[SARS-CoV-2 seroprevalence study in patients undergoing addiction treatment in Madrid.] / Estudio de sero-prevalencia al SARS-CoV-2 en pacientes en tratamiento por adicciones en Madrid.

OBJECTIVE: Patients with addiction are a vulnerable group in which there is little data on the infection and severity of COVID-19. The objective of this study was to analyze the seroprevalence against SARS-CoV-2 in users in treatment for addictions in Madrid and to describe the factors related to the infection in this group. METHODS: Cross-sectional descriptive study (June-October 2020), in a non-probabilistic sample of 473 patients with Substance Use Disorder, from the 8 Addiction Care Centers (CAD) of the Madrid City Council. Their demographic, habits and health characteristics, IgM and IgG for SARS-CoV-2, previous PCR, presence of symptoms, contact with COVID-19 cases were described, and multivariate analysis was performed using binary logistic regression. RESULTS: 5.1% of the users had positive serology for SARS-CoV-2 (5.8% in men and 2.7% in women). The patients with the highest percentage of seropositivity were between 50-59 years old (8.3%), being the most prevalent main substance consumed alcohol (7.4%). Having a previous positive CRP showed a significant odds ratio (OR) regarding being seropositive in the frequentist analysis. CONCLUSIONS: The highest seroprevalence rate occurred among men, epidemiologically known factors being the ones that showed the greatest strength of association. The CAD seropositive user profile was a man at the age of 50, an alcohol user and without comorbidities. No characteristic related to substance use was found to justify the difference in risk of infection with the general population.

OBJETIVO: Los pacientes con adicción son un colectivo vulnerable en el que apenas hay datos sobre la infección y gravedad de la COVID-19. El objetivo de este estudio fue analizar la seroprevalencia frente a SARS-CoV-2 en usuarios en tratamiento por adicciones en Madrid y describir los factores relacionados con la infección en este colectivo. METODOS: Estudio descriptivo transversal (junio-octubre 2020), en una muestra no probabilística de 473 pacientes con Trastorno por Uso de Sustancias, de los 8 Centros de Atención a las Adicciones (CAD) del Ayuntamiento de Madrid. Se describieron sus características demográficas, de hábitos y de salud, IgM e IgG para SARS-CoV-2, PCR previa, presencia de síntomas, contacto con casos de COVID-19 y se realizó análisis multivariante mediante regresión logística binaria. RESULTADOS: El 5,1% de los usuarios tuvo serología positiva para SARS-CoV-2 (5,8% en hombres y 2,7% en mujeres). Los pacientes con mayor porcentaje de seropositividad tenían entre 50-59 años (8,3%), siendo la sustancia principal consumida más prevalente el alcohol (7,4%). Tener PCR positiva previa mostró una odds ratio (OR) significativa respecto a ser seropositivo en el análisis frecuentista. CONCLUSIONES: La mayor tasa de seroprevalencia se dio entre los hombres, siendo los factores epidemiológicamente conocidos los que más fuerza de asociación mostraron. El perfil de usuario seropositivo de los CAD fue un hombre en la década de los 50, consumidor de alcohol y sin comorbilidades. No se encontró característica alguna relacionada con el consumo de sustancias que justificase la diferencia de riesgo de infección con la población general.

[Decline in life expectancy in Madrid's districts in 2020: its correlation with social determinants]. / Caída de la esperanza de vida en distritos de Madrid en 2020: relación con determinantes sociales.

OBJECTIVE: Estimating the decrease in life expectancy (LE) of the population of Madrid and its districts and its relationship with socioeconomic variables in the first year of the COVID-19 pandemic. METHOD: Death records were obtained from the Municipal Register of inhabitants (Municipal Statistics Service). Based on Chiang II method, life expectancy at birth and at 65 years of age (LEB and LE65) were calculated, as well as their 95% confidence intervals both for men and women and their gross, net and minimum falls for each district in 2020 over 2019, their correlation with some socioeconomic variables distribution and the existence of multiple linear regression explicative models. RESULTS: In 2020, deaths in Madrid increased by 46.1% compared with the previous year, the LEB was 79.31 years in men and 85.25 years in women, meaning a decrease of 3.67 and 2.56 years respectively (4.42% and 2.91%). All districts registered decreases in LE, with the largest decrease in men in Tetuan (4.72 years) and in women in Chamartín (3.91 years). The most affected were the southern districts, especially in men. Immigrant and people over 80 years old rates explained 24% of the drop in LE in men, using linear regression model. CONCLUSIONS: The decrease in LE recorded in Madrid and its districts in 2020 is bigger than in Spain (1.6 years), takes us back to values of 2002 (LE65) and 2008 (LEB), has a sharper fall in the south and is territorially unequally distributed, according to socioeconomic variables and being associated with some of them.

