Compromiso inmunológico en pacientes con síndrome de Down. Serie de casos / Immune compromise in patients with Down syndrome. A case series

El síndrome de Down, o trisomía 21, tiene una mortalidad mayor que la población general, debido principalmente a infecciones respiratorias. El objetivo de este trabajo es describir el compromiso inmunológico en una serie de casos de pacientes con síndrome de Down derivados a Inmunología por infecciones recurrentes o por hallazgo patológico de laboratorio, entre el 1 de junio de 2016 y el 31 de mayo de 2022. Se describe el compromiso de la inmunidad en 24 pacientes. Doce pacientes presentaron falla de respuesta a polisacáridos y recibieron quimioprofilaxis antibiótica y/o gammaglobulina sustitutiva. En 3 pacientes, se observó agammaglobulinemia con linfocitos B presentes y se indicó gammaglobulina sustitutiva. En 9 pacientes, se observó linfopenia T y en 1 paciente, compromiso inmune combinado.

Down syndrome, or trisomy 21, has a higher mortality than the general population, mainly due to respiratory tract infections. The objective of this study was to describe immune compromise in a series of cases of patients with Down syndrome referred to the Pediatric Immunology Section due to recurrent infections or pathological laboratory findings between 6/1/2016 and 5/31/2022. Here we describe immune compromise in 24 patients. Twelve patients failed to develop a polysaccharide response and received antibiotic chemoprophylaxis, or gamma globulin replacement therapy. Three patientsdeveloped agammaglobulinemia with presence of B cells and gamma globulin replacement therapy was indicated. Nine patients had T-cell lymphopenia and 1 patient, combined immune compromise.

Effectiveness of leukocyte- and platelet-rich fibrin in the management of medication-related osteonecrosis of the jaws ­ a systematic review / Efectividad de la fibrina rica en leucocitos y plaquetas en el tratamiento de osteonecrosis mandibular relacionada con medicamentos: una revisión sistemática

Background: Medication-related osteonecrosis of the jaw (MRONJ) is a rare, but significant adverse event primarily associated with the intake of antiresorptive and antiangiogenic medications. Although antiresorptive and antiangiogenic the-rapies improve life expectancy, particularly in cancer patients, MRONJ may hamper the patient's quality of life due to pain, discomfort, anxiety, depression, speech impairment, difficulty in swallowing and eating, frequent medical and dental evaluations and treatments, and the possibility of treatment discontinuation. Leukocyte­ and Platelet-rich Fibrin (L-PRF) is an autologous platelet aggregate that promotes wound healing by stimulating re-epithelialization, angiogenesis, and extracellular matrix production. Aim: The present systematic review aimed to compare the results in the published literature on whether L-PRF is an effective and predictable adjuvant to surgical debridement of necrotic bone for improving the healing efficacy in patients with MRONJ. Materials and Methods: The PubMed, Scopus, Cochrane, Science Direct, LILACS, and Web of Science databases were searched using the predetermined MeSH terms and eligibility criteria, and the search yielded a total of five articles. Two studies were retrospective, and three studies were case series. Results: Seventeen participants received a combination of surgical debridement, L-PRF membrane, and antibiotics. Complete wound healing was observed in 70% of the participants, and most of them healed without any complications. Conclusions: L-PRF as an adjuvant to surgical debridement of necrosed bone appears to have a positive association with the healing outcome in patients with MRONJ.

Introducción: La osteonecrosis mandibular relacionada con medicamentos (ONMRM) es un evento adverso raro pero significativo asociado principalmente con la ingesta de medicamentos antirresortivos y antiangiogénicos. Aunque las terapias antirresortivas y antiangiogénicas mejoran la esperanza de vida, particularmente en pacientes con cáncer, la ONMRM puede obstaculizar la calidad de vida del paciente debido a dolor, incomodidad, ansiedad, depresión, discapacidad del habla, dificultad para tragar y comer, evaluaciones y tratamientos médicos y dentales frecuentes, y la posibilidad de interrupción del tratamiento. La fibrina rica en plaquetas y leucocitos (L-PRF) es un agregado de plaquetas autólogo que promueve la curación de heridas al estimular la reepitelización, la angiogénesis y la producción de la matriz extracelular. Objetivo: La presente revisión sistemática tuvo como objetivo comparar los resultados en la literatura publicada sobre si L-PRF es un adyuvante efectivo y predecible al desbridamiento quirúrgico del hueso necrótico para mejorar la eficacia curativa en pacientes con ONMRM. Materiales y Métodos: Las bases de datos de PubMed, Scopus, Cochrane, ScienceDirect, LILACS y Web of Science se registraron utilizando los términos DeCS/MeSH predeterminados y los criterios de elegibilidad, y la búsqueda arrojó un total de cinco artículos. Dos estudios fueron retrospectivos, y tres estudios fueron series de casos. Resultado: Diecisiete participantes recibieron una combinación de desbridamiento quirúrgico, membrana L-PRF y antibióticos. Se observó curación completa de heridas en el 70% de los participantes, y la mayoría de ellos se curaron sin ninguna complicación. Conclusión: L-PRF como adyuvante para el desbridamiento quirúrgico del hueso necrótico parece tener una asociación positiva con el resultado de curación en pacientes con ONMRM.

