Caracterização dos pacientes internados por infecção odontogênica em unidade hospitalar / Characterization of patients hospitalized for odontogenic infection in a hospital unit / Caracterización de pacientes hospitalizados por infección odontogénica en una unidad hospitalaria

Introdução: As infecções orais e maxilofaciais de origem odontogênica representam uma área relevante do conhecimento médico, pois podem evoluir para quadros de alta morbidade e mortalidade. Objetivo: Avaliar o perfil dos pacientes atendidos com diagnostico de infecção de origem odontogênica em um hospital público de Mato Groso do Sul. Métodos: Trata-se de um estudo retrospectiva do tipo observacional e transversal que consistiu na análise de 68 prontuários de pacientes com diagnostico de infecção odontogênica, no período de março de 2019 a fevereiro de 2022. Resultados e Conclusão: Os resultados apontam para uma incidência de infecção odontogênica em 39,70% para a população jovem entre 16 a 28 anos, com sintomas como edema em 82,35% dos casos, seguidos de trismo 51,47% e disfagia 17,64%, uma média de internação de 6,1 dias e necessidade de traqueostomia em 10,29% dos casos. Deste modo, o cirurgião dentista em frente a processos agudos de infecção odontogênica exerce a função primordial do reconhecimento dos sintomas e intervenção precoce evitando seu agravamento... (AU)

Introduction: Oral and maxillofacial infections of odontogenic origin represent a relevant area of medical knowledge, as they can evolve into cases of high morbidity and mortality. Objective: To evaluate the profile of patients treated with a diagnosis of infection of odontogenic origin in a public hospital in Mato Groso do Sul. Methods: This is a retrospective observational and cross-sectional study that consisted of analyzing 68 medical records of patients diagnosed with odontogenic infection, from March 2019 to February 2022. Results and Conclusion: The results point to an incidence of odontogenic infection in 39.70% for the young population between 16 and 28 years old, with symptoms such as edema in 82.35% of cases, followed by trismus 51.47% and dysphagia 17.64%, an average hospital stay of 6 ,1 days and need for tracheostomy in 10.29% of cases. In this way, the dental surgeon, faced with acute pro[1]cesses of odontogenic infection, plays the primary role of recognizing the symptoms and early intervention, preventing their aggravation... (AU)

Introducción: Las infecciones orales y maxilofaciales de origen odontogénico representan un área relevante del conocimiento médico, ya que pueden evolucionar hacia casos de alta morbilidad y mortalidad. Objetivo: Evaluar el perfil de los pacientes atendidos con diagnóstico de infección de origen odontogénico en un hospital público de Mato Groso do Sul. Métodos: Se trata de un estudio observacional retrospectivo y transversal que consistió en analizar 68 historias clínicas de pacientes con diagnóstico de infección odontogénica, desde marzo de 2019 hasta febrero de 2022. Resultados y Conclusión: Los resultados apuntan a una incidencia de infección odontogénica del 39,70%. para la población joven entre 16 y 28 años, con síntomas como edema en el 82,35% de los casos, seguido de trismo 51,47% y disfagia 17,64%, estancia hospitalaria promedio de 6,1 días y necesidad de traqueotomía en el 10,29% de los casos . De esta forma, el cirujano dentista, ante procesos agudos de infección odontogénica, realiza la función primordial de reconocer los síntomas e intervenir precozmente, evitando su agravamiento... (AU)

Antimicrobial prescription and bacterial resistance in a Brazilian Intensive Care Unit / Prescrição antimicrobiana e resistência bacteriana em uma Unidade de Terapia Intensiva Brasileira / Prescripción antimicrobiana y resistencia bacteriana en una Unidad de Cuidados Intensivos Brasileña

Background and Objectives: antimicrobial resistance is one of the main public health concerns worldwide. Intensive Care Units have a high prevalence of resistant microorganisms and infections, and the rational use of antibiotics is one of the main strategies for tackling this problem. This work aimed to describe patterns associated with antimicrobial drugs as well as the resistance profile of microorganisms. Methods: an observational study was carried out using data from patients hospitalized in the Intensive Care Unit who used antimicrobial agents. Results: respiratory and cardiological causes were the most frequent reasons for admission, with cephalosporins (29.02%), with penicillin (25.84%) and macrolides (16.10%) being the most used classes of antibiotics. The predominant microorganisms were Klebsiella pneumoniae (13.98%), Staphylococcus aureus (13.44%) and Acinetobacter baumannii (11.83%). Urine cultures and tracheal aspirate were the culture tests with the highest growth of gram-negative microorganisms. Patients with bacteria isolated in tracheal aspirate had longer hospital stays; 20 patients had positive surveillance cultures; and the mortality rate found was 55.45%. Conclusion: the study combined the institution's epidemiological profile with patient characteristics, isolated microorganisms and outcomes.(AU)

Justificativa e Objetivos: a resistência antimicrobiana é uma das principais preocupações de saúde pública em todo o mundo. As Unidades de Terapia Intensiva têm uma alta prevalência de microorganismos resistentes e infecções, e o uso racional de antibióticos é uma das principais estratégias para lidar com esse problema. Este trabalho teve como objetivo descrever padrões associados a medicamentos antimicrobianos, bem como o perfil de resistência dos microorganismos. Métodos: foi realizado um estudo observacional utilizando dados de pacientes hospitalizados na Unidade de Terapia Intensiva que utilizaram agentes antimicrobianos. Resultados: causas respiratórias e cardiológicas foram os motivos mais frequentes de admissão, com cefalosporinas (29,02%), penicilina (25,84%) e macrolídeos (16,10%) sendo as classes de antibióticos mais utilizadas. Os microorganismos predominantes foram Klebsiella pneumoniae (13,98%), Staphylococcus aureus (13,44%) e Acinetobacter baumannii (11,83%). Culturas de urina e aspirado traqueal foram os testes de cultura com maior crescimento de microorganismos gram-negativos. Pacientes com bactérias isoladas no aspirado traqueal tiveram internações mais longas; 20 pacientes tiveram culturas de vigilância positivas; e a taxa de mortalidade encontrada foi de 55,45%. Conclusão: o estudo combinou o perfil epidemiológico da instituição com características dos pacientes, microorganismos isolados e resultados.(AU)