Hospitalization burden and comorbidities of patients with rheumatoid arthritis in Spain during the period 2002-2017.

BACKGROUND: Rheumatoid arthritis (RA) is a chronic autoimmune rheumatic disease that is associated with multiple comorbidities and has a significant economic impact on the Spanish health system. The objective of this study was to estimate the rates of hospitalization of rheumatoid arthritis in Spain, and describing hospitalization rates and their changing by age, region, RA variant, and when RA as a main cause of hospitalization or a comorbidity. METHODS: Observational descriptive study that reviewed hospital records from the CMBD. We included all hospitalizations of patients in Spain whose main diagnosis or comorbidity in the ICD-9-CM was rheumatoid arthritis during the period of 2002-2017. RESULTS: A total of 315,190 hospitalizations with the RA code were recorded; 67.3% were in women. The mean age of the patients was 68.5 ± 13.9 years. The median length of hospital stay was 7 days (IQR 3-11 days). In 29,809 of the admissions, RA was coded as the main diagnosis (9.4%). When RA was not coded as the main diagnosis, the most frequent main diagnoses were diseases of the circulatory system (18.9%) and diseases of the respiratory system (17.4%). The hospitalization rate during the period of 2002-2017 was 43.8 (95% CI: 43.7-44.0) per 100,000 inhabitants and constantly increased during the period. The total cost for the healthcare system was 1.476 million euros, with a median of 3542 euros per hospitalization (IQR 2646-5222 euros). CONCLUSIONS: In Spain, the hospitalization rate of patients with RA increased during the study period, despite the decrease in the hospitalization rate when RA was the main diagnosis.

[Antibiotic prophylaxis in prostatic surgery: Adherence to the hospital protocol. Prospective cohort study.] / Profilaxis antibiótica en cirugía de próstata: adecuación al protocolo hospitalario. Estudio de cohortes prospectivo.

OBJECTIVES: To assess the adherence to the antibiotic prophylaxis protocol in patients undergoing prostate surgery and evaluate the effect of antibiotic prophylaxis on surgical site infections (SSI). MATERIAL AND METHODS: A prospective cohort study was carried out between January 2009 and September 2016. The global compliance with the antibiotic prophylaxis protocol was evaluated studying the items: time of onset, route of administration, antibiotic prescribed, duration and dose. Percentages of adequacy are described. The incidence of infection was calculated after 30 days of follow-up. Relationship between the adequacy to the protocol and the surgical site infection are described with the relative risk. RESULTS: A total of 595 patients were studied. The global adequacy was 93.8%. The leading cause of inadequacy was the time of onset 3%. The incidence of surgical site infection was 1%. No relationship between the inadequacy of antibiotic prophylaxis and surgical site infection (RR=1.1%; 95%CI: 1.0-1.2) was found. No relationship between the procedure (laparoscopic or open surgery) and surgical site infection (RR=0.4%; 95%CI: 0.1-1.9) was found. CONCLUSIONS: The adequacy of antibiotic prophylaxis was high. The incidence of surgical site infection was low and compliance of antibiotic prophylaxis contributes to diminish surgical site infection incidence.

OBJETIVO: El objetivo de este trabajo ha sido evaluar la adecuación de la profilaxis antibiótica y su relación con la incidencia de infección de sitio quirúrgico (ISQ) en pacientes sometidos a cirugía de próstata.MATERIAL Y MÉTODOS: Estudio de cohortes prospectivo, realizado de enero de 2009 a septiembre de 2016. Se evaluó la adecuación global al protocolo de profilaxis antibiótica y de cada apartado de la profilaxis (inicio, vía de administración, antibiótico de elección, duración y dosis). Se describieron los porcentajes de adecuación. Se calculó la incidencia de infección tras un periodo máximo de 30 días de incubación. Se evaluó la adecuación entre adecuación de la profilaxis e ISQ mediante el riesgo relativo (RR). RESULTADOS: Se incluyeron 595 pacientes en el estudio. La adecuación global fue del 93,8%. La mayor causa de incumplimiento fue el inicio de la profilaxis con un 3,0%. La incidencia de infección de sitio quirúrgico fue del 1,0%. No se encontró relación entre la inadecuación de la profilaxis antibiótica y la infección de sitio quirúrgico (RR=1,01; IC95%: 1,00-1,02). No se encontró relación en el riesgo de infección entre la cirugía laparoscópica y la cirugía abierta (RR=0,37; IC95%: 0,08-1,98). CONCLUSIONES: La adecuación de la profilaxis antibiótica fue alta. La incidencia de infección de sitio quirúrgico fue baja y la adecuada cumplimentación de la profilaxis antibiótica en la cirugía de próstata permite reducir la incidencia de infección de sitio quirúrgico.