Síntomas gastrointestinales, disfunción respiratoria, hepática y renal, principales factores asociados a letalidad por rickettsiosis trasmitida por garrapatas en Mexicali, Baja California, México / Gastrointestinal symptoms, respiratory, hepatic and renal dysfunction, main factors associated with lethality due to tickborne rickettsiosis in Mexicali, Baja California, Mexico

INTRODUCCIÓN: La rickettsiosis, enfermedad potencialmente mortal, es trasmitida por vectores como Rhipicephalus sanguineus, Dermacentor variabilis y D. andersonii, reservorios de Rickettsia rickettsii. En Baja California, México, es endémica, multifactorial, tiene alta letalidad, sus manifestaciones clínicas inespecíficas y ataque multisistémico dificultan el diagnóstico y tratamiento oportuno. OBJETIVO: Identificar los factores de riesgo asociados a la letalidad por rickettsiosis trasmitida por garrapatas en Mexicali, Baja California. PACIENTES Y MÉTODOS : Estudio observacional, analítico, transversal, retrospectivo, de 40 registros de pacientes con diagnóstico confirmado de rickettsiosis, periodo 2014 a 2018. Variables analizadas: sociodemográficas, clínicas, laboratorio clínico, evolución y desenlace. Se reportan frecuencias y medidas de asociación. RESULTADOS: 24 defunciones y 16 vivos. Más de 90% tuvo contacto conocido con garrapatas. Afectó en su mayoría a < 45 años en ambos grupos. La evolución antes del ingreso fue similar y la estancia hospitalaria fue mayor en los pacientes vivos (3,2 ± 4.7 vs 10,62 ± 7,6 p = 0,0002). Fiebre, cefalea, mialgias fueron predominantes. Datos asociados con letalidad: disfunción respiratoria (OR 38,33 IC95% 4,06-361,3 p < 0,0001), creatinina elevada (OR 15,4 IC95% 3,08-76,77 p < 0,0003), retardo del llenado capilar (OR 13,0 IC95% 2,73-61,78 p = 0,0005), dolor abdominal (OR 8,33, IC95% 1,90-36,44 p = 0,0029), AST (OR 7,5, IC95% 1,69-33,27 p = 0,005). CONCLUSIÓN: Esta enfermedad requiere de identificación temprana de factores que se asocian con letalidad para un tratamiento oportuno y adecuado.

BACKGROUND: Rickettsiosis, a potentially fatal disease, is transmitted by vectors such as Rhipicephalus sanguineus, Dermacentor variabilis and D. andersonii, reservoirs of Rickettsia rickettsii. In Baja California, Mexico, it is endemic, multifactorial, has high lethality, its nonspecific clinical manifestations and multisystem attack make diagnosis and timely treatment difficult. AIM: Identify the risk factors associated with lethality due to tick-transmitted rickettsiosis in Mexicali, Baja California. METHODS: Observational, analytical, cross-sectional, retrospective study of 40 records of patients with a confirmed diagnosis of rickettsiosis, period 2014 to 2018. Analyzed variables: sociodemographic, clinical, clinical laboratory, evolution and outcome. Frequencies and association measures are reported. RESULTS: 24 patients died and 16 survived. More than 90% had reported contact with ticks. It mostly affected ≤ 45 years in both groups. The evolution before admission was similar, and the hospital stay was longer in patients who lived (3.2 ± 4.7 vs 10.62 ± 7.6 p = 0.0002). Fever, headache, and myalgia are predominant. Data associated with lethality: respiratory dysfunction (OR 38.33 95% CI 4.06-361.3 p < 0.0001), elevated creatinine (OR 15.4 95% CI 3.08-76.77 p < 0.0003), delayed capillary refill (OR 13.0, 95% CI 2.73-61.78 p = 0.0005), abdominal pain (OR 8.33, 95% CI 1.90-36.44 p = 0.0029), AST (OR 7.5, 95% CI 1.69-33.27 p = 0.005). CONCLUSION: This disease requires early identification of factors that are associated with lethality for timely and adequate treatment.