Antecedentes y Objetivos: la resistencia antimicrobiana es una de las principales preocupaciones de salud pública en todo el mundo. Las Unidades de Cuidados Intensivos tienen una alta prevalencia de microorganismos resistentes e infecciones, y el uso racional de antibióticos es una de las principales estrategias para abordar este problema. Este trabajo tuvo como objetivo describir patrones asociados con medicamentos antimicrobianos, así como el perfil de resistencia de los microorganismos. Métodos: se llevó a cabo un estudio observacional utilizando datos de pacientes hospitalizados en la Unidad de Cuidados Intensivos que utilizaron agentes antimicrobianos. Resultados: las causas respiratorias y cardiológicas fueron las razones más frecuentes de admisión, con cefalosporinas (29,02%), penicilina (25,84%) y macrólidos (16,10%) siendo las clases de antibióticos más utilizadas. Los microorganismos predominantes fueron Klebsiella pneumoniae (13,98%), Staphylococcus aureus (13,44%) y Acinetobacter baumannii (11,83%). Los cultivos de orina y el aspirado traqueal fueron las pruebas de cultivo con mayor crecimiento de microorganismos gramnegativos. Los pacientes con bacterias aisladas en el aspirado traqueal tuvieron estancias hospitalarias más largas; 20 pacientes tuvieron cultivos de vigilancia positivos; y la tasa de mortalidad encontrada fue del 55,45%. Conclusión: el estudio combinó el perfil epidemiológico de la institución con las características de los pacientes, los microorganismos aislados y los resultados.(AU)

Uso de antimicrobianos en la unidad de cuidados intensivos de un hospital público de Loreto / Use of antimicrobials in the intensive care unit of a Loreto public hospital

RESUMEN Introducción. El uso inapropiado de antimicrobianos en las unidades de cuidados intensivos (UCI) contribuye a la resistencia bacteriana. Objetivo. El propósito del presente estudio fue medir el uso y tipo de antimicrobianos en los pacientes hospitalizados en la Unidad de Cuidados Intensivos del Hospital Regional de Loreto (HRL). Métodos. Estudio de tipo descriptivo. Revisamos 120 historias clínicas en pacientes de UCI-HRL desde enero a junio 2023. Resultados. La mayoría de los pacientes usaron antimicrobianos (74,2%), indicados por shock séptico (42,7%), de 1 a 3 antimicrobianos (93,2%), con terapia de 1 a 3 días (45%). Del total de antimicrobianos usados, la mayor proporción fueron bactericidas 89 (90,4%), de la familia de cefalosporinas (33,1%) y carbapenémicos (23,5%); los fármacos más empleados fueron ceftriaxona (26,5%) y meropenem (21,1%) por vía intravenosa (90,4%). Conclusión. La mayor proporción de pacientes hospitalizados usan antimicrobianos de la familia de cefalosporinas y carbapenémicos.

ABSTRACT Introduction. Inappropriate use of antimicrobials in the Intensive Care Unit (ICU) contributes to bacterial resistance. Objective. The purpose of the present study was to measure the use and type of antimicrobials in patients hospitalized in the Intensive Care Unit of the Loreto Regional Hospital (HRL). Methods. Descriptive study. We reviewed 120 medical records in ICU-HRL patients from January to June 2023. Results. Most patients used antimicrobials (74.2%), indicated for septic shock (42.7%), 1 to 3 antimicrobials (93.2%), with therapy of 1 to 3 days (45%). Of the total number of antimicrobials used, the greatest proportion were bactericides 89 (90.4%), from the cephalosporin family (33.1%) and carbapenemics (23.5%); the most commonly used drugs were ceftriaxone (26.5%) and meropenem (21.1%) by the intravenous route (90.4%). Conclusion. The highest proportion of hospitalized patients use antimicrobials of the cephalosporin and carbapenemics family.

The impact of synthetic bone grafting for tissue regeneration: an in vivo study

Aims: This study aimed to examine the biological response of synthetic nanocomposite material on canine mandibular bone. Methods: Nine healthy adult male local breed dogs aged 12 to 18 months and weighing 10.2 to 15.2 kg were used in the study. Based on healing intervals of 1 and 2 months, the dogs were divided into 2 groups. Each group had 3 subgroups with 3 dogs each. The division was based on the grafting material used to fill the created defect: an empty defect (Control-ve), Beta-Tricalcium Phosphate, and nanocomposite (Beta-Tricalcium Phosphate and nanosilver 1%) . Surgery started after the dogs were anaesthetized. The surgical procedure began with a 5 cm parallel incision along the mandible's lower posterior border. After exposing the periosteum, a three 5mm-diameter, 5-mmdeep critical-size holes were made, 5mm between each one. Each group's grafting material had independent 3 holes. The defects were covered with resorbable collagen membranes followed by suturing of the mucoperiosteal flap. Results: Total densitometric analysis showed no significant differences between groups at 1-month intervals, with the nanocomposite group having a higher mean rank (165.66± 31.21) in comparison to other groups while at 2 months intervals that there was a highly significant difference between three groups as the P-value was (0.000) with the nanocomposite group having a higher mean rank (460.66± 26.40). Conclusions: In the current study, the use of nanocomposites improved osteoconductivity by accelerating new bone formation. Moreover, the encorporation of nanosilver enhanced growth factor activity. These attributes make nanocomposites a promising material for enhancing the bone healing process

Antibiotics prophylaxis at the time of catheter removal after radical prostatectomy: a systematic review of the literature and meta-analysis

Purpose: To conduct a systematic literature review with meta-analysis to identify whether antibiotic prophylaxis after removal of the indwelling urinary catheter reduces posterior infections. Methods: A systematic literature review was conducted in the databases PubMed, Embase, Cochrane, Google Scholar, and Latin American and Caribbean Health Sciences Literature, using the keywords "antibiotics" AND "prostatectomy" AND "urinary catheter." Results: Three articles were identified having the scope of our review, with 1,040 patients, which were subjected to our meta-analysis revealing a marginally significant decrease in the risk of urinary infection after indwelling urinary catheter removal (odds ratio-OR = 0.51; 95% confidence interval-95%CI 0.27-0.98; p = 0.04; I2 = 0%). No difference was found regarding the presence of bacteriuria (OR = 0.39; 95%CI 0.12-1.24; p = 0.11; I2 = 73%). Conclusions: In our meta-analysis, there was a significant decrease in urinary tract infection with antibiotic prophylaxis after indwelling urinary catheter removal following radical prostatectomy.

Cytotoxicity evaluation, antibacterial effect, and degree of conversion of QAM-containing adhesives

Abstract The aim of this study was to evaluate the influence of adding quaternary ammonium methacrylates (QAMs) to experimental adhesives by assessing the degree of conversion (DC), cytotoxicity against keratinocytes and fibroblasts, and antibacterial activity against biofilm formation. Two QAMs were added to an experimental adhesive: dimethylaminododecyl methacrylate bromododecane (DMADDM) or dimethylaminododecyl methacrylate bromohexadecane (DMAHDM) at three concentrations each: 1, 2.5, and 5 wt.%. Experimental adhesive without QAMs (control group) and commercially available Transbond XT Primer (3M Unitek, Monrovia, California, USA) were used for comparisons. The adhesives were tested for DC, cytotoxicity against keratinocytes and fibroblasts, and antibacterial activity against biofilm formation. DC, cytotoxicity against fibroblasts, and antibacterial activity were analyzed using one-way ANOVA and Tukey's multiple comparisons. Cytotoxicity against keratinocytes was evaluated using the Kruskal Wallis and Dunn's post-hoc (α = 5%) tests. Transbond showed lower DC as compared to 5% DMAHDM, 1% DMADDM, and 5% DMADDM (p < 0.05). However, all groups presented proper DC when compared to commercial adhesives in the literature. In the evaluation of cytotoxicity against keratinocytes, Transbond induced higher viability than 2.5 wt.% groups (p < 0.05). Against fibroblasts, Transbond induced higher viability as compared to 5 wt.% groups (p < 0.05). DMAHDM at 5 wt.% reduced biofilm formation when compared to all the other groups (p < 0.05). Despite their cytotoxic effect against keratinocytes, gingival fibroblasts showed higher viability. DMAHDM at 5 wt.% decreased Streptococcus mutans viability. The incorporation of DMAHDM at 5 wt.% may be a strategy for reducing the development of white spot lesions.

