) are common and associated with a high burden. METHODS: We implemented a multidimensional approach, incorporating an 11-element bundle, education, surveillance of CLABSI rates and clinical outcomes, monitoring compliance with bundle components, feedback of CLABSI rates and clinical outcomes, and performance feedback in 316 ICUs across 30 low- and middle-income countries. Our dependent variables were CLABSI per 1,000-CL-days and in-ICU all-cause mortality rates. These variables were measured at baseline and during the intervention, specifically during the second month, third month, 4 to 16 months, and 17 to 29 months. Comparisons were conducted using a two-sample t test. To explore the exposure-outcome relationship, we used a generalized linear mixed model with a Poisson distribution to model the number of CLABSIs. RESULTS: During 1,837,750 patient-days, 283,087 patients, used 1,218,882 CL-days. CLABSI per 1,000 CL-days rates decreased from 15.34 at the baseline period to 7.97 in the 2nd month (relative risk (RR) = 0.52; 95% confidence interval [CI] = 0.48-0.56; P < .001), 5.34 in the 3rd month (RR = 0.35; 95% CI = 0.32-0.38; P < .001), and 2.23 in the 17 to 29 months (RR = 0.15; 95% CI = 0.13-0.17; P < .001). In-ICU all-cause mortality rate decreased from 16.17% at baseline to 13.68% (RR = 0.84; P = .0013) at 17 to 29 months. CONCLUSIONS: The implemented approach was effective, and a similar intervention could be applied in other ICUs of low- and middle-income countries to reduce CLABSI and in-ICU all-cause mortality rates.

Prospective cohort study of incidence and risk factors for catheter-associated urinary tract infections in 145 intensive care units of 9 Latin American countries: INICC findings.

PURPOSE: Identify urinary catheter (UC)-associated urinary tract infections (CAUTI) incidence and risk factors (RF) in Latin American Countries. METHODS: From 01/01/2014 to 02/10/2022, we conducted a prospective cohort study in 145 ICUs of 67 hospitals in 35 cities in nine Latin American countries: Argentina, Brazil, Colombia, Costa Rica, Dominican Republic, Ecuador, Mexico, Panama, and Peru. To estimate CAUTI incidence, we used the number of UC-days as the denominator, and the number of CAUTIs as numerator. To estimate CAUTI RFs, we analyzed the following 10 variables using multiple logistic regression: gender, age, length of stay (LOS) before CAUTI acquisition, UC-days before CAUTI acquisition, UC-device utilization (DU) ratio, UC-type, hospitalizationtype, ICU type, facility ownership, and time period. RESULTS: 31,631 patients, hospitalized for 214,669 patient-days, acquired 305 CAUTIs. The pooled CAUTI rate per 1000 UC-days was 2.58, for those using suprapubic catheters, it was 2.99, and for those with indwelling catheters, it was 2.21. The following variables were independently associated with CAUTI: age, rising risk 1% yearly (aOR = 1.01; 95% CI 1.01-1.02; p < 0.0001 female gender (aOR = 1.28; 95% CI 1.01-1.61; p = 0.04), LOS before CAUTI acquisition, rising risk 7% daily (aOR = 1.07; 95% CI 1.06-1.08; p < 0.0001, UC/DU ratio (aOR = 1.14; 95% CI 1.08-1.21; p < 0.0001, public facilities (aOR = 2.89; 95% CI 1.75-4.49; p < 0.0001. The periods 2014-2016 and 2017-2019 had significantly higher risks than the period 2020-2022. Suprapubic catheters showed similar risks as indwelling catheters. CONCLUSION: The following CAUTI RFs are unlikely to change: age, gender, hospitalization type, and facility ownership. Based on these findings, it is suggested to focus on reducing LOS, UC/DU ratio, and implementing evidence-based CAUTI prevention recommendations.

Methicillin-Resistant Staphylococcus aureus Bloodstream Infections in Hospitalized Patients in Peru.

There is a knowledge gap in the epidemiology of methicillin-resistant Staphylococcus aureus (MRSA) causing bloodstream infections (BSIs) in Peru. Through a surveillance study in 13 hospitals of 10 Peruvian regions (2017-2019), we assessed the proportion of MRSA among S. aureus BSIs as well as the molecular typing of the isolates. A total of 166 S. aureus isolates were collected, and 36.1% of them were MRSA. Of note, MRSA isolates with phenotypic and genetic characteristics of the hospital-associated Chilean-Cordobes clone (multidrug-resistant SCCmec I, non-Panton-Valentine leukocidin [PVL] producers) were most commonly found (70%), five isolates with genetic characteristics of community-associated MRSA (CA-MRSA)-SCCmec IV, PVL-producer-(8.3%) were seen in three separate regions. These results demonstrate that hospital-associated MRSA is the most frequent MRSA found in patients with BSIs in Peru. They also show the emergence of S. aureus with genetic characteristics of CA-MRSA. Further studies are needed to evaluate the extension of CA-MRSA dissemination in Peru.