Absceso hepático en Cali, Colombia / Liver abscess in Cali, Colombia

INTRODUCCIÓN: El absceso hepático (AH) es el tipo mas común de abscesos viscerales. Se estima que el perfil epidemiológico de esta enfermedad ha cambiado con el aumento de la resistencia de los microorganismos y el uso de nuevos medicamentos. OBJETIVO: Describir las características demográficas y clínicas de los pacientes hospitalizados con diagnóstico de AH en un hospital universitario del suroccidente colombiano. MÉTODOS: Se realizó un estudio observacional retrospectivo, en la Fundación Valle del Lili, Cali, Colombia. Se incluyeron pacientes mayores de 18 años con diagnóstico de AH hospitalizados entre 2011-2020. RESULTADOS: Se incluyeron 182 pacientes. La mediana de edad fUe 56 años (rango intercuartílico, 45-67) y 62,1% fueron hombres. El microrganismo mas común fue Klebsiella pneumoniae (17,6%). La mayoría requirió drenaje percutáneo (58,2%). El 58,8% tuvo un absceso único y 54,4% fue manejado en cuidados intensivos. El 7,1% de los pacientes falleció. Al comparar los casos que fueron manejados en cuidados intensivos vs. aquellos que no lo fueron, hubo más hepatomegalia (28,3 vs. 11,0%, p = 0,004), derrame pleural derecho (48,5 vs. 28,1%, p = 0,010), cirugía (42,4 vs. 13,4%, p < 0,001), falla terapéutica (22,2 vs. 7,3%, p = 0,007) y muerte (12,1 vs. 1,2%, p = 0,005) en los atendidos en UCI. CONCLUSIÓN: Las Enterobacterales son la principal causa de AH en nuestra población. La mortalidad ha disminuido, pero la hospitalización en cuidados intensivos sigue siendo alta.

BACKGROUND: Liver abscess (LA) is the most common type of visceral abscess. It is estimated that the epidemiological profile of this disease has changed with the increase in resistance and the use of new drugs. AIM: To describe the demographic and clinical characteristics of hospitalized patients with a diagnosis of LA in a university hospital in the southwestern region of Colombia. METHODS: A. retrospective observational study was conducted at Fundación Valle del Lili, Cali, Colombia. Patients older than 18 years with a diagnosis of LA hospitalized between 2011-2020 were included. RESULTS: A total of 182 patients were included. The median age was 56 years (interquartile range, 45-67) and 62.1% were men. The most common microorganism was Klebsiella pneumoniae (17.6%). The majority required percutaneous drainage (58.2%). A 58.8% had a single abscess and 54.4% were treated in ICU. A 7.1% of the patients died. When comparing cases treated in the ICU vs. those who did not, there was more hepatomegaly (28.3 vs. 11.0%, p = 0.004), right pleural effusion (48.5 vs. 28.1%, p = 0.010), surgery (42.4 vs. 13.4%, p < 0.001), therapeutic failure (22.2 vs. 7.3%, p = 0.007) and death (12.1 vs. 1.2%, p = 0.005) in patients treated in ICU. CONCLUSION: Enterobacterales are the main cause of LA in our population. Mortality has decreased, but intensive care hospitalization remains high.

Vancomicina contra metronidazol en infección por Clostridioides difficile leve-moderada de manejo ambulatorio / Vancomycin or metronidazole in the outpatient treatment of mild-moderate Clostridioides difficile infection

INTRODUCCIÓN: En la diarrea asociada a Clostridioides dfficile (DACD) leve-moderada se recomienda tratar con vancomicina por sobre metronidazol, a pesar de su difícil acceso y poca evidencia en el medio ambulatorio. OBJETIVO: Comparar la tasa de cura clínica y recurrencia entre vancomicina y metronidazol en adultos chilenos con primer episodio leve-moderado de DACD de manejo ambulatorio. MÉTODOS: Cohorte retrospectiva entre enero 2015 y diciembre 2020 en centros de una red de salud universitaria de pacientes de ≥ 18 años con DACD tratados ambulatoriamente. RESULTADOS: Se obtuvieron 161 pacientes, 59% mujeres, edad promedio de 53 años (entre 18 y 94 años). De ellos, 109 (67,7%) usaron metronidazol y 52 (32,3%) vancomicina. En el análisis multivariado ajustado por edad y comorbilidades se obtuvo un OR 3,00 (IC 95% 1,12-9,59) para cura clínica y 0,27 (IC 95% 0,06-0,88) para recurrencia a ocho semanas, ambos a favor de vancomicina, sin diferencias en recurrencia a 12 meses, necesidad de hospitalización o mortalidad. CONCLUSIÓN: La terapia con vancomicina comparada contra metronidazol en el tratamiento ambulatorio de la infección leve-moderada por C. dfficile se asocia a mayor cura clínica y menor tasa de recurrencia a corto plazo, sin diferencias en desenlaces a largo plazo.

BACKGROUND: Recommended treatment against mild cases of Clostridioides difficile associated diarrhea is vancomycin despite the difficulties of access compared to metronidazole. AIM: To compare the effectiveness of vancomycin and metronidazole in Chilean adults with first mild-moderate episode of Clostridiodes difficile infection (CDI). METHODS: Retrospective cohort of patients with CDI between January 2015 and December 2020 treated in centers of a university health network. The patients were adults treated for C. difficile infection on an outpatient basis. Recurrent and severe cases were excluded. Outcomes included clinical cure and recurrence rate. RESULTS: Data from 161 patients was recovered. Fifty-nine percent were women and average age was 53 (18-94). One hundred and nine patients were treated with metronidazole (67.7%) and 52 (32.3%) used vancomycin. Multivariate analysis adjusted by age and comorbidities showed an Odds Ratio of 3.00 (IC 95% 1.12-9.59) for clinical cure and 0.27 (IC 95% 0.06-0.88) for 8-week recurrence rate, both in favor of vancomycin, without differences in 12-month recurrence rate, hospitalization rate nor mortality. CONCLUSIONS: Vancomycin is associated with better short-term outcomes in the treatment of outpatient mild-moderate first episode C. difficile infection, without differences in long term recurrence or mortality when compared with metronidazole.