What is the epidemiological profile of acute hand infections at a hospital in sao paulo? / Qual o perfil epidemiológico de infecções agudas na mão num hospital filantrópico de são paulo?

ABSTRACT Objective: To determine the epidemiological profile of patients treated at a philanthropic hospital specialized in Orthopedics and Traumatology, located in a significant urban center, and evaluate the efficacy of initial empirical antibiotic treatment. Methods: Patients diagnosed with hand infections from September 2020 to September 2022 were included, excluding cases related to open fractures or post-surgical infections and those with incomplete medical records. The chi-square test was performed using STATISTICA ® software to correlate various variables. Results: A total of 34 patients participated, including 24 men and 10 women, with an average age of 41.9 years. Most male patients had Diabetes Mellitus, HIV, and drug addiction, and they resided in urban areas. Half of the patients did not report any apparent trauma. The most common infectious agent was Staphylococcus aureus*. Nearly 62% of patients required a change in the initial antibiotic regimen, with Penicillin being the most frequently substituted medication. Beta-lactam antibiotics and Quinolones were the most effective. Conclusion: These results suggest the importance of carefully evaluating the epidemiological profile of patients with acute hand infections and improving initial empirical treatment to ensure appropriate and effective therapy. Level of Evidence IV, Cross-Sectional Observational Study.

RESUMO Objetivo: Determinar o perfil epidemiológico de pacientes atendidos em um hospital filantrópico referência em Ortopedia e Traumatologia localizado em um centro urbano importante, e avaliar a eficácia do tratamento antibiótico empírico inicial. Métodos: Foram incluídos pacientes com diagnóstico de infecção na mão, atendidos no período de setembro de 2020 a setembro de 2022, excluindo-se casos relacionados a fraturas expostas ou pós-cirúrgicas e aqueles com prontuários incompletos. Realizou-se o teste do qui-quadrado, utilizando o software STATISTICA ® para correlacionar diversas variáveis. Resultados: Participaram do estudo 34 pacientes, sendo 24 homens e 10 mulheres, com média de idade de 41,9 anos. A maioria era de homens, com alta incidência de diabetes mellitus, HIV e drogadição, que residiam em áreas livres. Metade não relatou trauma evidente. O agente infeccioso mais comum foi o Staphylococcus aureus. Aproximadamente 62% dos pacientes precisaram de troca do esquema inicial de antibióticos, sendo a penicilina o medicamento mais frequentemente substituído. Os antibióticos beta-lactâmicos e quinolonas foram os mais eficientes. Conclusão: Esses resultados sugerem a importância de avaliar cuidadosamente o perfil epidemiológico dos pacientes com infecções agudas na mão e aprimorar o tratamento empírico inicial para garantir uma terapia adequada e eficaz. Nível de Evidência IV, Estudo Observacional Transversal.

Microbiological profile and antibiotic sensitivity of maxillofacial infections in an emergency hospital

Aim: To investigate the bacteriological profile of oral and maxillofacial infections and the pattern of sensitivity to a specific group of antibiotics in a reference emergency hospital in Brazil. Methods: This is a prospective cohort institutional study that studied patients affected by oral and/ or maxillofacial infections in a Brazilian emergency hospital, over a 12-month period, of different etiologies, through data collection, culture and antibiogram tests, and monitoring of the process of resolution of the infectious condition. The variables were analyzed using the chi-square and Mann-Whitney tests, using a significance level of 5%. Results: The sample consisted of 61 patients, 62.3% male. The mean age of participants was 34.3 years. Odontogenic infection was the most frequent etiology and the submandibular space was the most affected. The bacterial species Streptococcus viridans was isolated in 21.6% of cases. Levofloxacin, vancomycin and penicillin were the antibiotics with the highest frequency of bacterial sensitivity, while clindamycin and erythromycin showed the highest percentages of resistance. Conclusions: The results suggest that, among the most used antibiotics for the treatment of these infections, penicillin remains an excellent option of choice for empirical therapy

Aspectos epidemiológicos da utilização de medicamentos em odontologia / Epidemiological aspects of medication use in dentistry

Esta tese englobou a realização de três estudos, reportados em cinco artigos científicos, que abordaram a temática da utilização de medicamentos na Odontologia. O primeiro estudo consistiu em uma revisão sistemática, o segundo em um estudo transversal e o terceiro em análises de série temporal. A revisão sistemática (PROSPERO: CRD42020211226), teve como objetivo investigar a relação entre fatores sociodemográficos e a prescrição de opioides. As buscas foram conduzidas em oito bases eletrônicas: MEDLINE (PubMed), Embase, Scopus, Web of Science, LILACS, SciELO, Google Scholar e Open Grey. Dois pesquisadores, de forma independente, realizaram a seleção dos estudos (Cohen Kappa=0,80), extração dos dados e avaliação do risco de viés. A síntese dos resultados foi apresentada de forma narrativa. O segundo estudo, um estudo transversal, a partir de dados secundários analisou as interações medicamentosas potenciais envolvendo psicofármacos prescritos por cirurgiões-dentistas em Minas Gerais (MG) em 2017. Foram utilizados dados do Sistema Integrado de Gerenciamento da Assistência Farmacêutica (Sigaf), que forneceu informações sobre todos os medicamentos dispensados pelos serviços públicos de saúde, o que possibilitou identificar os indivíduos em uso concomitante de dois ou mais fármacos. Os fármacos foram agrupados, de acordo com Anatomical Therapeutic Chemical Classification System, e o número de Doses Diárias Definidas (DDD) contabilizadas. Indivíduos, independentemente da idade, em uso simultâneo de psicofármacos e outros medicamentos foram incluídos. Na sequência, as interações medicamentosas potenciais foram pesquisadas utilizando-se o IBM Micromedex® Drug Interactions. O terceiro estudo, uma análise de série temporal, objetivou descrever as tendências de prescrição de antibacterianos, anti-inflamatórios não esteroidais (AINE) e analgésicos no período de 2011 a 2021 em MG, buscando compreender possíveis associações com os indicadores dos serviços de saúde bucal. Foram estimados o número de DDD e DDD/1.000 habitantes/ano (desfecho) para cada município em MG. As covariáveis referiam-se a indicadores dos serviços, tais como cobertura da saúde bucal, estimativas de procedimentos odontológicos e frequência de dor de dente. Para a variável desfecho, foi aplicada uma transformação logarítmica, e modelos de regressão linear de séries temporais simples e múltipla foram empregados nas análises. Os resultados da revisão sistemática apontaram, com muito baixa certeza da evidência, que indivíduos mais jovens apresentavam maior probabilidade de receber prescrição de opioides do que os mais velhos. O estudo transversal revelou que a prevalência de interações medicamentosas potenciais foi de 24,8%, totalizando 648 casos, dos quais a maioria (n=438; 67,6%) era considerada de gravidade alta. A análise de série temporal evidenciou um aumento geral nas prescrições odontológicas durante o período estudado. O log do número de DDD/1.000 habitantes cresceu em média 0,35 (p<0,001) ao ano para os antibacterianos, 0,38 (p<0,001) para os AINE e 0,28 para os analgésicos entre os anos de 2011 e 2021.Os modelos de regressão indicaram que apenas a frequência de dor de dente se mostrou associada ao uso de AINE. Os resultados desses estudos apontaram aspectos importantes sobre o uso de medicamentos prescritos por cirurgiões-dentistas, ressaltando a necessidade de algumas estratégias para garantir a segurança dos pacientes.

