Emerging infection: streptococcal toxic shock-like syndrome caused by group B Streptococcus (GBS), Streptococcus agalactiae.

Streptococcus agalactiae or Group B Streptococcus (GBS) infections are commonly associated with infections in neonates and pregnant women. However, there has been a rising incidence in nonpregnant adults. The risk of GBS infection in nonpregnant adults is increased for patients of advanced age and those with underlying medical conditions such as diabetes mellitus and cancer. We present a 77-year-old female with type-2 diabetes mellitus, hypertension, and bilateral foot ulcers that presented in probable septic shock with necrotic foot ulcers and necrotizing fasciitis and underwent bilateral lower limb amputations. The patient fulfilled the Streptococcal Toxic Shock Syndrome (STSS) criteria as defined by The Working Group on Severe Streptococcal Infections. These criteria were created for group A Streptococcus (Streptococcus pyogenes). Our patient fulfilled the Working Group's criteria, except that the blood culture was positive for group B Streptococcus (Streptococcus agalactiae). Numerous studies demonstrate the importance of early detection and antibiotic treatment for GBS infections in general and early surgical management for necrotizing soft tissue infections (NSTIs) such as necrotizing fasciitis.

Mixed Shock Complicating Cardiogenic Shock: Frequency, Predictors, and Clinical Outcomes.

BACKGROUND: Patients presenting with cardiogenic shock (CS) are at risk of developing mixed shock (MS), characterized by distributive-inflammatory phenotype. However, no objective definition exists for this clinical entity. METHODS: We assessed the frequency, predictors, and prognostic relevance of MS complicating CS, based on a newly proposed objective definition. MS complicating CS was defined as an objective shock state secondary to both an ongoing cardiogenic cause and a distributive-inflammatory phenotype arising at least 12 hours after the initial CS diagnosis, as substantiated by predefined longitudinal changes in hemodynamics, clinical, and laboratory parameters. RESULTS: Among 213 consecutive patients admitted at 2 cardiac intensive care units with CS, 13 with inflammatory-distributive features at initial presentation were excluded, leading to a cohort of 200 patients hospitalized with pure CS (67±13 years, 96% Society of Cardiovascular Angiography and Interventions CS stage class C or higher). MS complicating CS occurred in 24.5% after 120 (29-216) hours from CS diagnosis. Lower systolic arterial pressure (P=0.043), hepatic injury (P=0.049), and suspected/definite infection (P=0.013) at CS diagnosis were independent predictors of MS development. In-hospital mortality (53.1% versus 27.8%; P=0.002) and hospital stay (21 [13-48] versus 17 [9-27] days; P=0.018) were higher in the MS cohort. At logistic multivariable analysis, MS diagnosis (odds ratio [OR], 3.00 [95% CI, 1.39-6.63]; Padj=0.006), age (OR, 1.06 [95% CI, 1.03-1.10] years; Padj<0.001), admission systolic arterial pressure <100 mm Hg (OR, 2.41 [95% CI, 1.19-4.98]; Padj=0.016), and admission serum creatinine (OR, 1.61 [95% CI, 1.19-2.26]; Padj=0.003) conferred higher odds of in-hospital death, while early temporary mechanical circulatory support was associated with lower in-hospital death (OR, 0.36 [95% CI, 0.17-0.75]; Padj=0.008). CONCLUSIONS: MS complicating CS, objectively defined leveraging on longitudinal changes in distributive and inflammatory features, occurs in one-fourth of patients with CS, is predicted by markers of CS severity and inflammation at CS diagnosis, and portends higher hospital mortality.

Emerging infection: streptococcal toxic shock-like syndrome caused by group B Streptococcus (GBS), Streptococcus agalactiae

ABSTRACT Streptococcus agalactiae or Group B Streptococcus (GBS) infections are commonly associated with infections in neonates and pregnant women. However, there has been a rising incidence in nonpregnant adults. The risk of GBS infection in nonpregnant adults is increased for patients of advanced age and those with underlying medical conditions such as diabetes mellitus and cancer. We present a 77-year-old female with type-2 diabetes mellitus, hypertension, and bilateral foot ulcers that presented in probable septic shock with necrotic foot ulcers and necrotizing fasciitis and underwent bilateral lower limb amputations. The patient fulfilled the Streptococcal Toxic Shock Syndrome (STSS) criteria as defined by The Working Group on Severe Streptococcal Infections. These criteria were created for group A Streptococcus (Streptococcus pyogenes). Our patient fulfilled the Working Group's criteria, except that the blood culture was positive for group B Streptococcus (Streptococcus agalactiae). Numerous studies demonstrate the importance of early detection and antibiotic treatment for GBS infections in general and early surgical management for necrotizing soft tissue infections (NSTIs) such as necrotizing fasciitis.

Asociación entre índice de masa corporal y mortalidad en pacientes críticos con choque séptico / Association between body mass index and mortality in critical ill patients with septic shock

INTRODUCCIÓN. La paradoja de la obesidad propone que, en determinadas enfermedades, los enfermos con obesidad tienen menor mortalidad. OBJETIVO. Asociar el índice de masa corporal con la mortalidad a 30 días en adultos con choque séptico. MATERIALES Y MÉTODOS. Estudio observacional, analítico, retrospectivo, multicéntrico. Se analizaron 673 pacientes con choque séptico, ingresados en terapia intensiva de dos hospitales de la ciudad de la ciudad de Quito ­ Ecuador, durante enero 2017 - diciembre 2019. Criterios de inclusión: Mayores a 18 años, choque séptico, registro de peso, talla y condición vital al día 30. Criterios de exclusión: Orden de no reanimación, embarazadas, protocolo de donación de órganos, cuidados paliativos. Las variables se recolectaron a partir de las historias clínicas digitales y físicas de los centros participantes. Las estimaciones de riesgo calculadas se presentaron como OR (Odds Ratio) en el análisis bivariado y OR Adj (OR ajustado) para el análisis multivariado. Un valor de p <0.05 se consideró estadísticamente significativo. Todos los análisis estadísticos se realizaron usando el software estadístico R® (Versión 4.1.2). RESULTADOS. La edad promedio fue de 65 años, índice de masa corporal promedio 25,9 Kg/m2 (+4,9 Kg/m2). El 54,3% tuvo índice de masa corporal > 25 Kg/m2. La mortalidad general fue 49.2%. Sujetos con sobrepeso y obesidad tuvieron menor mortalidad, OR: 0,48 (IC 95%: 0.34, 0.68; p <0.0001) y OR 0.45 (IC 95 %: 0.28, 0.70; p =0.001) respectivamente, con similar tendencia en el análisis multivariado. Los sujetos con peso bajo tuvieron la mayor mortalidad (OR: 2.12. IC 95%: 0.91 - 5.54. p: 0.097). DISCUSIÓN. Los resultados obtenidos apoyan la teoría de paradoja de obesidad, sin embargo, no se realizó evaluación según los niveles de obesidad. CONCLUSIÓN. La mortalidad en choque séptico es menor en sujetos con sobrepeso y obesidad comparada con sujetos con peso normal o bajo peso.