Incidencia de infección de sitio quirúrgico y factores de riesgo en cirugía de recto. Estudio de cohortes prospectivo / Incidence of surgical site infection and risk factors in rectal surgery: A prospective cohort study

INTRODUCCIÓN: La infección de sitio quirúrgico (ISQ) es la principal causa de infección nosocomial. El objetivo de este trabajo fue estudiar la incidencia de ISQ y evaluar los factores de riesgo que la determinan en pacientes intervenidos de cirugía de recto. MÉTODOS: Estudio de cohortes prospectivo, realizado de enero del 2013 a diciembre del 2016. Se recogieron variables relacionadas con el paciente, la intervención quirúrgica y la infección. Se calculó la incidencia de infección tras un periodo máximo de 30 días de incubación. Se evaluó el efecto de los diferentes factores de riesgo en la infección con la odds ratio ajustada con un modelo de regresión logística. RESULTADOS: El estudio incluyó a 154 pacientes, con una edad media de 69,5±12 años. Las comorbilidades más habituales fueron diabetes mellitus (24,5%), enfermedad pulmonar obstructiva crónica (17%) y obesidad (12,6%). La incidencia global de ISQ durante el periodo de seguimiento fue de 11,9% (IC95%: 7,8-17,9) y el microorganismo más frecuente fue Escherichia coli (57,9%). Los factores de riesgo asociados a la infección quirúrgica en el análisis univariante fueron la transfusión sanguínea, el uso de drenajes y la administración de fármacos vasoactivas (p < 0,05). CONCLUSIONES: La incidencia de ISQ en cirugía de recto fue baja. Es muy importante evaluar la incidencia de infección y tratar de identificar los posibles factores de riesgo de infección. Recomendamos la implantación de programas prospectivos de vigilancia y control de la infección hospitalaria

INTRODUCTION: Surgical site infection (SSI) is the main cause of nosocomial infection in Spain. The aim of this study was to analyze the incidence of SSI and to evaluate its risk factors in patients undergoing rectal surgery. METHODS: Prospective cohort study, conducted from January 2013 to December 2016. Patient, surgical intervention and infection variables were collected. Infection rate was calculated after a maximum period of 30 days of incubation. The effect of different risk factors on infection was assessed using the odds ratio adjusted by a logistic regression model. RESULTS: The study included 154 patients, with a mean age of 69.5 ± 12 years. The most common comorbidities were diabetes mellitus (24.5%), chronic obstructive pulmonary disease (17%) and obesity (12.6%). The overall incidence of SSI during the follow-up period was 11.9% (CI95%: 7.8-17.9) and the most frequent microorganism was Escherichia coli (57.9%). Risk factors associated with surgical wound infection in the univariate analysis were blood transfusion, drain tubes and vasoactive drug administration (P<.05). CONCLUSIONS: The incidence of SSI in rectal surgery was low. It is crucial to assess SSI incidence rates and to identify possible risk factors for infection. We recommend implementing surveillance and hospital control programs

Incidence of surgical site infection and risk factors in rectal surgery: A prospective cohort study. / Incidencia de infección de sitio quirúrgico y factores de riesgo en cirugía de recto. Estudio de cohortes prospectivo.

INTRODUCTION: Surgical site infection (SSI) is the main cause of nosocomial infection in Spain. The aim of this study was to analyze the incidence of SSI and to evaluate its risk factors in patients undergoing rectal surgery. METHODS: Prospective cohort study, conducted from January 2013 to December 2016. Patient, surgical intervention and infection variables were collected. Infection rate was calculated after a maximum period of 30 days of incubation. The effect of different risk factors on infection was assessed using the odds ratio adjusted by a logistic regression model. RESULTS: The study included 154 patients, with a mean age of 69.5±12 years. The most common comorbidities were diabetes mellitus (24.5%), chronic obstructive pulmonary disease (17%) and obesity (12.6%). The overall incidence of SSI during the follow-up period was 11.9% (CI95%: 7.8-17.9) and the most frequent microorganism was Escherichia coli (57.9%). Risk factors associated with surgical wound infection in the univariate analysis were blood transfusion, drain tubes and vasoactive drug administration (P<.05). CONCLUSIONS: The incidence of SSI in rectal surgery was low. It is crucial to assess SSI incidence rates and to identify possible risk factors for infection. We recommend implementing surveillance and hospital control programs.

