Patrón de neumonía organizativa en TC de tórax: prevalencia y asociación con resultados clínicos en una cohorte de pacientes con COVID-19 grave/crítico / Organizing Pneumonia Pattern on Chest CT: Prevalence and Association with Clinical Outcomes in a Cohort of Patients with Severe/Critical COVID-19

Introducción: La neumonía por COVID-19 puede presentarse con dos patrones radio-lógicos: daño alveolar difuso o neumonía organizativa. Estos patrones tienen diferente evolución y pronóstico en pacientes sin infección por COVID-19. Nuestro objetivo fue evaluar la prevalencia del patrón radiológico de neumonía organizativa y su asociación con los desenlaces clínicos.Métodos: Se realizó un estudio de cohorte retrospectivo que incluyó a pacientes adultos hospitalizados por COVID-19 grave/crítica a los que se les realizó una tomografía computarizada de tórax en los 21 días posteriores al diagnóstico. Los patrones radiológicos fueron revisados y clasificados por dos radiólogos expertos. Resultados: De los 80 pacientes incluidos, el 89% (n=71) presentaron un patrón compatible con neumonía organizativa. Los principales hallazgos radiológicos fueron la distribución multilobar (98,7%) y bilateral (97,6%) con opacidades en vidrio esmerilado (97,6%). El 44% (n=33) de los sujetos requirió ingreso en cuidados intensivos, de los cuales el 24% (n=19) recibió ventilación mecánica. La presencia de neumonía organizativa se asoció de forma independiente con una disminución de las probabilidades de ventilación mecánica o muerte (Odds ratio 0,14; intervalo de confianza del 95%: 0,02 - 0,96; valor de p 0,045) en un modelo multivariado que incluía la edad, el sexo, el IMC y la afectación pulmonar en la TC.Conclusiones: Un patrón radiológico de neumonía organizativa es altamente prevalen-te en pacientes con COVID-19 grave/crítico y se asocia con mejores resultados clínico

Introduction: COVID-19 pneumonia can present with two distinct radiologic patterns: diffuse alveolar damage or organizing pneumonia. These patterns have been linked to different outcomes in non-COVID-19 settings. We sought to assess the prevalence of organizing pneumonia radiologic pattern and its association with clinical outcomes. Methods: We performed a retrospective cohort study including adult patients hospita- lized for severe/critical COVID-19 who underwent chest computed tomography within 21 days of diagnosis. Radiologic patterns were reviewed and classified by two expert radiologists. Results: Among 80 patients included, 89% (n=71) presented a pattern consistent with organizing pneumonia. The main radiologic findings were multilobar (98.7%) and bilateral (97.6%) distribution with ground glass opacities (97.6%). Intensive care admission was required for 44% (n=33) of subjects, of which 24% (n=19) received mechanical ventilation. The presence of organizing pneumonia was independently associated with a decreased odds of mechanical ventilation or death (Odds ratio 0.14; 95% confidence interval 0.02 - 0.96; p value 0.045) in a multivariate model including age, gender, BMI and lung involvement on CT. Conclusion: A radiologic pattern of organizing pneumonia is highly prevalent in patients with severe/critical COVID-19 and is associated with improved clinical outcomes.

Síndrome de abstinência em unidade de tratamento intensivo pediátrico: protocolo de revisão sistemática / Abstinence syndrome in pediatric intensive care unit: a systematic review protocol

OBJETIVO: Verificar qual o tratamento mais indicado para a prevenção e redução dos sinais e sintomas de abstinência em crianças criticamente doentes por meio de uma revisão sistemática da literatura mundial. MÉTODO: A revisão sistemática será conduzida conforme a metodologia PRISMA e Cochrane, com registro no PROSPERO, sob o número de ID CRD42021274670, nas respectivas bases de dados PubMed, LILACS, Embase, Web of Science, Cochrane, CINAHL, Cochrane Database Systematic Review e CENTRAL. As buscas serão realizadas por dois avaliadores independentes, um terceiro realizará o intermédio se necessário. Os dados serão inseridos no programa de software Zotero que irá excluir os artigos duplicados, após o material selecionado será transferido para planilha Excel em instrumento próprio. Os estudos serão classificados quanto ao seu nível de evidência, viés e fator de risco. Os resultados serão analisados e tabulados e discutidos a fim de melhor compreensão dos resultados. Se possível, serão realizadas meta-análises para os resultados agregados.

OBEJECTIVE: To verify the most appropriate treatment for the prevention and reduction of the signs and symptoms of abstinence in critically ill children through a systematic review of the world literature. METHOD: The systematic review will be conducted according to the PRISMA and Cochrane methodology, with registration at PROSPERO, under the ID number CRD42021274670, in the respective databases, PUBMed, LILACS, Embase, Web of Science, Cochrane, CINAHL, Cochrane Database Systematic Review, and CENTRAL, searches will be carried out by two independent evaluators, and a third party will perform the intermediate if necessary. The data will be entered into the Zotero software program that will delete duplicate articles after the selected material is transferred to an Excel spreadsheet on its instrument. The studies will be classified according to their level of evidence, bias, and risk factors. The results will be analyzed, tabulated, and discussed to understand the results better. If possible, meta-analyzes will be carried out for the aggregated results.