The obesity paradox proposes that, in certain diseases, patients with obesity have lower mortality. OBJECTIVE. To associate body mass index with 30-day mortality in adults with septic shock. MATERIALS AND METHODS. Observational, analytical, retrospective, multicenter, retrospective study. We analyzed 673 patients with septic shock, admitted to intensive care in two hospitals in the city of Quito - Ecuador, during January 2017 - December 2019. Inclusion criteria: older than 18 years, septic shock, weight, height and vital condition at day 30. Exclusion criteria: Do not resuscitate order, pregnant women, organ donation protocol, palliative care. Variables were collected from the digital and physical medical records of the participating centers. Calculated risk estimates were presented as OR (Odds Ratio) in bivariate analysis and OR Adj (adjusted OR) for multivariate analysis. A p value <0.05 was considered statistically significant. All statistical analyses were performed using R® statistical software (Version 4.1.2). RESULTS. The mean age was 65 years, mean body mass index 25.9 kg/m2 (+4.9 kg/m2). Body mass index > 25 kg/m2 was 54.3%. Overall mortality was 49.2%. Overweight and obese subjects had lower mortality, OR: 0.48 (95% CI: 0.34, 0.68; p<0.0001) and OR 0.45 (95 % CI: 0.28, 0.70; p=0.001) respectively, with similar trend in multivariate analysis. Underweight subjects had the highest mortality (OR: 2.12. 95% CI: 0.91 - 5.54. p: 0.097). DISCUSSION. The results obtained support the obesity paradox theory, however, assessment according to obesity levels was not performed. CONCLUSIONS. Mortality in septic shock is lower in overweight and obese subjects compared to normal weight or underweight subjects.

Proceso de enfermería en paciente con choque séptico desde la perspectiva del déficit de autocuidado (caso clínico) / Nursing process in a patient with septic shock from the perspective of self-care deficit

El choque séptico es un estado de hipoperfusión tisular definido como subcategoría de la sepsis en la que las alteraciones circulatorias y del metabolismo celular pueden aumentar considerablemente la mortalidad. A nivel mundial, el choque séptico ocupa el segundo lugar como causa de muerte no coronaria en la Unidad de Cuidados Intensivos (UCI), con una incidencia anual del 10%, y con una mortalidad hospitalaria de 18 a 35%. Objetivo: Describir el abordaje del Proceso de Atención de Enfermería en el paciente con choque séptico y desde la perspectiva del déficit de autocuidado. Metodología: El caso clínico se fundamentó en las etapas del Proceso de Atención de Enfermería (PAE), en la Teoría Enfermera del Déficit de Autocuidado (TEDA) de Dorothea Orem y en herramientas taxonómicas para el abordaje individualizado del plan de cuidados. Resultados: Paciente de 68 años en el servicio de Cuidados Intensivos Adultos, cursa la primera hora del posoperatorio por nefrectomía izquierda secundaria a absceso perirenal, que condiciona a choque séptico. Se abordó el PAE con apoyo del TEDA siendo prioritaria la etiqueta diagnóstica disminución del gasto cardiaco. Conclusiones: La aplicación de las teorías y modelos de enfermería proporcionan un marco de referencia para otorgar cuidados de calidad en los diferentes ámbitos de desempeño, incluyendo unidades de atención de cuidados intensivos. Resulta indispensable usar la metodología del PAE que permite dar evidencia de la profesionalización del cuidado, al usar un lenguaje técnico, con el apoyo de la Teoría de Orem y con las herramientas taxonómicas[AU]

Septic shock is a state of tissue hypoperfusion defined as a subcategory of sepsis in which circulatory and cellular metabolism alterations can considerably increase mortality. Worldwide, septic shock ranks second as a cause of non-coronary death in the Intensive Care Unit (ICU), with an annual incidence of 10%, and a hospital mortality of 18 to 35%. Objective: To describe the approach to the Nursing Care Process in patients with septic shock and from the perspective of self-care deficit. Methodology: The clinical case was based on the stages of the Nursing Care Process (PAE), on the Nursing Theory of Self-Care Deficit (TEDA) by Dorothea Orem and on taxonomic tools for the individualized approach to the care plan. Results: A 68-year-old patient, in the Adult Intensive Care service, undergoes the first postoperative hour due to left nephrectomy secondary to perirenal abscess, which conditions septic shock. The PAE was approached with the support of the TEDA, with a priority being the dignostic label reduction of cardiac output. Conclusions: The application of nursing theories and models provide a frame of reference to provide quality care in different areas of performance, including intensive care units. It is essential to use the PAE methodology that allows to give evidence of the professionalization of care, by using technical language, with the support of Orem's Theory and with taxonomic tools[AU]

O choque séptico é um estado de hipoperfusão tecidual definida como uma subcategoria da sepse em que alterações circulatórias e do metabolismo celular podem aumentar consideravelmente a mortalidade. Mundialmente, o choque séptico ocupa o segundo lugar como causa de morte não coronariana em Unidade de Terapia Intensiva (UTI), com incidência anual de 10% e mortalidade hospitalar de 18 a 35%. Objetivo: Descrever a abordagem do Processo de Cuidado de Enfermagem ao paciente com choque séptico na perspectiva do déficit de autocuidado. Metodologia: O caso clínico baseou-se nas etapas do Processo de Cuidar em Enfermagem (PAE), na Teoria de Enfermagem do Déficit de Autocuidado (TEDA) de Dorothea Orem e em ferramentas taxonômicas para a abordagem individualizada do plano de cuidados. Resultados: Paciente de 68 anos, internada em Unidade de Terapia Intensiva Adulto, com primeira hora de pós-operatório por nefrectomia esquerda secundária a abscesso perirrenal, que acarreta choque séptico. O PAE foi abordado com o apoio do TEDA, tendo como prioridade o rótulo digno de redução do débito cardíaco. Conclusões: A aplicação de teorias e modelos de enfermagem fornecem um quadro de referência para fornecer cuidados de qualidade em diferentes áreas de atuação, incluindo unidades de terapia intensiva. É imprescindível utilizar a metodologia PAE que permita evidenciar a profissionalização do cuidado, por meio de linguagem técnica, com o apoio da Teoria de Orem e com ferramentas taxonómicas[AU]

COVID-19, shock séptico refractario y terapia extracorpórea de purificación sanguínea con OXIRIS® / Management of refractory septic shock with blood purification therapy using a special filter: report of one case

Sepsis is one of the leading causes of death in critically ill patients with COVID-19 and blood purification therapies have a role to immunomodulate the excessive inflammatory response and improve clinical results. One of the devices designed for these therapies is the oXiris® filter, allowing to perform renal replacement therapy combined with selective adsorption of endotoxins and cytokines. We report a 55-year-old male with COVID who developed a septic shock secondary to a sepsis caused by Pseudomona aeruginosa, refractory to the usual management. A veno-venous continuous hemofiltration was started using the oXiris® filter for 48 hours. Subsequently, there was an improvement in clinical perfusion parameters and a reduction in inflammatory markers. The patient was discharged from the intensive care one month later.