Pileflebitis en pediatría: un desafío diagnóstico / Pylephlebitis in pediatrics: A diagnostic challenge

La pileflebitis es definida como la trombosis supurativa de la vena porta como complicación de infecciones abdominales. En pediatría, la etiología más frecuente es la apendicitis, generalmente de diagnóstico tardío, que se presenta como sepsis, con una elevada mortalidad. Para el diagnóstico son necesarios métodos de diagnóstico por imágenes; los más utilizados son la ecografía Doppler y la angiotomografía. El tratamiento se basa en la intervención quirúrgica, la antibioticoterapia y la anticoagulación. Esta última tiene indicación controvertida, pero podría mejorar el pronóstico y disminuir la morbimortalidad. Se presenta un caso clínico de pileflebitis secundaria a sepsis por Escherichia coli con punto de partida en una apendicitis aguda, en un paciente pediátrico que evoluciona a la transformación cavernomatosa de la vena porta. Es de importancia conocer el manejo de esta entidad, ya que, una vez superado el cuadro inicial, requerirá un minucioso seguimiento por la posibilidad de evolucionar a la insuficiencia hepática.

Pylephlebitis is defined as suppurative thrombosis of the portal vein as a complication of abdominal infections. In pediatrics, the most frequent etiology is appendicitis, generally of late diagnosis, presenting as sepsis, with a high mortality rate. Imaging methods are necessary for diagnosis; the most common are the Doppler ultrasound and computed tomography angiography. Treatment is based on surgery, antibiotic therapy, and anticoagulation. The indication for the latter is controversial, but it may improve prognosis and decrease morbidity and mortality. Here we describe a clinical case of pylephlebitis secondary to Escherichia coli sepsis, which started as acute appendicitis in a pediatric patient who progressed to cavernomatous transformation of the portal vein. It is important to know the management of this disease because, once the initial symptoms are overcome, it will require close follow-up due to a potential progression to liver failure.

Characteristics and therapeutic strategies of Pott's puffy tumor / 临床耳鼻咽喉头颈外科杂志

Objective:To explore the characteristics and therapeutic strategies of Pott's puffy tumor（PPT）. Methods:The clinical data of two patients with PPT were retrospectively analyzed and combined with the literature, focusing on the comprehensive analysis of perioperative diagnosis and treatment strategies. Both patients underwent muti-disciplinary treatment, including timely administration of sufficient antibiotics capable of penetrating the blood-brain barrier. Early removal of PPT lesions was performed using a combined internal and external approach under nasal endoscopic guidance. Results:After standardized perioperative management, the symptoms of the two patients were completely relieved, with no recurrence after one=year follow=up. Postoperative complications such as frontal pain, numbness, local depression, or scar hyperplasiawere not present. Conclusion:PPT, being relatively rare and severe, requires careful attention. Key strategies for standardized perioperative management include multi-disciplinary consultation, timely and adequate antibiotic administration, and surgical intervention using a combined intranasal and extranasal endoscopic approach for lesion removal.

Analysis of gene characteristics and core genome characteristics of carbapenem-resistant Enterobacter cloacae in rural residents of Weifang City, Shandong Province / 中华预防医学杂志

Objective: To investigate the drug-resistant gene characteristics and core genome characteristics of carbapenem-resistant Enterobacter cloacae (CR-ECL) in rural residents of Weifang City, Shandong Province. Methods: Fecal samples were collected from rural community residents in Weifang City, Shandong Province in 2017. Drug-resistant strains were screened using a carbapenem-resistant enterobacter chromogenic medium. CR-ECL positive strains were acquired via Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry(MALDI-TOFMS) analysis. The antibiotic resistance phenotype of CR-ECL was determined using a microbroth dilution assay. Whole genome sequencing (WGS) and analysis were conducted, along with an examination of the immediate vicinity of the blaNDM gene and phylogenetic analysis of the strains. Results: A total of 628 fecal samples were collected and tested, of which 6 were CR-ECL positive (detection rate 0.96%), all exhibiting multiple drug resistance (MDR) phenotypes. Six CR-ECL strains had four MLST genotypes (ST), all of which carried multiple drug resistance genes (blaNDM-1, blaNDM-5, etc.) and virulence genes (acrA, acrB, entB, fepC, etc.). There were mobile genetic elements ISAba125, TN3-IS3000, TN3 and IS5 in the genetic environment surrounding the blaNDM gene. The phylogenetic tree showed that the multi-locus sequence typing of the core genome (cgMLST) was consistent with the single nucleotide polymorphism (SNPs) results. The cgMLST results showed that the allele differences between strains 2BC0101B and 2BC0251B, 2BG0561B and 2BI0221B were 2 and 1, respectively. The SNPs results showed that the above two pairs of bacteria also clustered together. It was found that the strains of chicken fecal samples in the National Center for Biotechnology Information (NCBI) database were located in the center of the evolutionary tree, and the local sequences could be traced back to American human sequences. Conclusion: Multidrug-resistant CR-ECL is detected in rural community residents in Weifang City, Shandong Province.