Prevalence of Antimicrobial Resistance in Gram-Negative Bacteria Bloodstream Infections in Peru and Associated Outcomes: VIRAPERU Study.

Surveillance of antimicrobial resistance among gram-negative bacteria (GNB) is of critical importance, but data for Peru are not available. To fill this gap, a non-interventional hospital-based surveillance study was conducted in 15 hospitals across Peru from July 2017 to October 2019. Consecutive unique blood culture isolates of key GNB (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter spp.) recovered from hospitalized patients were collected for centralized antimicrobial susceptibility testing, along with linked epidemiological and clinical data. A total of 449 isolates were included in the analysis. Resistance to third-generation cephalosporins (3GCs) was present in 266 (59.2%) GNB isolates. Among E. coli (n = 199), 68.3% showed 3GC resistance (i.e., above the median ratio for low- and middle-income countries in 2020 for this sustainable development goal indicator). Carbapenem resistance was present in 74 (16.5%) GNB isolates, with wide variation among species (0% in E. coli, 11.0% in K. pneumoniae, 37.0% in P. aeruginosa, and 60.8% in Acinetobacter spp. isolates). Co-resistance to carbapenems and colistin was found in seven (1.6%) GNB isolates. Empiric treatment covered the causative GNB in 63.3% of 215 cases. The in-hospital case fatality ratio was 33.3% (92/276). Pseudomonas aeruginosa species and carbapenem resistance were associated with higher risk of in-hospital death. In conclusion, an important proportion of bloodstream infections in Peru are caused by highly resistant GNB and are associated with high in-hospital mortality.

Tiempo de contagio de pacientes con SARS-CoV-2: un análisis a diez meses de la pandemia / Time of contagión of patients with SARS-CoV-2: Analysis at ten months of pandemic

RESUMEN Bajo las actuales circunstancias de la pandemia por COVID-19, y dada la posibilidad de colapso de los sistemas de salud debido al aumento de contagios a nivel mundial, es necesario establecer el tiempo en el que un paciente infectado con SARS-CoV-2 mantiene la condición de contagiante. Determinar con mayor precisión la fase de transmisibilidad del agente infeccioso servirá para estandarizar el periodo de aislamiento del paciente y evitará la diseminación del virus a nivel comunitario y su reincorporación a la actividad laboral de forma segura. Mediante pruebas moleculares se ha establecido que el ARN viral es detectable en el tracto respiratorio desde 2 a 3 días antes de la manifestación de síntomas; alcanza su máximo nivel al inicio de los síntomas y disminuye progresivamente en los siguientes 7 u 8 días en la mayoría de pacientes. Sin embargo, la detección persistente del ARN viral mediante RT-PCR no necesariamente significa que el paciente conserve su capacidad infectante. Se ha reportado que en casos leves y moderados de COVID-19, la capacidad replicativa del virus perdura hasta el día 9 desde el inicio de síntomas, mientras que, en casos severos y críticos, se prolonga hasta el día 20 desde la aparición de síntomas. Actualmente, las estrategias propuestas por la OMS y los CDC para definir el tiempo de aislamiento de los contagiados se basan en el tiempo de manifestación de síntomas y la evolución clínica del paciente.

ABSTRACT Under the current circumstances of the COVID-19 pandemic and given the possibility of collapse of health systems due to the increase in infections worldwide, it is necessary to establish the time in which a patient infected with SARS-CoV-2 maintains the contagious condition. Determining the infectious agent's transmissibility phase with greater precision will serve to standardize the isolation period of the patient and will prevent the spread of the virus at the community level and its safe return to work. Through molecular tests it has been established that viral RNA is detectable in the respiratory tract from 2 to 3 days before the manifestation of symptoms, reaching its maximum level at the onset of symptoms and decreasing progressively in the following 7 or 8 days in most of patients. However, persistent detection of viral RNA by RT-PCR does not necessarily mean that the patient remains infectious. It has been reported that in mild and moderate cases of COVID-19, the replicative capacity of the virus lasts until day 9 from the onset of symptoms, while, in severe and critical cases, it lasts until day 20 from the onset of symptoms. Currently, the strategies proposed by the WHO and the CDC to define the isolation time of those infected are based on the time of manifestation of symptoms and the clinical evolution of the patient.

Lipid profile levels in HIV-AIDS patients on treatment with efavirenz and atazanavir. Cohort study.