Early neonatal sepsis: prevalence, complications and outcomes in newborns with 35 weeks of gestational age or more / Sepse neonatal precoce: prevalência, complicações e desfechos em recém-nascidos com 35 semanas ou mais de idade gestacional

ABSTRACT Objective: To analyze the incidence, complications, and hospital discharge status in newborns with ≥35 weeks of gestational age with early neonatal sepsis. Methods: This is a cross-sectional, retrospective study. Cases of early-onset sepsis registered from January 2016 to December 2019 in neonates with gestational age of 35 weeks or more were reviewed in a level III neonatal unit. The diagnoses were performed based on the criteria by the Brazilian Health Regulatory Agency (Anvisa), and the episodes were classified according to microbiological classification and site of infection. The following complications were evaluated: shock, coagulation disorders, and sequelae of the central nervous system. The conditions at hospital discharge were also assessed. The collected data were analyzed with the descriptive analysis. Results: In the period, early neonatal sepsis occurred in 46 newborns, corresponding to 1.8% of all newborns admitted to the neonatal unit, with a prevalence of 4/1,000 live births. Culture confirmed sepsis ocurred in three patients (0.3/1,000 live births), with the following agents: S. pneumoniae, S. epidermidis and S. agalactiae. As to site of infection, there were 35 cases of primary bloodstream infection, seven cases of pneumonia and four cases of meningitis. Most patients (78.3%) had at least one risk factor for sepsis, and all were symptomatic at admission. There were no deaths. Complications occurred in 28.2% of the cases, especially shock (10 cases - 21.7%). Conclusions: The prevalence of proven early neonatal sepsis was low. Despite the common occurrence of complications, there were no deaths.

RESUMO Objetivo: Analisar a prevalência, as complicações e as condições de alta dos recém-nascidos ≥35 semanas com diagnóstico de sepse neonatal precoce. Métodos: Estudo transversal, com coleta retrospectiva de dados. Incluíram-se todos recém-nascidos com 35 semanas ou mais de idade gestacional, com diagnóstico de sepse precoce em um período de quatro anos (janeiro/2016 a dezembro/2019) em uma unidade neonatal nível III. Os diagnósticos realizaram-se segundo os critérios da Agência Nacional de Vigilância Sanitária e os episódios classificados segundo a confirmação microbiológica e o sítio de infecção. As complicações avaliadas foram: choque, distúrbio de coagulação e sequelas do sistema nervoso central. Também se avaliaram as condições de alta. Os dados coletados foram analisados utilizando estatística descritiva. Resultados: No período, 46 recém-nascidos apresentaram sepse precoce, correspondendo a 1,8% das internações e a uma prevalência de 4/1.000 nascidos vivos. Em três pacientes a sepse foi confirmada por culturas (0,3/1.000 nascidos vivos), respectivamente por S. pneumoniae, S. epidermidis e S. agalactiae. Quanto ao sítio de infecção, foram 35 casos de infecção primária da corrente sanguínea, 7 casos de pneumonia e 4 de meningite. A maior parte dos pacientes (78,3%) possuía pelo menos um fator de risco para sepse, e todos apresentaram-se sintomáticos. Não houve óbito. Complicações ocorreram em 28,2% dos casos, especialmente choque (10 casos - 21,7%). Conclusões: A prevalência de sepse neonatal precoce comprovada foi baixa. Apesar da ocorrência comum de complicações, não houve óbitos.

Epidemiology and treatment of sepsis at a public pediatric emergency department

ABSTRACT Objective To describe the clinical characteristics and treatment of children with sepsis, severe sepsis, and septic shock at a pediatric emergency department of a public hospital. Methods A retrospective, observational study. The medical records of patients included in the hospital Pediatric Sepsis Protocol and patients with discharge ICD-10 A41.9 (sepsis, unspecified), R57 (shock) and A39 (meningococcal meningitis) were evaluated. Results A total of 399 patients were included. The prevalence of sepsis, severe sepsis, and septic shock at the emergency room were 0.41%, 0.14% and 0.014%, respectively. The median age was 21.5 months for sepsis, 12 months for severe sepsis, and 20.5 months for septic shock. Sepsis, severe sepsis, and septic shock were more often associated with respiratory diseases. The Respiratory Syncytial Virus was the most common agent. The median time to antibiotic and fluid administration was 3 hours in patients with sepsis and severe sepsis. In patients with septic shock, the median times to administer antibiotics, fluid and vasoactive drugs were 2 hours, 2.5 hours and 6 hours, respectively. The median length of hospital stay for patients with sepsis, severe sepsis and septic shock were 3 days, 4 days and 1 day, respectively. The overall mortality was 2%. Conclusion Sepsis had a low prevalence. Early diagnosis and recognition are a challenge for the emergency care pediatrician, the first place of admission.

Características de la infección fúngica invasiva en los pacientes críticos de la altitud con shock séptico

Introducción: En UCI, 19% tienen hongos, 23% desarrollan shock séptico. Cándida albicans el más frecuente. Antimicótico más utilizado es fluconazol. Objetivos: En residentes de la altitud con shock séptico (SS) describiremos: Características, evolución y sensibilidad de la infección fúngica invasiva (IFI) y los contrastaremos con los publicados a nivel del mar. El estudio: Retrospectivo y transversal. Analizamos hemocultivos de adultos con SS y IFIs en una UCI a 3,250 metros de altitud, durante 7 años. Hallazgos: 123 muestras. Las IFIs aumentaron 3.6 para candida albicans. Mujeres con 74 años fue frecuente. BGN representaron 52.88%, BGP 37.9% y hongos 9.22%. Cándida albicans 79.67% con sensibilidad mayor al 90% para Voriconazol, Anfotericina B y Fluconazol. Conclusiones: IFIs con SS fueron causadas por cándida albicans, IFIs aumentaron, existe adecuada sensibilidad a los antimicóticos En la altitud existe mayor frecuencia del sexo femenino, mayor promedio de edad y una buena sensibilidad al fluconazol.