The clinical application of targeted next-generation sequencing and metagenomics next-generation sequencing in pathogenic microorganism detection / 中华预防医学杂志

Infectious diseases seriously threaten human health. The early detection of the causative organism and antibiotic resistance genes of infection remains a major clinical challenge. Next-generation sequencing has been widely used in diagnosing infectious diseases. Cheaper and faster targeted next-generation sequencing technology is progressively being used in clinical practice. However, the awareness among clinicians about the clinical utility of this technology is limited. The article presents the theoretical background, advantages and disadvantages, clinical applications of targeted next-generation sequencing, and its contrasts with metagenomics next-generation sequencing. It provides a reference for clinicians to select laboratory methods for identifying pathogens in clinical practice.

Analysis of gene characteristics and core genome characteristics of carbapenem-resistant Enterobacter cloacae in rural residents of Weifang City, Shandong Province / 中华预防医学杂志

Objective: To investigate the drug-resistant gene characteristics and core genome characteristics of carbapenem-resistant Enterobacter cloacae (CR-ECL) in rural residents of Weifang City, Shandong Province. Methods: Fecal samples were collected from rural community residents in Weifang City, Shandong Province in 2017. Drug-resistant strains were screened using a carbapenem-resistant enterobacter chromogenic medium. CR-ECL positive strains were acquired via Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry(MALDI-TOFMS) analysis. The antibiotic resistance phenotype of CR-ECL was determined using a microbroth dilution assay. Whole genome sequencing (WGS) and analysis were conducted, along with an examination of the immediate vicinity of the blaNDM gene and phylogenetic analysis of the strains. Results: A total of 628 fecal samples were collected and tested, of which 6 were CR-ECL positive (detection rate 0.96%), all exhibiting multiple drug resistance (MDR) phenotypes. Six CR-ECL strains had four MLST genotypes (ST), all of which carried multiple drug resistance genes (blaNDM-1, blaNDM-5, etc.) and virulence genes (acrA, acrB, entB, fepC, etc.). There were mobile genetic elements ISAba125, TN3-IS3000, TN3 and IS5 in the genetic environment surrounding the blaNDM gene. The phylogenetic tree showed that the multi-locus sequence typing of the core genome (cgMLST) was consistent with the single nucleotide polymorphism (SNPs) results. The cgMLST results showed that the allele differences between strains 2BC0101B and 2BC0251B, 2BG0561B and 2BI0221B were 2 and 1, respectively. The SNPs results showed that the above two pairs of bacteria also clustered together. It was found that the strains of chicken fecal samples in the National Center for Biotechnology Information (NCBI) database were located in the center of the evolutionary tree, and the local sequences could be traced back to American human sequences. Conclusion: Multidrug-resistant CR-ECL is detected in rural community residents in Weifang City, Shandong Province.

The clinical application of targeted next-generation sequencing and metagenomics next-generation sequencing in pathogenic microorganism detection / 中华预防医学杂志

Infectious diseases seriously threaten human health. The early detection of the causative organism and antibiotic resistance genes of infection remains a major clinical challenge. Next-generation sequencing has been widely used in diagnosing infectious diseases. Cheaper and faster targeted next-generation sequencing technology is progressively being used in clinical practice. However, the awareness among clinicians about the clinical utility of this technology is limited. The article presents the theoretical background, advantages and disadvantages, clinical applications of targeted next-generation sequencing, and its contrasts with metagenomics next-generation sequencing. It provides a reference for clinicians to select laboratory methods for identifying pathogens in clinical practice.

Diverticulitis aguda yeyunal: serie de casos / Acute jejunal diverticulitis: a case series

Diverticula at the jejuno-ileum are rare. They correspond mostly to pseudo diverticula and usually go unnoticed. Among symptomatic patients the clinical presentation is heterogeneous. We present 3 cases of it most frequent complication: acute jejunal diverticulitis

La presencia de divertículos a nivel de yeyuno-íleon es infrecuente. Ellos corresponden mayormente a pseudo divertículos y suelen pasar desapercibidos. Entre los casos sintomáticos, la presentación clínica es heterogénea. Presentamos 3 casos de diverticulitis aguda yeyunal que es la complicación más frecuente.