This dissertation encompassed three studies, reported in five scientific manuscripts, that addressed the subject of medication use in Dentistry. The first study consisted of a systematic review, the second a cross-sectional study, and the third involved time-series analyses. The systematic review (PROSPERO: CRD42020211226), aimed to investigate the relationship between sociodemographic factors and opioid prescriptions. Searches were conducted in eight electronic databases: MEDLINE (PubMed), Embase, Scopus, Web of Science, LILACS, SciELO, Google Scholar, and Open Grey. Two researchers independently selected the studies (Cohen Kappa=0.80), extracted the data, and assessed the risk of bias. The results were presented in a narrative synthesis. The second study, a cross-sectional secondary data study, analyzed the potential drug-drug interactions involving psychotropic drugs prescribed by dental practitioners in Minas Gerais (MG) in 2017. Data from the Integrated Pharmaceutical Care Management System (Sigaf) were used; this system provided information about all medication dispensed by public health services, which enabled the identification of individuals on concomitant use of at least two drugs. Drugs were grouped according to the Anatomical Therapeutic Chemical Classification System, and the number of Defined Daily Doses (DDD) was calculated. Individuals, regardless of age, on concomitant use of psychotropics and other drugs were included. Afterwards, potential drug-drug interactions were screened using the IBM Micromedex® Drug Interactions database. The third study, a time-series analysis, aimed to describe trends of dentist-prescribed antibacterials, nonsteroidal anti-inflammatory drugs (NSAID), and analgesics from 2011 to 2021 in MG, as well as to examine possible associations with characteristics of oral health services. The number of DDD and DDD/1,000 inhabitants/year (outcome) was estimated for each municipality in MG. Covariates referred to characteristics of the health services, such as coverage of oral health care, estimates of dental procedures, and frequency of toothache. For the outcome variable, a logarithmic transformation was performed, and simple and multiple linear time-series regression models were used in the analysis. The findings of the systematic review showed, with very low certainty of evidence, that younger individuals were more likely to receive a prescription of opioids than older individuals. In the cross-sectional study, the prevalence of potential drug-drug interactions was 24.8%, accounting for 648 cases, with the majority (n=438; 67.6%) being of major severity. The time-series analysis showed an overall increase in dental prescriptions during the period under investigation. The log of the number of DDD/1,000 inhabitants increased by an average of 0.35 (p<0.001) per year for antibacterials, 0.38 (p<0.001) for NSAID, and 0.28 for analgesics between 2011 and 2021.Regression models indicated that only the frequency of toothache was associated with NSAID use. These results emphasized important aspects of medications prescribed by dental practitioners, underlining the need for strategies to ensure patient safety.

Clasificación de riesgo y tiempo puerta-antibiótico en pacientes con sospecha de sepsis / Risk classification and door-to-antibiotic time in patients with suspected sepsis / Classificação de risco e tempo porta-antibiótico no paciente com suspeita de sepse

Objetivo: evaluar la asociación entre la clasificación de riesgo y el tiempo puerta-antibiótico en pacientes con sospecha de sepsis. Método: estudio de cohorte retrospectivo, con una muestra de 232 pacientes con sospecha de sepsis atendidos en el departamento de emergencias. Se dividieron en 2 grupos: con y sin clasificación de riesgo. Una vez identificado el tiempo puerta-antibiótico, se realizó un análisis de varianza de un factor con la prueba post hoc de Bonferroni o la prueba t de Student independiente para variables cuantitativas continuas; pruebas de correlación de Pearson, correlación biserial puntual o correlación biserial para análisis de asociación; y procedimiento de bootstrap cuando no había distribución normal de variables. Para el análisis de los datos se utilizó el software Statistical Package for the Social Sciences. Resultados: el tiempo puerta-antibiótico no difirió entre el grupo que recibió clasificación de riesgo en comparación con el que no fue clasificado. El tiempo puerta-antibiótico fue significativamente más corto en el grupo que recibió una clasificación de riesgo de alta prioridad. Conclusión: no hubo asociación entre el tiempo puerta-antibiótico y si se realizó o no la clasificación de riesgo, ni con la hospitalización en enfermería y en unidad de cuidados intensivos, ni con la duración de la estancia hospitalaria. Se observó que cuanto mayor era la prioridad, más corto era el tiempo puerta-antibiótico.

Objective: to evaluate the association between risk classification and door-to-antibiotic time in patients with suspected sepsis. Method: retrospective cohort study, with a sample of 232 patients with suspected sepsis treated at the emergency department. They were divided into 2 groups: with and without risk classification. Once the door-to-antibiotic time was identified, one-way analysis of variance was performed with Bonferroni post hoc test or independent Student's t-test for continuous quantitative variables; Pearson correlation tests, point-biserial correlation or biserial correlation for association analyses; and bootstrap procedure when there was no normal distribution of variables. For data analysis, the Statistical Package for the Social Sciences software was used. Results: the door-to-antibiotic time did not differ between the group that received risk classification compared to the one that was not classified. Door-to-antibiotic time was significantly shorter in the group that received a high priority risk classification. Conclusion: there was no association between door-to-antibiotic time and whether or not the risk classification was performed, nor with hospitalization in infirmaries and intensive care units, or with the length of hospital stay. It was observed that the higher the priority, the shorter the door-to-antibiotic time.