Introduction: In the ICU, 19% have fungi, 23% develop septic shock. Candida albicans the most frequent. The most commonly used antifungal is fluconazole. Objectives: In high altitude residents with septic shock (SS) we will describe: Characteristics, evolution and sensitivity of invasive fungal infection (IFI) and we will contrast them with those published at sea level. The study: Retrospective and transversal. We analyzed blood cultures of adults with SS and IFIs in an ICU at 3,250 meters of altitude, for 7 years. Findings: 123 samples. The IFIs increased 3.6 for candida albicans. Women with 74 years was frequent. BGN represented 52.88%, BGP 37.9% and fungi 9.22%. Candida albicans 79.67% with sensitivity greater than 90% for Voriconazole, Amphotericin B and Fluconazole. Conclusions: IFIs with SS were caused by candida albicans, IFIs increased, there is adequate sensitivity to antifungals. At high altitudes there is a higher frequency of females, higher average age, and good sensitivity to fluconazole.

Predição de choque séptico e hipovolêmico em pacientes de unidade de terapia intensiva com o uso de machine learning / Prediction of septic and hypovolemic shock in intensive care unit patients using machine learning

RESUMO Objetivo: Criar e validar um modelo de predição de choque séptico ou hipovolêmico a partir de variáveis de fácil obtenção coletadas na admissão de pacientes internados em uma unidade de terapia intensiva. Métodos: Estudo de modelagem preditiva com dados de coorte concorrente realizada em um hospital do interior do nordeste brasileiro. Foram incluídos pacientes com 18 anos ou mais sem uso de droga vasoativa no dia da admissão e que foram internados entre novembro de 2020 e julho de 2021. Foram testados os algoritmos de classificação do tipo Decision Tree, Random Forest, AdaBoost, Gradient Boosting e XGBoost para a construção do modelo. O método de validação utilizado foi o k-fold cross validation. As métricas de avaliação utilizadas foram recall, precisão e área sob a curva Receiver Operating Characteristic. Resultados: Foram utilizados 720 pacientes para criação e validação do modelo. Os modelos apresentaram alta capacidade preditiva com área sob a curva Receiver Operating Characteristic de 0,979; 0,999; 0,980; 0,998 e 1,00 para os algoritmos de Decision Tree, Random Forest, AdaBoost, Gradient Boosting e XGBoost, respectivamente. Conclusão: O modelo preditivo criado e validado apresentou elevada capacidade de predição do choque séptico e hipovolêmico desde o momento da admissão de pacientes na unidade de terapia intensiva.

ABSTRACT Objective: To create and validate a model for predicting septic or hypovolemic shock from easily obtainable variables collected from patients at admission to an intensive care unit. Methods: A predictive modeling study with concurrent cohort data was conducted in a hospital in the interior of northeastern Brazil. Patients aged 18 years or older who were not using vasoactive drugs on the day of admission and were hospitalized from November 2020 to July 2021 were included. The Decision Tree, Random Forest, AdaBoost, Gradient Boosting and XGBoost classification algorithms were tested for use in building the model. The validation method used was k-fold cross validation. The evaluation metrics used were recall, precision and area under the Receiver Operating Characteristic curve. Results: A total of 720 patients were used to create and validate the model. The models showed high predictive capacity with areas under the Receiver Operating Characteristic curve of 0.979; 0.999; 0.980; 0.998 and 1.00 for the Decision Tree, Random Forest, AdaBoost, Gradient Boosting and XGBoost algorithms, respectively. Conclusion: The predictive model created and validated showed a high ability to predict septic and hypovolemic shock from the time of admission of patients to the intensive care unit.

Shock séptico, hipercalcemia y síndrome hemofagocítico por paracoccidioidomicosis en una niña de 3 años / Septic shock, hypercalcemia and hemophagocytic syndrome due to paracoccidioidomycosis in a 3-year-old girl

Objetivo: Reportar el caso de una niña que presentó shock séptico, hipercalcemia y síndrome hemofagocítico por paracoccidioidomicosis. Reporte de caso: Paciente mujer de 3 años con 2 meses de enfermedad caracterizada por fiebre, adenopatías, pérdida de peso, distensión abdominal y anemia severa. Llegó en mal estado general, desarrolló shock séptico y un síndrome hemofagocítico. Llamaba la atención la hipercalcemia y lesiones dérmicas. Se le realizó una biopsia de ganglio cervical y aspirado de médula ósea. En esta última se evidenciaron imágenes compatibles con Paracoccidioides, que fueron confirmadas con la tinción de Grocott del ganglio. Se trató con anfotericina B y trimetoprim-sulfametoxazol. La evolución fue favorable y el calcio sérico se mantuvo en rangos normales. Conclusión: Las complicaciones presentadas por paracoccidioidomicosis son raras; sin embargo, el antecedente epidemiológico y el aspirado de médula ósea pueden orientar el diagnóstico y permitir un tratamiento oportuno.

Objetive: Report the case of a girl who presented septic shock, hypercalcemia and hemophagocytic syndrome due to paracoccidioidomycosis. Case report: 3-year-old female patient with 2-month illness characterized by fever, lymphadenopathy, weight loss, abdominal distention, and severe anemia. She arrived in poor general condition, developed septic shock and a hemophagocytic syndrome. The hypercalcemia and dermal lesions were striking. Acervical ganglion biopsy and bone marrow aspirate were performed. In the latter, images compatible with Paracoccidioides were found, which were then confirmed with Grocott's stain. She was treated with amphotericin B and trimethoprim-sulfamethoxazole. The evolution was favorable and serum calcium came back to normal ranges. Conclusion: Complications caused by paracoccidioidomycosis are rare; however, the epidemiological history and bone marrow aspirate should guide the diagnosis and allow prompt treatment.