Absceso de Brodie en la clavícula: una forma poco frecuente de presentación / Brodie abscess in the clavicle: an uncommon presentation

La osteomielitis (OM) se define como la inflamación ósea de origen infeccioso. La forma aguda es frecuente en la edad pediátrica. El absceso de Brodie es un tipo de osteomielitis subaguda, históricamente con baja incidencia, pero que actualmente se presenta un aumento de la misma. De poca repercusión clínica, con pruebas de laboratorio inespecíficas y estudios radiológicos de difícil interpretación, es crucial la sospecha diagnóstica. Se asemeja a procesos neoplásicos, benignos o malignos. Recae en la experiencia del profesional realizar el diagnóstico adecuado. El tratamiento consiste en antibioticoterapia, tanto parenteral como por vía oral, y eventualmente drenaje quirúrgico. Presentamos una paciente sana que consultó por una tumoración en topografía de clavícula izquierda de 3 meses de evolución. Se realizó diagnóstico de absceso de Brodie, inició tratamiento y se obtuvo una buena respuesta. Resulta imprescindible tener un alto índice de sospecha de esta entidad para no someter al paciente a estudios, pruebas invasivas o tratamientos erróneos, y evitar secuelas a futuro.

Osteomyelitis is defined as an inflammation of the bone caused by infection. Acute osteomyelitis is common in pediatrics. A Brodie abscess is a type of subacute osteomyelitis, with a historically low incidence; however, its incidence is currently increasing. Given its little clinical impact, with non-specific laboratory tests and radiological studies of difficult interpretation, diagnostic suspicion is crucial. It resembles neoplasms, either benign or malignant. An adequate diagnosis falls on the health care provider's experience. Treatment consists of antibiotics, both parenteral and oral, with potential surgical drainage. Here we describe the case of a healthy female patient with a tumor found in the topography of the left clavicle 3 months before. She was diagnosed with Brodie abscess; treatment was started with a good response. A high index of suspicion of Brodie abscess is critical to avoid invasive tests and studies or inadequate treatments, and to prevent future sequelae.

Antimicrobial Efficacy of the Use of Mouthwash with Cetylpiridinium Chloride for Aerosol Producing Procedures. A Systematic Review / Eficacia antimicrobiana del uso del enjuague bucal con cloruro de cetilpiridinio en procedimientos que generan aerosoles. Revisión sistemática

Abstract The present research aims to determine the antimicrobial efficacy of the mouthwashes based on cetylpyridinium chloride (CPC), before aerosol producing dental procedures. A data search was performed during August 2021 in five databases MEDLINE (PubMed), SCOPUS, SCIELO, Cochrane Central Register of Controlled Trials (CENTRAL) and Google Scholar. Randomized clinical trials (RCTs) were included based on the PICO question, comparing the efficacy of the mouthwashes based on cetylpyridinium chloride (CPC), versus other mouthwashes and water, before aerosol producing dental procedures, papers in English, Spanish and Portuguese were included without time limits. The risk of the included studies was evaluated with the tool RoB 2.0. Number of registration PROSPERO N° CRD42021275982. 120 papers were obtained in the preliminary search, discarding those that didn't comply with the selection criteria, leaving only 3 studies. These papers reported the use of cetylpyridinium chloride (CPC) was effective for the reduction of bacteria during the ultrasonic prophylactic procedure. The use of CPC mouthwashes previous to the dental treatment with ultrasonic prophylaxis showed only antibacterial capacity.

Resumen El presente trabajo de investigación tiene como objetivo determinar la eficacia antimicrobiana de los colutorios a base de cloruro de Cetilpiridinio (CPC), previo a tratamientos dentales que generen aerosol. Se realizó una búsqueda bibliográfica hasta agosto del 2021 en cinco bases de datos: MEDLINE (vía PubMed), SCOPUS, SCIELO, Cochrane Central Register of Controlled Trials (CENTRAL) y Google Scholar. Se incluyeron ensayos clínicos aleatorizados (ECAs), basándose en la pregunta PICOS, que compare la eficacia del colutorio a base de cloruro de Cetilpiridinio (CPC) con otro colutorio, placebo o agua, previo a un tratamiento dental que genere aerosol, en los idiomas español, inglés o portugués y sin límite de tiempo. El riesgo de los estudios incluidos se evaluó con la herramienta RoB 2.0. Número de registro PROSPERO N° CRD42021275982. Se obtuvo un total de 120 artículos en la búsqueda preliminar, descartando aquellos que no cumplían con los criterios de selección, quedando sólo 3articulos. Estos artículos informaron que el uso de CPC es efectivo para la reducción de bacterias durante el procedimiento de profilaxis con ultrasonido. El uso de los enjuagues bucales a base de CPC previo al tratamiento dental de profilaxis con ultrasonido sólo tiene eficacia antibacteriana.

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.