Objetivo: avaliar a associação entre a realização de classificação de risco e o tempo porta-antibiótico no paciente com suspeita de sepse. Método: estudo de coorte retrospectivo, com amostra de 232 pacientes com suspeita de sepse atendidos no pronto atendimento. Foram distribuídos em 2 grupos: com e sem classificação de risco. Identificado o tempo porta-antibiótico, realizou-se análise de variância de um fator com post hoc de Bonferroni ou teste T-Student independente para variáveis quantitativas contínuas; testes de correlação de Pearson, correlação bisserial por pontos ou correlação bisserial para análises de associação; e procedimento de bootstrap quando não havia distribuição normal de variáveis. Para a análise dos dados foi utilizado o software Statistical Package for the Social Sciences. Resultados: o tempo porta-antibiótico não diferiu entre o grupo que recebeu classificação de risco comparado ao que não foi classificado. O tempo porta-antibiótico foi significativamente menor no grupo que recebeu classificação de risco de alta prioridade. Conclusão: não houve associação entre o tempo porta-antibiótico e a realização ou não da classificação de risco, tampouco com internação em enfermaria e em unidade de terapia intensiva, ou com o tempo de internação hospitalar. Observou-se que quanto maior a prioridade, menor o tempo porta-antibiótico.

Terapia con antibióticos versus apendicectomía en la apendicitis aguda no complicada: Una revisión sistemática y metaanálisis

Introducción: Existe una controversia acerca del mejor enfoque para el tratamiento de la apendicitis aguda no complicada. Este metaanálisis buscó evaluar la eficacia, recurrencia de la patología, presencia de complicaciones mayores, y duración de la estancia hospitalaria en adultos con apendicitis aguda no complicada. Materiales y Método: Se realizó una búsqueda sistemática de ensayos clínicos aleatorizados en las bases de datos PubMed, Scopus, Web of Science, Embase y Cochrane Library hasta finales de octubre del 2022. El riesgo de sesgo y calidad de los estudios incluidos en el estudio fueron evaluados mediante la herramienta RoB 2.0. de la Colaboración Cochrane. La síntesis de datos fue realizada a través del software Cochrane Review Manager (RevMan; version 5.3). Resultados: 6 estudios fueron incluidos, con un total de 1.862 pacientes. La probabilidad de presentar una mejoría clínica definitiva en el grupo que recibió antibioticoterapia fue menor (RR 0,5; IC95% 0,92-0,98; p = 0,004; IC2 = 44%). La probabilidad de presentar una recurrencia de la apendicitis en el grupo que recibió antibioticoterapia fue notablemente superior (RR 94,86; IC95% 30,73-292,81; p < 0,00001; IC2 = 0%). El grupo conservador presentó un menor riesgo de presentar una complicación mayor (RR 0,55; IC95% 0,36-0,85; p = 0,007; IC2 = 0%). El tratamiento conservador presentó una duración de la estancia hospitalaria superior que la apendicectomía (MD 0,34; IC95% 0,25-0,42; p < 0,00001; IC2 = 64%). Conclusiones: Esta revisión sistemática demuestra que, en términos de eficacia, recurrencia del cuadro y duración de la estancia hospitalaria, la antibioticoterapia es inferior a la apendicectomía en adultos con apendicitis aguda no complicada y superior en evitar la presencia de complicaciones mayores.

Introduction: There is controversy about the best approach for the treatment of uncomplicated acute appendicitis. This meta-analysis sought to assess efficacy, disease recurrence, presence of major complications, and length of hospital stay in adults with uncomplicated acute appendicitis. Materials and Method: A systematic search for randomized clinical trials was performed in the PubMed, Scopus, Web of Science, Embase, and Cochrane Library databases up to the end of October 2022. The risk of bias and quality of the studies included in the study were assessed. using the RoB 2.0 tool. of the Cochrane Collaboration. Data synthesis was performed using the Cochrane Review Manager software (RevMan; version 5.3). Results: 6 studies were included, with a total of 1.862 patients. The probability of presenting a definitive clinical improvement in the group that received antibiotic therapy was lower (RR 0.5; CI95% 0.92-0.98; p = 0.004; CI2 = 44%). The probability of presenting a recurrence of appendicitis in the group that received antibiotic therapy was notably higher (RR 94.86; 95%CI 30.73-292.81; p < 0.00001; CI2 = 0%). The conservative group presented a lower risk of presenting a major complication (RR 0.55; CI95% 0.36-0.85; p = 0.007; CI2 = 0%). Conservative treatment had a longer hospital stay than appendectomy (MD 0.34; 95%CI 0.250.42; p < 0.00001; CI2 = 64%). Conclusions: This systematic review shows that, in terms of efficacy, recurrence of the condition, and length of hospital stay, antibiotic therapy is inferior to appendectomy in adults with uncomplicated acute appendicitis, and superior in avoiding the presence of major complications.

Tratamiento antibiótico de elección en sepsis urinaria asociada a litiasis ureteral en Chile. Estudio multicéntrico / Antibiotic treatment of choice for urinary sepsis associated with ureteral lithiasis in Chile. Multicenter study

INTRODUCCIÓN: El uso de un esquema antibiótico inadecuado en sepsis aumenta significativamente la morbimortalidad. Este estudio presenta un reporte multicéntrico de susceptibilidad antibiótica en urosepsis asociada a ureterolitiasis, buscando proponer un esquema empírico óptimo para el medio nacional. MÉTODOS: Se realizó un estudio observacional prospectivo en 7 hospitales de 4 regiones del país. Se incluyeron pacientes con criterios de sepsis asociada a ureterolitiasis confirmada radiológicamente. Se registraron sus datos demográficos, signos vitales y laboratorio de ingreso, así como sus estudios microbiológicos y radiológicos, realizándose estadísticas descriptivas de los datos obtenidos. RESULTADOS: Se ingresaron 119 pacientes, de los cuales 52 cumplieron criterios de inclusión. 77% eran mujeres, con una edad promedio de 52 años. Se tomaron hemocultivos en el 48,7% de los casos y urocultivos en el 100%. El microorganismo más común fue Escherichia coli (73%), seguido por Proteus mirabilis (9,6%) y Klebsiella pneumoniae (3,9%). Hubo dos casos de bacterias gram positivas. El 100% de las bacterias gram negativas fueron sensibles a amikacina. CONCLUSIÓN: Los microorganismos encontrados en nuestra cohorte fueron similares a los de los estudios internacionales. Dado que el mayor nivel de susceptibilidad fue para amikacina, proponemos su uso como terapia empírica para la urosepsis asociada a ureterolitiasis en Chile. Siempre es necesario considerar los posibles efectos ne-frotóxicos de la amikacina. Se debe considerar una asociación de betalactámicos y glicopéptidos en pacientes con factores de riesgo de infecciones enterocócicas.