Comportamiento de la sepsis en pacientes atendidos en el Hospital Pediátrico Paquito González (2009-2019) / Sepsis behavior in patients treated at the Paquito González Pediatric Hospital (2009-2019)

RESUMEN Fundamento La sepsis es un serio problema de salud pública. En Cuba, se mantiene como la cuarta causa de muerte en menores de un año. Conocer el comportamiento de esta grave afección en los pacientes, permitirá tener un respaldo científico para plantear estrategias de salud que garanticen una asistencia médica más integral. Objetivo describir el comportamiento de la sepsis en pacientes pediátricos atendidos en el hospital pediátrico de Cienfuegos. Métodos se realizó un estudio descriptivo, de corte transversal, en el Hospital Pediátrico Paquito González Cueto, de Cienfuegos. Se revisaron las historias clínicas de los niños que, al ingreso en la Unidad de Cuidados Intensivos, se les diagnosticó sepsis, sepsis grave o shock séptico; entre enero de 2009 y diciembre de 2019. Un total de 175 pacientes cumplieron con los criterios de inclusión. Las variables fueron: edad, año, estadio de la sepsis, factores de riesgo biológico y mortalidad. Resultados la incidencia de sepsis en la Unidad de Cuidados Intensivos en relación al total de ingresos fue del 3,6 %. La mortalidad general representó el 30,8 %; y las formas graves de sepsis, el 44,4 %. El grupo de edad más afectado fueron los menores de un año. Las comorbilidades y/o factores de riesgo biológicos más frecuentes fueron la parálisis cerebral infantil y la prematuridad. Conclusión la incidencia de sepsis no ha variado en los últimos años, y la mortalidad asociada a ella, aunque menor, sigue siendo elevada. Las comorbilidades estuvieron presentes en la mitad de los pacientes.

ABSTRACT Background Sepsis is a serious public health problem. In Cuba, it remains the fourth leading cause of death in children under one year of age. Knowing the behavior of this serious condition in patients will allow scientific support to propose health strategies that guarantee a more comprehensive medical care. Objective to describe the behavior of sepsis in pediatric patients treated at the pediatric hospital of Cienfuegos. Methods a descriptive, cross-sectional study was carried out at the Paquito González Cueto Pediatric Hospital in Cienfuegos. The clinical records of the children who, upon admission to the Intensive Care Unit, were diagnosed with sepsis, severe sepsis or septic shock were reviewed; between January 2009 and December 2019. A total of 175 patients met the inclusion criteria. The variables were: age, year, stage of sepsis, biological risk factors and mortality. Results the incidence of sepsis in the Intensive Care Unit in relation to the total admissions was 3.6%. The general mortality represented the 30.8%; and severe forms of sepsis, the 44.4%. The age group most affected was those under one year of age. The most frequent comorbidities and / or biological risk factors were infantile cerebral paralysis and prematurity. Conclusion the incidence of sepsis has not changed in the last years, and the mortality associated with it, although lower, remains high. Comorbidities were in half of the patients.

Impacto da transfusão de eritrócitos no transporte e no metabolismo de oxigênio em pacientes com sepse e choque séptico: uma revisão sistemática e metanálise / Impact of red blood cell transfusion on oxygen transport and metabolism in patients with sepsis and septic shock: a systematic review and meta-analysis

RESUMO Considera-se que a transfusão de eritrócitos melhora a respiração celular durante o choque séptico. Contudo, seu impacto agudo no transporte e no metabolismo de oxigênio nessa condição ainda é amplamente debatido. O objetivo deste estudo foi avaliar o impacto da transfusão de eritrócitos na microcirculação e no metabolismo do oxigênio em pacientes com sepse e choque séptico. Conduzimos um levantamento nas bases de dados MEDLINE®, Elsevier e Scopus. Incluímos estudos realizados com seres humanos adultos com sepse e choque séptico. Realizamos uma revisão sistemática e metanálise com utilização do modelo de efeitos aleatórios de DerSimonian e Laird. Consideramos significante valor de p < 0,05. Incluíram-se na análise 19 manuscritos, correspondentes a 428 pacientes. As transfusões de eritrócitos se associaram com aumento de 3,7% na média combinada de saturação venosa mista de oxigênio (p < 0,001), diminuição de razão de extração de oxigênio de -6,98 (p < 0,001) e nenhum efeito significante no índice cardíaco (0,02 L/minuto; p = 0,96). Obtiveram-se resultados similares em estudos que incluíram mensurações simultâneas de saturação venosa mista de oxigênio, razão de extração de oxigênio e índice cardíaco. As transfusões de eritrócitos levaram a aumento significante na proporção de pequenos vasos perfundidos (2,85%; p = 0,553), enquanto os parâmetros de oxigenação tissular revelaram aumento significante no índice de hemoglobina tissular (1,66; p = 0,018). Estudos individuais relataram melhoras significantes na oxigenação tissular e nos parâmetros microcirculatórios sublinguais em pacientes com microcirculação alterada na avaliação inicial. A transfusão de eritrócitos pareceu melhorar o metabolismo sistêmico de oxigênio com aparente independência de variações no débito cardíaco. Observaram-se alguns efeitos benéficos para a oxigenação tissular e parâmetros microcirculatórios, em particular em pacientes com alterações iniciais mais graves. São necessários mais estudos para avaliar seu impacto clínico e individualizar as decisões relativas à transfusão.

ABSTRACT Red blood cell transfusion is thought to improve cell respiration during septic shock. Nevertheless, its acute impact on oxygen transport and metabolism in this condition remains highly debatable. The objective of this study was to evaluate the impact of red blood cell transfusion on microcirculation and oxygen metabolism in patients with sepsis and septic shock. We conducted a search in the MEDLINE®, Elsevier and Scopus databases. We included studies conducted in adult humans with sepsis and septic shock. A systematic review and meta-analysis were performed using the DerSimonian and Laird random-effects model. A p value < 0.05 was considered significant. Nineteen manuscripts with 428 patients were included in the analysis. Red blood cell transfusions were associated with an increase in the pooled mean venous oxygen saturation of 3.7% (p < 0.001), a decrease in oxygen extraction ratio of -6.98 (p < 0.001) and had no significant effect on the cardiac index (0.02L/minute; p = 0,96). Similar results were obtained in studies including simultaneous measurements of venous oxygen saturation, oxygen extraction ratio, and cardiac index. Red blood cell transfusions led to a significant increase in the proportion of perfused small vessels (2.85%; p = 0.553), while tissue oxygenation parameters revealed a significant increase in the tissue hemoglobin index (1.66; p = 0.018). Individual studies reported significant improvements in tissue oxygenation and sublingual microcirculatory parameters in patients with deranged microcirculation at baseline. Red blood cell transfusions seemed to improve systemic oxygen metabolism with apparent independence from cardiac index variations. Some beneficial effects have been observed for tissue oxygenation and microcirculation parameters, particularly in patients with more severe alterations at baseline. More studies are necessary to evaluate their clinical impact and to individualize transfusion decisions.