INTRODUCTION: Antiretroviral treatment for HIV generates dyslipidemia, which is associated with cardiovascular risk and atherosclerosis. OBJECTIVE: To compare antiretroviral agents effects on lipids in patients with HIV-AIDS. METHODS: Retrospective cohort. The lipid profiles of patients receiving efavirenz (EFV) vs. atazanavir (ATV) with a zidovudine + lamivudine backbone for 36 months were compared. RESULTS: 212 patients were included in the study. From baseline to month 36, HDL increase in the group of patients treated with ATV was higher in comparison with that of patients on EFV (8.33 vs. 4.26; p < 0.01); a difference in triglycerides was observed between groups, with a decrease of 19.06 mg/dL in patients on ATV and an increase of 40.62 mg/dL in those who received EFV (p < 0.001). Mean difference in total and LDL-cholesterol change between both treatments was not significant (p = 0.32 and p = 0.951, respectively). CONCLUSIONS: ATV-containing regimens were associated with more favorable changes in triglyceride and HDL levels than EFV regimens. This benefit could be associated with a reduction in long-term cardiovascular risk; this relationship requires further study.

INTRODUCCIÓN: El tratamiento antirretroviral para VIH genera dislipidemia asociada a riesgo cardiovascular y aterosclerosis. OBJETIVO: Comparar los efectos lipídicos de los antirretrovirales en pacientes con VIH-sida. MÉTODOS: Cohorte retrospectiva. Se comparó el perfil lipídico de los pacientes que recibieron efavirenz (EFV) versus atazanavir (ATV) con una backbone de zidovudina + lamivudina durante 36 meses. RESULTADOS: Se incluyeron 212 pacientes. Desde el inicio hasta los 36 meses, el aumento del HDL del grupo de pacientes en tratamiento con ATV fue mayor en comparación con el que presentaron los pacientes con EFV (8.33 versus 4.26, respectivamente; p < 0.01); se observó una diferencia de triglicéridos entre los grupos, con disminución de 19.06 mg/dL en los pacientes con ATV y aumento de 40.62 mg/dL en los que recibieron EFV (p < 0.001). La diferencia de medias en el cambio de colesterol total y LDL entre ambos tratamientos no fue significativa (p = 0.32 y p = 0.951, respectivamente). CONCLUSIONES: Los regímenes con ATV se asociaron a cambios más favorables en los niveles de triglicéridos y HDL que los regímenes con EFV, relación que podría asociarse a reducción del riesgo cardiovascular a largo plazo, la cuál requiere estudios adicionales.

Device-associated infection rates and mortality in intensive care units of Peruvian hospitals: findings of the International Nosocomial Infection Control Consortium.

OBJECTIVES: To measure device-associated infection (DAI) rates, microbiological profiles, bacterial resistance, and attributable mortality in intensive care units (ICUs) in hospitals in Peru that are members of the International Nosocomial Infection Control Consortium (INICC). METHODS: Prospective cohort surveillance of DAIs was conducted in ICUs in four hospitals applying the definitions for nosocomial infections of the U.S. Centers for Disease Control and Prevention National Nosocomial Infections Surveillance System (CDC-NNIS) and National Healthcare Safety Network (NHSN). RESULTS: From September 2003 to October 2007 1 920 patients hospitalized in ICUs for an aggregate of 9 997 days acquired 249 DAIs, accounting for a rate of 13.0% and 24.9 DAIs per 1 000 ICU-days. The ventilator-associated pneumonia (VAP) rate was 31.3 per 1 000 ventilator-days; the central venous catheter-associated bloodstream infections (CVC-BSI) rate was 7.7 cases per 1 000 catheter-days; and the rate for catheter-associated urinary tract infections (CAUTI) was 5.1 cases per 1 000 catheter-days. Extra mortality for VAP was 24.5% (RR 2.07, P < 0.001); for CVC-BSI the rate was 15.0% (RR 2.75, P = 0.028). Methicillin-resistant strains accounted for 73.5% of all Staphylococcus aureus DAIs; 40.5% of the Enterobacteriaceae were resistant to ceftriaxone, 40.8% were resistant to ceftazidime, and 32.0% were resistant to piperacillin-tazobactam. Sixty-five percent of Pseudomonas aeruginosa isolates were resistant to ciprofloxacin, 62.0% were resistant to ceftazidime, 29.4% were resistant to piperacillin-tazobactam, and 36.1% were resistant to imipenem. CONCLUSIONS: The high rates of DAIs in the Peruvian hospitals in this study indicate the need for active infection control. Programs consisting of surveillance of DAIs and implementation of guidelines for infection prevention can ensure improved patient safety in the ICUs and throughout hospitals.