Vaginosis citolítica: actualización diagnóstica y terapéutica / Cytolytic vaginosis: diagnostic and therapeutic update

El objetivo es conocer el abordaje diagnóstico y terapéutico de la vaginosis citolítica. Para ello se hizo una búsqueda sistemática de la literatura médica mediante las bases de datos: PubMed, Central, etc. Se limitó a ensayos clínicos aleatorizados, metaanálisis y revisiones bibliográficas, con disponibilidad del texto completo para evaluarlos en su totalidad e incluirlos en la revisión; publicados entre 1980 y 2021. Se incluyeron 27 publicaciones. La vaginosis citolítica es un trastorno infradiagnosticado. En mujeres con síntomas y signos de candidiasis vulvovaginal, que no responden a la terapia, se debe considerar la probabilidad de estar en presencia de una vaginosis citolítica. El tratamiento obliga a elevar el pH vaginal a valores básicos y a disminuir el número excesivo de Lactobacillus, resultando de utilidad las duchas vaginales con bicarbonato de sodio y/o un tratamiento con antibióticos derivados de la penicilina junto a un inhibidor de ß-lactamasas o doxiciclina en las pacientes alérgicas a la penicilina. Finalmente, se concluye que la vaginosis citolítica es una afección común, frecuentemente se diagnostica de forma errónea porque se confunde con la candidiasis vulvovaginal; se caracteriza por producir un cuadro clínico similar. El tratamiento se enfoca en disminuir el número de Lactobacillus y la elevación del pH vaginal.

The objective is to know the diagnostic and therapeutic approach of cytolytic vaginosis. A systematic search of the medical literature was carried out using the following databases: Medline via PubMed, Central, and Cochrane Database of Systematic Reviews, among others. The search was limited to randomized clinical trials, meta-analyses, and literature reviews that had the full text available for full evaluation and inclusion in the review; published between 1980 and 2021. Twenty-seven publications were included. Cytolytic vaginosis is a frequently underdiagnosed disorder, which mimics Candida vaginitis. In women with symptoms and signs of vulvovaginal candidiasis who do not respond to antifungal therapy, the possibility of cytolytic vaginosis should be considered. The treatment of this condition requires raising the vaginal pH to basic values and reducing the excessive number of Lactobacillus, resulting in useful vaginal douches with sodium bicarbonate and/or treatment with antibiotics derived from penicillin together with a ß-lactamases inhibitor or doxycycline in patients allergic to penicillin. Finally, we conclude that cytolytic vaginosis is a common condition, frequently misdiagnosed because it is confused with vulvovaginal candidiasis, since it is characterized by producing a similar clinical picture. Treatment focuses on reducing the number of Lactobacillus and raising vaginal pH.

Mucormicosis de cabeza y cuello: actualización en el diagnóstico y manejo médico-quirúrgico. Una revisión narrativa / Mucormycosis of the head and neck: update on diagnosis and medical-surgical management. A narrative review

La mucormicosis, es una patología de baja preva- lencia, rápidamente progresiva y de alta mortalidad que engloba un amplio espectro de infecciones del tipo opor- tunistas, causada por hongos de la familia Mucoraceae, Lichtheimiaceae, Thamnidiaceae, Cunninghamellaceae, Syncephalastraceae y Radiomycetaeae. Actualmente es la tercera causa de infección fúngica invasiva, posterior a la candidiasis y aspergilosos, siendo su presentación clínica más frecuente la rinocerebral de origen paranasal, cuyo síntoma característico es la rinosinusitis aguda bacteriana con proyección a los dientes antrales, de rápido avance y fatalidad. En esta revisión se emplearon resultados extraídos ma- nualmente de artículos indexados en las bases de datos MED- LINE y EBSCO a raíz de la búsqueda de los términos mu- cormycosis, oral surgery y patient care management con el objetivo de entregar una visión actualizada de la literatura, respecto al diagnóstico y tratamiento de la mucormicosis de cabeza y cuello (AU)

Mucormycosis is a low-prevalence, rapidly progres- sive and high-mortality pathology that encompasses a wide spectrum of opportunistic infections caused by fungi of the Mucoraceae, Lichtheimiaceae, Thamnidiaceae, Cunningha- mellaceae, Syncephalastraceae, and Radiomycetaeae. It is currently the third cause of invasive fungal infection, after candidiasis and aspergillosis, with its most frequent clinical presentation being rhinocerebral of paranasal origin, whose characteristic symptom is acute bacterial rhinosinusitis with projection to the antral teeth, with rapid progression and fatality. In this review, manually extracted results from articles indexed in the MEDLINE and EBSCO databases were used following the search for the terms mucormycosis, oral sur- gery and patient care management with the aim of providing an updated view of the literature regarding the diagnosis and treatment of mucormycosis of the head and neck

Neumonía por Pneumocystis jirovecii asociada a hemorragia alveolar difusa en un paciente con trasplante renal / Pneumocystis jirovecii pneumonia associated with diffuse alveolar hemorrhage in a renal transplant patient. Case report

La neumonía por Pneumocystis jirovecii es una enfermedad fúngica oportunista descrita principalmente en pacientes con VIH, sin embargo, tras la introducción de la TARV, ha incrementado su incidencia en pacientes con inmunosupresión no asociada a VIH, como neoplasias hematológicas y trasplantes de órganos sólidos. Presentamos el caso de un varón de 17 años, receptor de un trasplante renal, con inmunosupresión prolongada con corticoesteroides, con cuadro clínico de tos, disnea y fiebre. La TC mostró micronódulos pulmonares centrolobulillares y vidrio esmerilado. El LBA fue compatible con hemorragia alveolar difusa (HAD), con RPC positiva para P. jirovecii. Se descartaron otras infecciones y enfermedades autoinmunes. Recibió tratamiento con cotrimoxazol con buena evolución clínica y mejoría radiológica. Si bien las causas más frecuentes de HAD son etiologías autoinmunes como enfermedades reumatológicas o vasculitis, es prioritario descartar causas infecciosas, incluyendo P. jirovecii, ya que el tratamiento dirigido puede tener un impacto significativo en la mortalidad en este grupo de pacientes.