Esquema de manejo de COVID-19 en adultos / COVID-19 treatment guidelines in adults

RESUMEN Un nuevo coronavirus, denominado COVID-19, fue descubierto por el brote iniciado en China a finales de diciembre del año 2019. Los síntomas característicos son fiebre, tos seca, dificultad respiratoria y malestar general. Muchas investigaciones se están llevando a cabo ya que, si bien no es una enfermedad considerada mortal, tiene un índice de contagio muy alto. Sin embargo, junto a los cuidados hospitalarios y extrahospitalarios, existe un grupo de fármacos que se vienen utilizando para combatir esta enfermedad, tales como hidroxicloroquina, cloroquina, remdesivir, lopinavir/ritonavir, tocilizumab, interferón beta 1B, entre otros.

ABSTRACT A novel coronavirus disease called COVID-19 was discovered as a result of the outbreak that began in China at the end of December 2019. Common symptoms are fever, dry cough, shortness of breath and malaise. Several research are being conducted since the disease has high transmission rate even though it is not considered life-threatening. However, together with hospital and out-of-hospital care, there is a group of medications being used to fight this disease, such as hydroxychloroquine, chloroquine, remdesivir, lopinavir/ritonavir, tocilizumab, interferon beta-1b, among others.

Anesthetic management of a parturient with Marfan syndrome scheduled for cesarean section: case report and review of literature / Manejo anestésico de una parturienta con síndrome de Marfan programada para cesárea: informe de un caso y revisión de la literatura

Abstract: Introduction: Marfan syndrome is an inherited disorder that affects connective tissue. Case: We report the anesthetic management of a parturient with Marfan syndrome scheduled for an elective C-section. Successful use of a combined spinal-epidural technique was used to provide neuraxial anesthesia; however, she presented an unfavorable evolution due to maternal sepsis. Likewise, a literature review of combined spinal-epidural anesthesia for C-sections in Marfan syndrome pregnant women was performed. Conclusion: Anesthetic management of parturients affected by Marfan syndrome during the cesarean section can be challenging. Strict blood pressure control during the intraoperative period has cornerstone importance. Likewise, neuraxial techniques have a significant percentage of failure in these patients.

Resumen: Introducción: El síndrome de Marfan es un desorden hereditario que afecta el tejido conectivo. Caso: Reportamos el manejo anestésico de una parturienta con síndrome de Marfan programada para una cesárea electiva. Para administrar anestesia neuroaxial se utilizó un bloqueo combinado espinal-epidural; sin embargo, la paciente presentó una evolución desfavorable debido a sepsis materna. Asimismo, se realizó una revisión de la literatura del uso de esta técnica anestésica para cesárea en gestantes con síndrome de Marfan. Conclusión: El manejo anestésico de parturientas afectadas por este síndrome puede ser complicado. El control estricto de la presión arterial durante el intraoperatorio tiene importancia fundamental. Además, las técnicas neuroaxiales tienen un porcentaje significativo de fallo en estas pacientes.

Evolución clínica de niños con shock séptico refractario a fluidos tratados con dopamina o adrenalina. Estudio retrospectivo en un servicio de emergencias pediátrico de Argentina / Clinical outcome of children with fluid-refractory septic shock treated with dopamine or epinephrine. A retrospective study at a pediatric emergency department in Argentina

RESUMEN Objetivo: Analizar la evolución clínica de niños con shock séptico refractario a volumen tratados inicialmente con dopamina o adrenalina. Métodos: Estudio de cohorte retrospectivo con ámbito en un servicio de urgencias pediátrico de un hospital de tercer nivel. Población: niños ingresados con shock séptico refractario a volumen. Se comparó la evolución clínica entre 2 grupos: Grupo Dopamina y Grupo Adrenalina. Las variables de interés fueron: uso de ventilación mecánica invasiva, días de inotrópicos, estancia hospitalaria, estancia en cuidados intensivos y mortalidad. Para variables numéricas y categóricas utilizamos medidas de tendencia central y para comparación las pruebas de U Mann Whitney y χ2 test. Resultados: Incluimos 118 pacientes. El 58,5% recibió dopamina y 41,5% adrenalina. El uso de ventilación mecánica invasiva fue 38,8% para adrenalina versus 40,6% para dopamina (p = 0,84) con una mediana de 4 días para adrenalina y 5,5 para dopamina (p = 0,104). La mediana para días de inotrópicos fue de 2 días para ambos grupos (p = 0,714). La mediana de estancia hospitalaria fue de 11 para adrenalina y 13 para dopamina (p = 0,554) y de estancia en cuidados intensivos se registró una mediana de 4 días (0 - 81 días) siendo igual en ambos grupos (p = 0,748). La mortalidad fue de 5% para el Grupo Adrenalina versus 9% para el Grupo Dopamina (p = 0,64). Conclusiones: En nuestro centro, no observamos diferencias en uso de ventilación mecánica invasiva y tiempo de inotrópicos, estancia hospitalaria y cuidados intensivos y mortalidad entre niños ingresados al servicio de urgencias pediátrico con diagnóstico de shock séptico refractario a volumen tratados inicialmente con dopamina o adrenalina.

Abstract Objective: To analyze the clinical outcome of children with fluid-refractory septic shock initially treated with dopamine or epinephrine. Methods: A retrospective cohort study was conducted at a pediatric emergency department of a tertiary hospital. Population: children admitted because of fluid-refractory septic shock. Clinical outcome was compared between two groups: Dopamine and Epinephrine. Variables evaluated were use of invasive mechanical ventilation, days of inotropic therapy, length of hospital stay, intensive care stay, and mortality. For numerical and categorical variables, we used measures of central tendency. They were compared by the Mann-Whitney U-test and the (2 test. Results: We included 118 patients. A total of 58.5% received dopamine and 41.5% received epinephrine. The rate of invasive mechanical ventilation was 38.8% for epinephrine versus 40.6% for dopamine (p = 0.84), with a median of 4 days for the Epinephrine Group and 5.5 for the Dopamine Group (p = 0.104). Median time of inotropic therapy was 2 days for both groups (p = 0.714). Median hospital stay was 11 and 13 days for the Epinephrine and Dopamine groups, respectively (p = 0.554), and median stay in intensive care was 4 days (0 - 81 days) in both groups (p = 0.748). Mortality was 5% for the Epinephrine Group versus 9% for the Dopamine Group (p = 0.64). Conclusions: At our center, no differences in use of invasive mechanical ventilation, time of inotropic therapy, length of hospital stay, length of intensive care unit stay, or mortality were observed in children admitted to the pediatric emergency department with a diagnosis of fluid-refractory septic shock initially treated with dopamine versus epinephrine.