BACKGROUND: Inadequate antibiotic coverage in septic patients is associated with higher morbidity and mortality. This multicentric study reports antibiotic susceptibility in patients with ureterolithiasis-associated urosepsis, aiming to propose an optimal empirical therapy for this disease in the Chilean population. METHODS: The prospective cohort study included patients from 7 Chilean hospitals who presented with ureterolithiasis and met sepsis criteria. We analyzed demographic data, vital signs at admission, and microbiological and radiological exams. We used descriptive statistics for the analysis of collected data. Results: Initially, the study included 119 patients; 52 met the inclusion criteria. 77% were female, with a mean age of 52. 100% of the cohort had a urine culture taken at admission, whereas 48,7% had blood cultures. Escherichia Coli was the most common microorganism (73%), followed by Proteus Mirabilis (9.6%) and Klebsiella Pneumoniae (3.9%). Only two patients presented gram-positive pathogens. 100% of gram-negative bacteria were sensible to amikacin. CONCLUSION: The microorganisms found in our cohort were similar to those in international reports. Since the highest level of susceptibility was for amikacin, we propose its use as empirical therapy for urosepsis associated with ureterolithiasis in Chile. It is always necessary to consider the potential nephrotoxic effects of amikacin. An association of beta-lactams and glycopeptides should be considered in patients with risk factors for enterococcal infections.

Trends in the epidemiological and microbiological profiles of infectious keratitis in southeastern Brazil / Perfil epidemiológico e microbiológico das ceratites infecciosas no sudeste do Brasil

ABSTRACT Purpose: To investigate the antibiotic susceptibility as well as the clinical, epidemiological, and microbiological profiles of microbial keratitis. Methods: This was a longitudinal retrospective study, and we retrospectively reviewed medical and laboratory records from 2015 to 2019. Results: In total, 380 pathogens (321 bacteria and 59 fungi) were isolated from the corneas of 352 patients. Staphylococcus species (45%) were most abundant within the organisms that were isolated, followed by Pseudomonas (18.4%), fungi (15.5%), Streptococcus (7.9%), and Serratia species (3.2%). The isolated gram-positive bacteria were not resistant to amikacin or vancomycin, although 14.8% of the gram-positive isolates were resistant to ciprofloxacin (p<0.05). All the gram-negative isolates were susceptible to amikacin. Male patients represented 62.8% of the 129 cases with accessible clinical data. The mean age of the patients was 53.17 ± 21 years. The time to presentation (from onset of symptoms) was 14.9 ± 19.4 days (median: 7 days). Large ulcers (>5 mm in any dimension) were present in 49.6% (64 eyes) of the cases. The duration of treatment was 49 ± 45.9 days (median: 38 days). Direct ocular trauma was reported by 48 (37.2%) patients, and 15 patients (11.6%) reported using contact lenses. For 72 (55.8%) patients, topical treatment had been previously prescribed, and 16 (12.4%) patients reported using other classes of drugs. Hospitalizations were required for 79 (61.2%) patients, and in terms of major complications, 53 (41.1%) patients had corneal perforations. A total of 40 patients (31%) underwent tectonic penetrating keratoplasty, and 28 (21.7%) developed secondary glaucoma. A progression to endophthalmitis occurred in 8 (6.2%) patients, with 50% of those patients' (3.1% of the total) endophthalmitis evolving to evisceration. The patients' microbial keratitis was largely treated empirically, with 94 (72.9%) patients prescribed moxifloxacin and 56 (43.4%) prescribed ciprofloxacin before receiving their culture results. Conclusions: For the most part, our hospital treated patients with severe microbial keratitis. Despite identifying gram-positive bacteria in most of the isolates, we also frequently identified gram-negative rods and fungi. Our susceptibility results support prescribing a combination of vancomycin and amikacin as an effective empirical therapeutic regimen to treat microbial keratitis.

RESUMO Objetivo: Investigar a susceptibilidade a antibió­ticos, o perfil clínico, epidemiológico e microbiológico das ce­ratites infecciosas. Métodos: Estudo retrospectivo longitu­dinal. Registros médicos e laboratoriais de 2015 a 2019 fo­ram revisados retrospectivamente. Resultados: Trezentos e oitenta patógenos (321 bactérias e 59 fungos) foram isolados das córneas de 352 pacientes. As espécies de Staphylococcus foram os microorganismos mais isolados (45%), seguidos de Pseudomonas (18,4%), fungos (15,5%), Streptococcus (7,9%) e Serratia (3,2%). Não houve resistência das bactérias Gram-positivas à amicacina ou vancomicina, enquanto 14,8% isolados Gram-positivos foram resistentes à ciprofloxacina (p<0,05). Todos os organismos Gram-negativos eram suscetíveis à amicacina. Pacientes do sexo masculino representaram 62,8% de 129 casos com dados clínicos acessíveis. A média de idade foi 53,17 ± 21 anos. O tempo até a apresentação (desde o início dos sintomas) foi de 14,9 ± 19,4 dias (mediana: 7 dias). Úlceras grandes (>5mm em qualquer extensão) representaram 49,6% (64 olhos) dos casos. A duração do tratamento foi de 49 ± 45,9 dias (mediana: 38 dias). Trauma ocular direto foi relatado por 48 (37,2%) pacientes e uso de lentes de contato por 15 (11,6%) pacientes. Foi prescrito tratamento prévio para 72 (55.8%) pacientes. Outras classes de medicamentos foram prescritas para 16 (12.4%). Setenta e nove (61,2%) pacientes tiveram que ser hospitalizados. Como complicações maiores, 53 (41,1%) pacientes apresentaram perfuração corneana, 40 pacientes (31%) foram submetidos à ceratoplastia penetrante tectônica e 28 (21,7%) desenvolveram glaucoma secundário. Oito pacientes (6,2%) evoluíram para endoftalmite. O tratamento empírico da ceratite microbiana foi amplamente empregado, com 94 (72,9%) pacientes em uso de moxifloxacina e 56 (43,4%) em uso de ciprofloxacina antes do resultado da cultura. Conclusões: Nosso hospital tratou predominantemente de pacientes com úlceras microbianas graves. Embora bactérias Gram-po­sitivas constituíssem a maioria dos isolados, bacilos e fungos Gram-negativos também foram frequentemente identificados nas ceratites microbianas. Os resultados de suscetibilidade sugerem a combinação de vancomicina e amicacina como um regime terapêutico empírico eficaz para essa condição grave com risco de perda visual permanente.

Desensibilización exitosa a Colistina en paciente peruano con Fibrosis quística / Successful desensitization to colistin in a Peruvian patient with cystic fibrosis

RESUMEN Introducción: La desensibilización farmacológica induce un estado temporal de hiposensibilidad a un medicamento que se realiza a pacientes con reacciones mediadas por Inmunoglobulina E. Reporte de caso: Presentamos el caso de un paciente con exacerbación respiratoria de fibrosis quística que presentó hipersensibilidad inmediata a colistina, un antibiótico esencial para su tratamiento, tanto por la sensibilidad del microorganismo, como la falta de disponibilidad de otros medicamentos. Se realizó el procedimiento en Unidad de Cuidados Intensivos de forma exitosa y el paciente completó el esquema del tratamiento. Conclusión: Actualmente el paciente se encuentra en tratamiento específico para su enfermedad de fondo y no ha presentado nuevos episodios de exacerbación ni neumonías.