Pneumocystis jirovecii pneumonia is an opportunistic fungal infection, described mainly in HIV patients, however, after the introduction of ART, its presentation has increased in patients with non-HIV immunosuppression, such as hematological cancers, solid or hematopoietic stem cell transplantation. We report the case of a 17-year-old male, kidney transplant patient, with prolonged immunosuppression with corticoesteroids, with history of cough, dyspnea, and fever. Chest CT evidences centrilobular pulmonary micronodules with ground glass. BAL was performed compatible with diffuse alveolar hemorrhage, with positive PCR for P. jirovecii. Other infections and autoimmune disease were ruled out. He received treatment with cotrimoxazole with clinical improvement of the patient, and follow up chest CT at the end of treatment showed decrease of pulmonary infiltrates. Although the most frequent causes of DAH are autoimmune etiologies such as rheumatic diseases or vasculitis, it is a priority to rule out infectious causes, including P. jirovecii, since targeted treatment could have a significant impact on mortality outcomes in this group of patients.

Ceftazidima/avibactam frente a otros antimicrobianos para el tratamiento de bacteriemias por Enterobacterales productores de carbapenemasa KPC: datos de la vida real en un hospital universitario de Argentina / Ceftazidime/avibactam versus other antibiotics for the treatment of KPC carbapenemase-producing Enterobacterales bacteremia: real-life data from a university hospital in Argentina

INTRODUCCIÓN: Las bacteriemias por Enterobacterales productores de carbapenemasa KPC (EPC-KPC) presentan una mortalidad elevada y opciones terapéuticas limitadas. OBJETIVOS: Describir y comparar la evolución de los pacientes con bacteriemia por EPC-KPC tratados con ceftazidima/avibactam (CA) frente a otros antimicrobianos (OA). PACIENTES Y MÉTODOS: Estudio prospectivo y retrospectivo de casos y controles. Se incluyeron pacientes adultos con bacteriemia por EPC-KPC, con una proporción entre casos tratados con CA y controles tratados con OA. de 1:2. Se analizaron variables clínicas, epidemiológicas y de evolución. RESULTADOS: Se incluyeron 48 pacientes (16 CA y 32 OA). Los casos se encontraban más frecuentemente neutropénicos (50 vs.16%, p = 0,012); asimismo, presentaron medianas de score de APACHE II más altas y de score de Pitt más bajas. El 65% de la cohorte total presentó un foco clínico y Klebsiellapneumoniae fue el microorganismo más frecuentemente aislado. Los casos recibieron una mayor proporción de tratamiento antimicrobiano empírico adecuado (81 vs. 53%, p = 0,05). La antibioterapia dirigida en casos y controles fue combinada en 38 y 91%, p = 0,009. Los casos presentaron menor mortalidad al día 7 y al día 30 relacionada a infección (0 vs. 22%, p = 0,04 y 0 vs. 34%, p = 0,008). Solo los controles desarrollaron shock, ingresaron a la unidad de cuidados intensivos y presentaron bacteriemia de brecha. CONCLUSIÓN: CA mostró beneficio clínico frente a OA para el tratamiento de pacientes con bacteriemia por EPC-KPC.

BACKGROUND: KPC-producing Enterobacterales bacteremia (KPCCPE) is associated with a high mortality rate and limited therapeutic options. AIM: To describe and compare the outcome of patients with KPC-CPE bacteremia treated with ceftazidime/avibactam (CA) versus other antibiotics (OA). METHODS: Prospective and retrospective cases and control study performed in adult patients with KPC-CPE bacteremia, with a 1:2 ratio between cases treated with CA. and controls treated with OA. Clinical, epidemiological, and outcome variables were analyzed. RESULTS: Forty-eight patients (16 CA and 32 OA) were included. Cases were more frequently neutropenic (50 vs. 16%, p = 0.012), presented higher median APACHE II score and lower Pitt score. Of the total cohort, 65% had a clinical source, and Klebsiella pneumoniae was the most frequently isolated microorganism. Cases received more adequate empirical antibiotic treatment (81 vs. 53%, p = 0.05). Targeted antibiotic therapy in cases and controls was combined in 38 and 91%, p = 0.009. Cases had a lower 7-day mortality and 30-day infection-related mortality (0 vs. 22%, p = 0.04 and 0 vs. 34%, p = 0.008). Only controls developed shock, were admitted to the intensive care unit, and had breakthrough bacteremia. CONCLUSION: CA. showed clinical benefit over OA in the treatment of patients with EPC-KPC bacteremia.