Relación entre el índice gradiente dióxido de carbono/gradiente arteriovenoso de oxígeno y lactato en el choque séptico por neumonía / Relationship between carbon dioxide gradient/arteriovenous oxygen gradient index and lactate in septic shock secondary to pneumonia

RESUMEN Objetivo Determinar la relación del índice gradiente de dióxido de carbono/gradiente arteriovenoso de oxígeno y lactato en pacientes con neumonía complicada y choque séptico en áreas críticas del Hospital III EsSalud Chimbote durante el periodo 2018 y 2019. Materiales y métodos Estudio de tipo cuantitativo, observacional, correlacional y longitudinal de tendencias. La unidad de análisis está constituida por los pacientes con neumonía complicada por choque séptico que presentan lecturas de índice de gradiente dióxido de carbono / gradiente arteriovenoso de oxígeno y lecturas de lactato. Resultados Se incluyeron 90 pacientes con neumonía complicada por choque séptico. El presente trabajo de investigación demuestra una fuerte relación entre el índice de gradiente de gases y el lactato sérico: al inicio, 3 horas, 6 horas y a las 12 horas, de iniciado y monitorizado estos pacientes. Conclusiones El índice del gradiente de dióxido de carbono/gradiente concentración arterio venoso de oxígeno > 1.4, se relaciona con el lactato sérico, en pacientes con shock séptico por neumonía.

ABSTRACT Objective To determine the relationship between carbon dioxide gradient/arteriovenous oxygen gradient index and lactate in patients with pneumonia complicated by septic shock in areas delivering care for critically ill or injured patients of the Hospital III EsSalud Chimbote between 2018 and 2019. Materials and methods A quantitative, observational, correlational, longitudinal trend study. The study population consisted of patients with pneumonia complicated by septic shock who had carbon dioxide gradient/arteriovenous oxygen gradient index and lactate readings. Results Ninety (90) patients with pneumonia complicated by septic shock participated in the research. The present study showed a robust relationship between gas gradient index and serum lactate when monitoring patients at baseline, 3 hours, 6 hours and 12 hours. Conclusions There is a relationship between carbon dioxide gradient/arteriovenous oxygen gradient index (> 1.4) and serum lactate levels in patients with septic shock secondary to pneumonia.

Epidemiología del shock séptico en un servicio de atención médica prehospitalaria en cinco ciudades colombianas / Epidemiology of septic shock in prehospital medical services in five Colombian cities

RESUMEN Objetivo: Explorar la asociación entre factores demográficos y clínicos con la presentación de shock séptico en pacientes atendidos en un servicio prehospitalario de emergencias en cinco ciudades colombianas entre los años 2015-2016. Métodos: Estudio de corte transversal con recolección retrospectiva de datos. Se recolectó información clínica y demográfica de las historias clínicas de pacientes con diagnóstico de sepsis que recibieron atención prehospitalaria en cinco ciudades colombianas en los años 2015 y 2016. Se realizó una verificación del diagnóstico de shock séptico en el 20% de los casos, dando origen a dos escenarios analizados: observado y verificado. Se analizó la asociación con pruebas de Chi cuadrado, t de Student y finalmente con un modelo de regresión logística ajustado. Se consideró covariables significativas aquellas con p < 0,05. Resultados: Se presentó una mayor frecuencia del evento en mujeres (62,6%) y en mayores de 80 años (64,5%), sin ser factores diferenciadores para shock séptico. El foco infeccioso más común fue urinario. En el escenario observado, los mayores de 60 años (RP: 3,22; IC95%: 1,45 - 35,01) y el antecedente de cáncer fueron las características asociadas con el shock séptico (RP: 1,20; IC95%: 1,2 - 12,87), mientras que en el grupo verificado fueron la enfermedad pulmonar obstructiva crónica (RP: 1,99; IC95%: 1,26 - 7,14), el antecedente de cáncer (RP: 1,15; IC95%: 1,11 - 6,62) y presencia de hipovolemia (RP: 1,41; IC95%: 1,02 - 5,50). Conclusión: Los factores de riesgo más importantes para shock séptico en pacientes de atención prehospitalaria en cinco ciudades colombianas fueron las enfermedades oncológicas, las pulmonares e hipovolemia.

ABSTRACT Objective: To explore the association between demographic and clinical factors and the presentation of septic shock in patients treated by prehospital emergency services in five Colombian cities between 2015 and 2016. Methods: This was a cross-sectional study with retrospective data collection. Clinical and demographic data were collected from the medical records of patients diagnosed with sepsis who received prehospital care in five Colombian cities in 2015 and 2016. The diagnosis of septic shock was checked in 20% of the cases, generating two analyzed scenarios: observed and verified. Data were analyzed using the chi-square test, Student's t test and an adjusted logistic regression model. Covariates with p < 0.05 were considered significant. Results: There was a higher frequency of septic shock in women (62.6%) and in individuals older than 80 years (64.5%), but these were not differentiating factors for septic shock. The most common source of infection was the urinary tract. In the observed scenario, age over 60 (prevalence ratio (PR): 3.22; 95% confidence interval (CI): 1.45 - 35.01) and history of cancer (PR: 1.20; 95%CI: 1.2 - 12.87) were the characteristics associated with septic shock, whereas in the verified scenario, chronic obstructive pulmonary disease (PR: 1.99; 95%CI: 1.26 - 7.14), history of cancer (PR: 1.15; 95%CI: 1.11 - 6.62) and presence of hypovolemia (PR: 1.41; 95%CI: 1.02 - 5.50) were observed. Conclusion: The most important risk factors for septic shock in prehospital care patients in five Colombian cities were oncological and pulmonary diseases and hypovolemia.