Device-associated infection rates and mortality in intensive care units of Peruvian hospitals: findings of the International Nosocomial Infection Control Consortium / Tasas de infección asociadas a aparatos y mortalidad en unidades de cuidados intensivos de hospitales peruanos: datos del Consorcio Internacional para el Control de las Infecciones Nosocomiales

OBJECTIVES: To measure device-associated infection (DAI) rates, microbiological profiles, bacterial resistance, and attributable mortality in intensive care units (ICUs) in hospitals in Peru that are members of the International Nosocomial Infection Control Consortium (INICC). METHODS: Prospective cohort surveillance of DAIs was conducted in ICUs in four hospitals applying the definitions for nosocomial infections of the U.S. Centers for Disease Control and Prevention National Nosocomial Infections Surveillance System (CDC-NNIS) and National Healthcare Safety Network (NHSN). RESULTS: From September 2003 to October 2007 1 920 patients hospitalized in ICUs for an aggregate of 9 997 days acquired 249 DAIs, accounting for a rate of 13.0 percent and 24.9 DAIs per 1 000 ICU-days. The ventilator-associated pneumonia (VAP) rate was 31.3 per 1 000 ventilator-days; the central venous catheter-associated bloodstream infections (CVC-BSI) rate was 7.7 cases per 1 000 catheter-days; and the rate for catheter-associated urinary tract infections (CAUTI) was 5.1 cases per 1 000 catheter-days. Extra mortality for VAP was 24.5 percent (RR 2.07, P < 0.001); for CVC-BSI the rate was 15.0 percent (RR 2.75, P = 0.028). Methicillin-resistant strains accounted for 73.5 percent of all Staphylococcus aureus DAIs; 40.5 percent of the Enterobacteriaceae were resistant to ceftriaxone, 40.8 percent were resistant to ceftazidime, and 32.0 percent were resistant to piperacillin-tazobactam. Sixty-five percent of Pseudomonas aeruginosa isolates were resistant to ciprofloxacin, 62.0 percent were resistant to ceftazidime, 29.4 percent were resistant to piperacillin-tazobactam, and 36.1 percent were resistant to imipenem. CONCLUSIONS: The high rates of DAIs in the Peruvian hospitals in this study indicate the need for active infection control. Programs consisting of surveillance of DAIs and implementation of guidelines for infection prevention can ensure improved patient...

OBJETIVOS: Determinar las tasas de infecciones asociadas a aparatos (IAA), sus perfiles microbiológicos y la resistencia bacteriana, así como la mortalidad atribuible a estas infecciones en unidades de cuidados intensivos (UCI) de hospitales de Perú, miembros del Consorcio Internacional para el Control de las Infecciones Nosocomiales (INICC). MÉTODOS: Se hizo un seguimiento retrospectivo de cohorte de las IAA en las UCI de cuatro hospitales, según las definiciones de infección nosocomial del Sistema Nacional de Vigilancia de Infecciones Nosocomiales de los Centros para el Control y la Prevención de Enfermedades (CDC-NNIS) y de la Red Nacional de Seguridad Sanitaria (NHSN), de los Estados Unidos de América. RESULTADOS: De septiembre de 2003 a octubre de 2007, 1 920 pacientes hospitalizados en las UCI, con un total de 9 997 días, adquirieron 249 IAA, para una tasa de 13,0 por paciente (24,9 IAA por 1 000 días-UCI). La tasa de neumonía asociada a respiradores (NAR) fue de 31,3 casos por 1 000 días-ventilador; la tasa de infecciones circulatorias asociadas con cateterismo venoso central (IC-CVC) fue de 7,7 casos por 1 000 díascatéter; y la tasa de infecciones urinarias asociadas con el uso de catéteres (IUAC) fue de 5,1 casos por días-catéter. La mortalidad adicional por NAR fue de 24,5 por ciento (RR = 2,07; P < 0,001) y por IC-CVC fue de 15,0 por ciento (RR = 2,75; P = 0,028). De las IAA por Staphylococcus aureus, 73,5 por ciento se debían a cepas resistentes a la meticilina; de los aislamientos de Enterobacteriaceae, 40,5 por ciento eran resistentes a la ceftriaxona, 40,8 por ciento a la ceftazidima y 32,0 por ciento a la piperacilina-tazobactam. De los aislamientos de Pseudomonas aeruginosa, 65,0 por ciento eran resistentes a la ciprofloxacina; 62,0 por ciento a la ceftazidima; 36,1 por ciento al imipenem; y 29,4 por ciento a la piperacilina-tazobactam. CONCLUSIONES: Las elevadas tasas de IAA encontradas en los hospitales peruanos señalan...