ABSTRACT Introduction: Pharmacological desensitization induces a temporary hyposensitivity to the causative drug in patients with Immunoglobulin E-mediated drug reactions. Case of report: We present the case of a patient with respiratory exacerbation of cystic fibrosis who presented immediate hypersensitivity to colistin, an essential antibiotic for its treatment-both due to the sensitivity of the microorganism and the lack of availability of other drugs. The procedure was successfully performed in the Intensive Care Unit, and the patient completed the treatment schedule. Conclusion: Currently, the patient is undergoing specific treatment for his underlying disease and has not presented any new episodes of exacerbation or pneumonia.

One week pre-operative oral antibiotics for percutaneous nephrolithotomy reduce risk of infection: a systematic review and meta-analysis

ABSTRACT Purpose The aim of this meta-analysis is to assess the efficacy of extended dose of preoperative antibiotics to reduce infectious risk in patients undergoing percutaneous nephrolithotomy (PCNL). Materials and Methods A literature search for prospective case-control studies or randomized controlled trials was done. PICO framework was used. Population: adult patients that underwent to PCNL; Intervention: extended dose preoperative antibiotic prophylaxis before PCNL; Control: short dose preoperative antibiotic prophylaxis before PCNL; and Outcome: systemic inflammatory response syndrome (SIRS) or sepsis, fever after PCNL and positive intraoperative urine and stone culture. This meta-analysis was registered in PROSPERO database under the number: CRD42022359589. Results Three RCT and two prospective studies (475 patients) were included. SIRS/sepsis outcome was retrieved from all studies included. Seven days preoperative oral antibiotics for PCNL was a protective factor for developing SIRS/sepsis (OR 0.366, 95% CI 0.234 - 0.527, p < 0.001). There was no statistical association between seven-day use of antibiotics and fever (OR 0.592, 95% CI 0.147 - 2.388, p = 0.462). Patients who received seven days preoperative antibiotics had lower positive intraoperative urine culture (OR 0.284, 95% CI 0.120 - 0.674, p = 0.004) and stone culture (OR 0.351, 95% CI 0.185 - 0.663, p = 0.001) than the control group. Conclusion one week of prophylactic oral antibiotics based on local bacterial sensitivity pattern plus a dose of intravenous antibiotics at the time of surgery in patients undergoing PCNL reduces the risk of infection.

Evaluation of toxin-antitoxin genes, antibiotic resistance, and virulence genes in Pseudomonas aeruginosa isolates

SUMMARY OBJECTIVE: Toxin-antitoxin genes RelBE and HigBA are known to be involved in the formation of biofilm, which is an important virulence factor for Pseudomonas aeruginosa. The purpose of this study was to determine the presence of toxin-antitoxin genes and exoenzyme S and exotoxin A virulence genes in P. aeruginosa isolates and whether there is a relationship between toxin-antitoxin genes and virulence genes as well as antibiotic resistance. METHODS: Identification of the isolates and antibiotic susceptibilities was determined by a VITEK 2 (bioMérieux, France) automated system. The presence of toxin-antitoxin genes, virulence genes, and transcription levels were detected by real-time polymerase chain reaction. RESULTS: RelBE and HigBA genes were detected in 94.3% (82/87) of P. aeruginosa isolates, and exoenzyme S and exotoxin A genes were detected in all of the isolates (n=87). All of the isolates that harbor the toxin-antitoxin and virulence genes were transcribed. There was a significant increase in the RelBE gene transcription level in imipenem- and meropenem-sensitive isolates and in the HigBA gene transcription level in amikacin-sensitive isolates (p<0.05). There was a significant correlation between RelBE and exoenzyme S (p=0.001). CONCLUSION: The findings suggest that antibiotic resistance may be linked to toxin-antitoxin genes. Furthermore, the relationship between RelBE and exoenzyme S indicates that toxin-antitoxin genes in P. aeruginosa isolates are not only related to antibiotic resistance but also play an influential role in bacterial virulence. Larger collections of comprehensive studies on this subject are required. These studies should contribute significantly to the solution of the antibiotic resistance problem.

Clinical analysis of 71 patients with Pseudomonas aeruginosa bloodstream infection / 中国基层医药

Objective:To investigate the clinical manifestations and related risk factors of patients with Pseudomonas aeruginosa (PAE) bloodstream infection, and to provide references for clinical diagnosis and treatment of PAE bloodstream infection after combining with bacterial resistance condition. Methods:The clinical data and biological data of all patients with PAE bloodstream infection who received treatment in the Third Affiliated Hospital of Wenzhou Medical University from January 2019 to December 2020 were analyzed retrospectively. The independent influential factors of PAE bloodstream infection were analyzed using binary logistic regression. Results:Eighty-three patients had PAE bloodstream infection. Among them, 71 patients were included in the final analysis. Among the 71 patients, 36 patients (50.70%) had carbapenem-resistant Pseudomonas aeruginosa ( CRPA). Univariate analysis showed that the history of hospitalization within 90 days ( χ2 = 3.90, P = 0.048), indwelling catheterization ( χ2 = 5.08, P = 0.024), septic shock ( χ2 = 4.00, P = 0.046), mechanical ventilation ( χ2= 12.35, P < 0.001), deep venous catheter ( χ2 = 4.08, P = 0.043), acute physiology and chronic health evaluation score II ≥ 10 points ( χ2 = 4.06, P = 0.044), and multi-drug resistance ( χ2 = 11.75, P = 0.001) were the suspicious influential factors of CRPA bloodstream infection. Multivariate logistic regression analysis showed that mechanical ventilation was an independent risk factor for CRPA bloodstream infection ( OR = 7.43, 95% CI 1.182-46.674, P = 0.032). Multi-drug resistance was an independent risk factor for CRPA bloodstream infection ( OR = 5.842, 95% CI 1.520-22.450, P = 0.010). Conclusion:Mechanical ventilation and multi-drug resistance are the independent influential factors of CRPA bloodstream infection. Invasive operations such as mechanical ventilation should be avoided in the clinic.