Effects of traditional Chinese medicine on treatment outcomes in severe COVID-19 patients: a single-centre study / 中国天然药物

As the search for effective treatments for COVID-19 continues, the high mortality rate among critically ill patients in Intensive Care Units (ICU) presents a profound challenge. This study explores the potential benefits of traditional Chinese medicine (TCM) as a supplementary treatment for severe COVID-19. A total of 110 critically ill COVID-19 patients at the Intensive Care Unit (ICU) of Vulcan Hill Hospital between Feb., 2020, and April, 2020 (Wuhan, China) participated in this observational study. All patients received standard supportive care protocols, with a subset of 81 also receiving TCM as an adjunct treatment. Clinical characteristics during the treatment period and the clinical outcome of each patient were closely monitored and analysed. Our findings indicated that the TCM group exhibited a significantly lower mortality rate compared with the non-TCM group (16 of 81 vs 24 of 29; 0.3 vs 2.3 person/month). In the adjusted Cox proportional hazards models, TCM treatment was associated with improved survival odds (P < 0.001). Furthermore, the analysis also revealed that TCM treatment could partially mitigate inflammatory responses, as evidenced by the reduced levels of proinflammatory cytokines, and contribute to the recovery of multiple organic functions, thereby potentially increasing the survival rate of critically ill COVID-19 patients.

Uso de la ultrasonografía en la evaluación de la retención urinaria en pacientes críticos / Use of ultrasonography in the evaluation of urinary retention in critically ill patients / Utilização da ultrassonografia na avaliação de retenção urinária em pacientes críticos

Objetivo: medir el volumen urinario por medio de la ecografía vesical, realizado por una enfermera en pacientes críticos, después de la retirada de la sonda urinaria permanente y verificar los factores relacionados en la retención urinaria. Método: estudio cuantitativo, observacional y transversal, realizado con 37 pacientes críticos de ambos sexos, mayores de 18 años, con retiro de catéter vesical permanente en las últimas 48 horas. Se utilizó un cuestionario con variables sociodemográficas y clínicas y el examen ecográfico. Se utilizó un cuestionario con variables sociodemográficas y clínicas y el examen ecográfico. Los datos fueron presentados a través de distribución de frecuencias, medidas de centralidad y variabilidad, asociación mediante la prueba exacta de Fisher y, para el análisis, regresión logística binomial múltiple. Resultados: de los 37 pacientes, en su mayoría fue de sexo masculino, con una edad média de 54,9 años. La medición del volumen urinario por ecografía osciló entre 332,3 y 950 ml, y el 40,54% de los pacientes presentó retención urinaria. La retención urinaria se asoció significativamente a la aparición de infección urinaria, estreñimiento intestinal y diuresis por rebosamiento espontáneo. Los pacientes con infección del tracto urinario tenían 7,4 veces más probabilidades de tener retención urinaria. Conclusión: la ecografía vesical fue eficaz para medir el volumen urinario después de retirar el catéter urinario permanente y puede contribuir a la detección de retención urinaria.

Objective: to measure urinary volume through bladder ultrasound, performed by a nurse in critically ill patients, after removal of the indwelling urinary catheter and to verify the related factors on urinary retention. Method: quantitative, observational and cross-sectional study, carried out with 37 critically ill patients of both sexes, over 18 years of age, with removal of indwelling urinary catheter in the last 48 hours. A questionnaire containing sociodemographic and clinical variables and an ultrasound examination were used. Data were presented through frequency distribution, centrality and variability measures, association using Fisher`s exact test and, for analysis multiple binomial logistic regression analysis. Results: the 37 patients were mostly male, with a mean age of 54.9 years. The measurement of urinary volume by ultrasound ranged from 332.3 to 950 ml, and 40.54% of patients had urinary retention. Urinary retention was significantly associated with the occurrence of urinary tract infection, intestinal constipation and spontaneous overflow diuresis. Patients with urinary tract infection were 7.4 times more likely to have urinary retention. Conclusion: bladder ultrasonography was effective in measuring urinary volume after removal of the indwelling urinary catheter and and may contribute to the detection of urinary retention.