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

Introducción: La infección de herida quirúrgica (IHQ) es la principal causa de infección nosocomial en pacientes quirúrgicos, siendo la profilaxis antibiótica uno de los factores más importantes para su prevención. En este trabajo se evaluó la adecuación de la profilaxis antibiótica en la artroplastia de cadera de acuerdo a la pauta establecida en nuestro centro y el efecto en la IHQ. Material y métodos. Se realizó un estudio de cohortes prospectivo entre enero de 2011 y diciembre de 2016. Se evaluó el grado de adecuación de la profilaxis antibiótica en cirugía de artroplastia de cadera. Se estudió la incidencia de IHQ tras un periodo máximo de 90 días. El efecto de la inadecuación de la profilaxis antibiótica en la incidencia de IHQ se evaluó con el riesgo relativo (RR) ajustado mediante un modelo de regresión logística. Resultados. Se incluyeron un total de 681 pacientes. La incidencia global de IHQ fue del 4% (IC 95%: 2,5-5,5). La profilaxis antibiótica se administró en el 99% de los casos, con una adecuación al protocolo del 74%. La causa más frecuente de inadecuación fue la duración de la profilaxis, con un 22,2% (149 pacientes). El efecto de la inadecuación de la profilaxis sobre la incidencia de infección fue de RR ajustado =0,47; IC95%: 0,19-1,17) (p>0,05). Conclusiones. La adecuación de la profilaxis antibiótica fue alta. No se encontró asociación entre adecuación de la profilaxis y la incidencia de infección en artroplastia de cadera. La vigilancia de la infección quirúrgica permite medir su incidencia y evaluar sus factores de riesgo

Introduction. 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. Material and 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 RR adjusted =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

Rates of Surgical Site Infection in Cholecystectomy: Comparison between a University Teaching Hospital, Madrid Region, Spain, and USA Rates.

BACKGROUND: There are many factors that can influence surgical site infections (SSI) in cholecystectomies. Incidence of cholecystectomy SSI was studied and compared with the incidence in Madrid Region, Spain, and the United States. METHODS: A prospective cohort study was conducted which included all patients who underwent gallbladder surgery for 5 consecutive years, at the Alcorcón Foundation University Teaching Hospital. SSI incidence rate was calculated. An association between risk factors and SSI incidence was assessed with the relative risk (RR). Infection rates were compared to those in the Madrid Region and to the overall Spanish and United States rates using the standardized infection ratio (SIR). RESULTS: The study included 1532 patients. Cumulative overall SSI was 1.96% (95% confidence interval [CI]: 1.3-2.7). The SIR was 0.89 with respect to the Madrid Region, 0.77 with respect to Spain's rate, and 1.77 with respect to the United States' rate. A laparoscopic route protected against infection (RR = 0.43; 95% CI: 0.2-0.9). Razor shaving in surgical preparation, duration of surgery, and neoplasm increased SSI incidence. CONCLUSIONS: SSI incidence rates among cholecystectomized patients at our hospital are higher than rates in the United States. A laparoscopic route protected against SSI.

[Effect of compliance with an antibiotic prophylaxis protocol in surgical site infections in appendectomies. Prospective cohort study]. / Efecto de la adecuación a protocolo de la profilaxis antibiótica en la incidencia de infección quirúrgica en apendicectomías. Estudio de cohortes prospectivo.

BACKGROUND: Antibiotic prophylaxis is the most suitable tool for preventing surgical site infection. This study assessed compliance with antibiotic prophylaxis in surgery for acute appendicitis, and the effect of this compliance on surgical site infection. MATERIAL AND METHODS: Prospective cohort study to evaluate compliance with antibiotic prophylaxis protocol in appendectomies. An assessment was made of the level of compliance with prophylaxis, as well as the causes of non-compliance. The incidence of surgical site infection was studied after a maximum incubation period of 30 days. The relative risk adjusted with a logistic regression model was used to assess the effect of non-compliance of prophylaxis on surgical site infection. RESULTS: The study included a total of 930 patients. Antibiotic prophylaxis was indicated in all patients, and administered in 71.3% of cases, with an overall protocol compliance of 86.1%. The principal cause of non-compliance was time of initiation. Cumulative incidence of surgical site infection was 4.6%. No relationship was found between inadequate prophylaxis compliance and infection (relative risk=0.5; 95% CI: 0.1-1.9) (P>.05). CONCLUSIONS: Compliance of antibiotic prophylaxis was high, but could be improved. No relationship was found between prophylaxis compliance and surgical site infection rate.