The practice of clinical pharmacists participating in the management of prophylactic antibiotics during the perioperative period of thoracic surgery / 中国基层医药

Objective:To explore the role of clinical pharmacists participating in the management of prophylactic antibiotics during the perioperative period of thoracic surgery, and to evaluate the effects after participating in the practice.Methods:The use of antimicrobials during the perioperative period of thoracic surgery in Wenjiang Hospital of Sichuan Provincial People's Hospital in August 2019 (pre-practice) was retrospectively analyzed. The existing problems were summarized, and the possible causes of the existing problems were analyzed. The improvement measures were jointly developed by clinical pharmacists and physicians. Clinical pharmacists continued to manage the use of antimicrobials by means of medication order reviews, ward rounds for pharmacy service, and medication training. The use of prophylactic antibiotics during the perioperative period of thoracic surgery was compared between August 2019 (pre-practice group) and December 2019 (post-practice group) and the practical effect was evaluated.Results:Clinical pharmacists reviewed perioperative patients' medication orders once a day, ward rounds for pharmacy service twice a week, and medication training once a month. Twenty-two patients were enrolled before practice, and 26 patients were enrolled after practice. There were no significant differences in age, sex, body weight, operative time, type of surgical incision, and preventive use of antibiotics between the two groups (all P > 0.05). In the post-practice group, the appropriate time for preoperative administration was 100.0%, which was significantly higher than 88.2% in the pre-practice group. The reasonable rate of preoperative preventive drug selection was 100.0%, which was significantly higher than 44.4% in the pre-practice group ( χ2 = 17.50, P < 0.001). In the post-practice group, the duration of preventive medication was (1.82 ± 0.59) days, which was significantly shorter than (7.54 ± 3.25) days in the pre-practice group ( t = 11.97, P < 0.001). In the post-practice group, the cost of antibacterial drugs was 316.00(237.00,454.25) yuan, which was significantly lower than 1 136.00(391.81 , 2 184.65) yuan in the pre-practice group ( Z = -2.78, P < 0.05). The defined daily dose of antibiotics among inpatients was 2.67(2.00,3.42), which was significantly lower than 8.88(3.92 , 19.18) in the pre-practice group ( Z = -3.26, P < 0.05). There were no significant differences in the incidence of postoperative pulmonary infection and total length of hospital stay between the two groups (both P > 0.05). Conclusion:Clinical pharmacists participating in the management practice of perioperative prophylactic antibiotics in thoracic surgery can effectively promote the rational application of perioperative antibiotics, markedly improve the reasonable rate of prophylactic drug delivery, shorten the course of prophylactic drugs, reduce the cost of antibiotics, decrease the defined daily dose of antibiotics, without increasing the risk of postoperative pulmonary infection and the total length of hospital stay.

A case report of suppurative acromioclavicular arthritis and literature review / 中华骨科杂志

One case of suppurative acromioclavicular arthritis caused by Staphylococcus aureuswas reported. The patient was admitted to hospital due to swelling and pain in the right shoulder, limited mobility without no obvious cause.Through medical history, physical examination, imaging examination, and local tissue bacterial culture, it was confirmed that the infection was caused by Staphylococcus aureus. After surgery and anti infection treatment, satisfactory treatment results were achieved. Through literature review, 95 cases of suppurative acromioclavicular arthritis were retrieved and analyzed from 57 articles.Among them, 26 cases (27%) were infected with Staphylococcus aureus, including 3 cases of clearly identified methicillin-resistant Staphylococcus aureus, 2 cases of methicillin-sensitive Staphylococcus aureus, and 1 case of methicillin-resistant Staphylococcus epidermidis; 13 cases (14%) of Streptococcus; There were 6 cases (6%) of special pathogens, including 2 cases of Haemophilus parainfluenzae, 1 case of Candida, 1 case of Bacillus pallidum, 1 case of Mycobacterium avium, and 1 case of Pasteurella multocida; 50 cases (53%) of specific infections with pathogens were not clearly reported. Suppurative acromioclavicular arthritis has the characteristics of difficult early diagnosis, rapid disease progression, and strong destructiveness. MRI and ultrasound have high specificity and sensitivity in the diagnosis of this disease, and ultrasound can assist in obtaining joint fluid for examination. Early identification of the pathogen is the key to the treatment of this disease. Before identifying the pathogen, antibiotics should not be used arbitrarily. After diagnosis, timely anti infection treatment should be carried out, and if necessary, surgical debridement should be performed. The vast majority of patients can achieve satisfactory and accurate treatment results after active and standardized treatment.

Analysis of risk factors for failure in the treatment of early periprosthetic joint infection by debridement, antibioticsand implant retention combined with intra-articular injection of antibiotics / 中华骨科杂志

Objective:To analyze the risk factors leading to the failure of early periprosthetic joint infection (PJI) treated by debridement, antibiotics and implant retention (DAIR) combined with intra-articular injection of antibiotics.Methods:A total of 100 patients who received DAIR combined with intra-articular injection of antibiotics between January 2010 and October 2020 in the Department of Orthopaedics, First Affiliated Hospital of Xinjiang Medical University, were retrospectively analyzed. There were 47 males and 53 females, with an average age of 62.8±13.0 years (26-84 years). 75 patients were diagnosed as PJI after primary surgery while 25 PJI after revision or debridement, involving 41 hips and 59 knees. According to the clinical outcomes, the patients were divided into the cured group (78 cases) and the uncured group (22 cases). Risk factors were screened by univariate analysis on their gender, age, body mass index, site of infection (hip/knee), synovial white blood cell count, erythrocyte sedimentation rate (ESR), C reactive protein (CRP), time of infection, types of pathogenic bacteria (gram-positive bacteria, gram-negative bacteria or fungi), preoperative sinus tract and previous surgical history. For the factors with P<0.20, multivariate binary logistic regression analysis was performed to determine the independent risk factors. Kaplan-Meier survival curve was drawn and any cause that led to treatment failure was seen as the end point event. Calculate prosthetic survival time and 10-year survival rate. Results:The average follow-up was 59.8±40.6 months (0.3-129.0 months). The infection control rate of DAIR combined with intra-articular injection of antibiotics in the treatment of early PJI was 78% (78/100). The univariate analysis showed that the successful rate of non-fungal infection group (81%, 77/95) was significantly higher than the fungal infection group (20%, 1/5) and the successful rate of the group without previous surgical history (85.3%, 64/75) was significantly higher than that with previous surgical history (56.0%, 14/25, χ 2=7.07, P=0.008; χ 2=9.40, P=0.002). The multivariate binary Logistic regression analysis showed that fungal infection [ OR=0.08, 95% CI(0.01, 0.79), P=0.031] and history of previous surgical intervention [ OR=0.25, 95% CI(0.09, 0.73), P=0.001] were independent risk factors for treatment failure. Kaplan-Meier survival curves showed that the survival time of the prosthesis was 96.83±5.30 months, and the 10-year survival rate was 68.1%. Meanwhile, the survival rate of patients with fungal infection and previous surgical history was significantly lower than that of patients without fungal infection or previous surgical history, the difference was statistically significant (χ 2=15.49, P<0.001; χ 2=8.91, P=0.030). Conclusion:The time of PJI, bacterial virulence and species, and preoperative inflammatory indicators had no effect on the outcome of DAIR combined with intra-articular injection of antibiotics in the treatment of early PJI. However, DAIR was not recommended for patients with a history of surgical intervention and fungal infection.