Sobrecarga de fluidos em pacientes com choque séptico e depuração de lactato como alvo terapêutico: um estudo de coorte retrospectiva / Fluid overload in patients with septic shock and lactate clearance as a therapeutic goal: a retrospective cohort study

RESUMO Objetivo: Avaliar se a sobrecarga de fluidos na terapia hídrica é fator prognóstico para pacientes com choque séptico quando ajustada para os alvos de depuração de lactato. Métodos: Este estudo envolveu uma coorte retrospectiva e foi conduzido em um hospital de cuidados nível IV localizado em Bogotá, na Colômbia. Foi organizada uma coorte de pacientes com choque séptico, e suas características e balanço hídrico foram documentados. Os pacientes foram estratificados por níveis de exposição segundo a magnitude da sobrecarga de fluidos por peso corporal após 24 horas de terapia. A mortalidade foi determinada aos 30 dias, e foi desenvolvido um modelo de regressão logística incondicional com ajuste para fatores de confusão. A significância estatística foi estabelecida com nível de p ≤ 0,05. Resultados: Foram 213 pacientes com choque séptico e, após o tratamento, 60,8% deles tiveram depuração de lactato acima de 50%. Dentre os pacientes 97 (46%) desenvolveram sobrecarga de fluidos ≥ 5%, e apenas 30 (13%) desenvolveram sobrecarga ≥ 10%. Pacientes com sobrecarga de fluidos ≥ 5% receberam, em média, 6.227mL de soluções cristaloides (DP ± 5.838mL) em 24 horas, enquanto os não expostos receberam 3.978mL (DP ± 3.728mL), com p = 0.000. Os pacientes que desenvolveram sobrecarga de fluidos foram mais frequentemente tratados com ventilação mecânica (70,7% versus 50,8%; p = 0,003), albumina (74,7% versus 55,2%; p = 0,003) e corticosteroides (53,5% versus 35,0%; p = 0,006) do que os que não desenvolveram sobrecarga de fluidos. Em análise multivariada, o balanço acumulado de fluidos não se associou com mortalidade (RC 1,03; IC95% 0,89 - 1,20). Conclusão: Após ajuste para severidade da condição e depuração adequada de lactato, a ocorrência de balanço hídrico positivo não se associou com aumento da mortalidade nessa coorte latino-americana de pacientes sépticos.

ABSTRACT Objective: To assess whether fluid overload in fluid therapy is a prognostic factor for patients with septic shock when adjusted for lactate clearance goals. Methods: This was a retrospective cohort study conducted at a level IV care hospital in Bogotá, Colombia. A cohort of patients with septic shock was assembled. Their characteristics and fluid balance were documented. The patients were stratified by exposure levels according to the magnitude of fluid overload by body weight after 24 hours of therapy. Mortality was determined at 30 days, and an unconditional logistic regression model was created, adjusting for confounders. The statistical significance was established at p ≤ 0.05. Results: There were 213 patients with septic shock, and 60.8% had a lactate clearance ≥ 50% after treatment. Ninety-seven (46%) patients developed fluid overload ≥ 5%, and only 30 (13%) developed overload ≥ 10%. Patients exhibiting fluid overload ≥ 5% received an average of 6227mL of crystalloids (SD ± 5838mL) in 24 hours, compared to 3978mL (SD ± 3728mL) among unexposed patients (p = 0.000). The patients who developed fluid overload were treated with mechanical ventilation (70.7% versus 50.8%) (p = 0.003), albumin (74.7% versus 55.2%) (p = 0.003) and corticosteroids (53.5% versus 35.0%) (p = 0.006) more frequently than those who did not develop fluid overload. In the multivariable analysis, cumulative fluid balance was not associated with mortality (OR 1.03; 95%CI 0.89 - 1.20). Conclusions: Adjusting for the severity of the condition and adequate lactate clearance, cumulative fluid balance was not associated with increased mortality in this Latin American cohort of septic patients.

O comportamento da pressão arterial após elevação da pressão parcial positiva final pode auxiliar na determinação do status de fluido-responsividade em pacientes com choque séptico? / Can the behavior of blood pressure after elevation of the positive end-expiratory pressure help to determine the fluid responsiveness status in patients with septic shock?

RESUMO Objetivo: Avaliar se a diminuição da pressão arterial provocada pela elevação da pressão parcial positiva final corresponde à variação da pressão de pulso como indicador de fluido-responsividade. Métodos: Estudo de caráter exploratório que incluiu prospectivamente 24 pacientes com choque séptico ventilados mecanicamente e submetidos a três etapas de elevação da pressão parcial positiva final: de 5 para 10cmH2O (nível da pressão parcial positiva final 1), de 10 para 15cmH2O (nível da pressão parcial positiva final 2) e de 15 para 20cmH2O (nível da pressão parcial positiva final 3). Alterações da pressão arterial sistólica, da pressão arterial média e da variação da pressão de pulso foram avaliadas durante as três manobras. Os pacientes foram classificados como responsivos (variação da pressão de pulso ≥ 12%) e não responsivos a volume (variação da pressão de pulso < 12%). Resultados: O melhor desempenho para identificar pacientes com variação da pressão de pulso ≥ 12% foi observado no nível da pressão parcial positiva final 2: variação de pressão arterial sistólica de -9% (área sob a curva de 0,73; IC95%: 0,49 - 0,79; p = 0,04), com sensibilidade de 63% e especificidade de 80%. A concordância foi baixa entre a variável de melhor desempenho (variação de pressão arterial sistólica) e a variação da pressão de pulso ≥ 12% (kappa = 0,42; IC95%: 0,19 - 0,56). A pressão arterial sistólica foi < 90mmHg no nível da pressão parcial positiva final 2 em 29,2% dos casos e em 41,6,3% no nível da pressão parcial positiva final 3. Conclusão: Variações da pressão arterial em resposta à elevação da pressão parcial positiva final não refletem de modo confiável o comportamento da variação da pressão de pulso para identificar o status da fluido-responsividade.

Abstract Objective: To evaluate whether the decrease in blood pressure caused by the increase in the positive end-expiratory pressure corresponds to the pulse pressure variation as an indicator of fluid responsiveness. Methods: This exploratory study prospectively included 24 patients with septic shock who were mechanically ventilated and subjected to three stages of elevation of the positive end-expiratory pressure: from 5 to 10cmH2O (positive end-expiratory pressure level 1), from 10 to 15cmH2O (positive end-expiratory pressure level 2), and from 15 to 20cmH2O (positive end-expiratory pressure level 3). Changes in systolic blood pressure, mean arterial pressure, and pulse pressure variation were evaluated during the three maneuvers. The patients were classified as responsive (pulse pressure variation ≥ 12%) or unresponsive to volume replacement (pulse pressure variation < 12%). Results: The best performance at identifying patients with pulse pressure variation ≥ 12% was observed at the positive end-expiratory pressure level 2: -9% systolic blood pressure variation (area under the curve 0.73; 95%CI: 0.49 - 0.79; p = 0.04), with a sensitivity of 63% and specificity of 80%. Concordance was low between the variable with the best performance (variation in systolic blood pressure) and pulse pressure variation ≥ 12% (kappa = 0.42; 95%CI: 0.19 - 0.56). The systolic blood pressure was < 90mmHg at positive end-expiratory pressure level 2 in 29.2% of cases and at positive end-expiratory pressure level 3 in 41.63% of cases. Conclusion: Variations in blood pressure in response to the increase in positive end-expiratory pressure do not reliably reflect the behavior of the pulse pressure as a measure to identify the fluid responsiveness status.