Objetivo: mensurar o volume urinário por meio da ultrassonografia de bexiga, realizada por enfermeiro em pacientes críticos, após a remoção do cateter vesical de demora, e verificar os fatores relacionados na retenção urinária. Método: estudo quantitativo, observacional e transversal, realizado com 37 pacientes críticos de ambos os sexos, idade superior a 18 anos, com retirada de cateter vesical de demora nas últimas 48 horas. Foram utilizados um questionário contendo as variáveis sociodemográficas e clinicas e o exame de ultrassonografia. Os dados foram apresentados por meio da distribuição de frequência, medidas de centralidade e de variabilidade, associação pelo teste exato de Fisher e, para análise a regressão logística binomial múltipla. Resultados: dos 37 pacientes, a maioria era do sexo masculino, com média de idade de 54,9 anos. A mensuração do volume urinário pela ultrassonografia variou de 332,3 a 950 ml, sendo que 40,54% dos pacientes apresentaram retenção urinária. A retenção urinaria apresentou associação significativa para a ocorrência de infecção do trato urinário, constipação intestinal e diurese espontânea por transbordamento. Pacientes com infecção urinária tiveram 7,4 vezes mais chance de apresentar retenção urinária. Conclusão: ultrassonografia de bexiga foi eficaz para mensurar o volume urinário após a remoção do cateter vesical de demora e poderá contribuir na detecção da retenção urinária.

Respuesta emocional de pacientes cardiológicos en estado crítico durante la higiene en cuidados intensivos: estudio prospectivo y descriptivo / Emotional response of critically-ill cardiac patients during hygiene procedures in intensive care: a prospective and descriptive study / Resposta emocional de pacientes cardiológicos críticos durante a higiene em cuidados intensivos: um estudo prospectivo e descritivo

Objetivo: analizar la respuesta emocional de pacientes conscientes en estado crítico durante la higiene diaria en una unidad de cuidados intensivos cardiológicos y compararla en función de experiencias previas o no. Método: estudio prospectivo y descriptivo. Encuesta ad hoc de 30 ítems realizada a 148 pacientes y basada en la higiene del primer día. Se formulan preguntas sobre los sentimientos durante la higiene y aspectos positivos y negativos de la experiencia. Se compara a los pacientes en función de si se los había higienizado con anterioridad. Resultados: el 67,6% fueron hombres y la media de edad fue de 67±15 años. El 45,9% presentó conformismo, el 27% sintió vergüenza y el 86,3% agradeció que le hablaran durante la higiene. Al 33,1% de los pacientes nunca les habían realizado higiene en la cama, eran significativamente más jóvenes y solteros, y tenían menor sensación de limpieza. El 32% expresó que le gustaría que un familiar colaborase en la higiene. Conclusión: los pacientes no sienten que se invade su intimidad cuando se los higieniza y aprecian la comunicación con el personal sanitario durante estos cuidados. Los pacientes a quienes no les habían realizado higiene en la cama previamente son más jóvenes, sienten mayor vergüenza y les molestan más las interrupciones, siendo más conscientes de ellas.

Objective: to analyze the emotional response of critically-ill conscious patients during daily hygiene procedures in a Cardiology Intensive Care Unit and to compare it based on the existence of previous experiences or not. Method: a prospective and descriptive study. A 30-item ad hoc survey based on the first-day hygiene procedures was applied to 148 patients. Questions are asked about the feelings during the hygiene procedures and about positive and negative aspects of the experience. The patients are compared based on whether they had been already subjected to hygiene procedures or not. Results: 67.6% were men and their mean age was 67±15 years old; 45.9% proved to be satisfied, 27% felt embarrassment and 86.3% were grateful to the professionals for talking to them during the hygiene procedures. 33.1% of the patients had never been subjected to hygiene procedures in bed, were significantly younger and single, and presented a lower cleanliness sensation. 32% stated that they would like for a family member to collaborate in the hygiene procedures. Conclusion: the patients do not feel that their intimacy is invaded when they are subjected to hygiene procedures and appreciate communication with the health personnel while this care is provided. Those who had never been subjected to hygiene procedures in bed are younger, feel more embarrassed and are more disturbed by interruptions, in addition to being more aware of them.

Objetivo: analisar a resposta emocional de pacientes críticos conscientes durante a higiene diária em uma unidade de terapia intensiva cardíaca e compará-la considerando ou não as experiências prévias. Método: estudo prospectivo e descritivo. Foi aplicado questionário ad hoc de 30 itens a 148 pacientes, com base na higiene do primeiro dia. Foram feitas perguntas sobre sentimentos durante a higiene e aspectos positivos e negativos da experiência. Os pacientes foram comparados considerando o fato de terem sido higienizados anteriormente. Resultados: 67,6% eram homens e a idade média foi de 67±15 anos. 45,9% apresentavam conformismo, 27% se sentiram envergonhados e 86,3% estavam gratos por terem conversado com eles durante a higiene; 33,1% dos pacientes acamados nunca haviam recebido cuidados de higiene no leito, eram significativamente mais jovens e solteiros, e tinham um senso de limpeza mais baixo; 32% expressaram que gostariam que um membro da família ajudasse na higiene. Conclusão: os pacientes não se sentiram invadidos em sua intimidade quando receberam os cuidados de higiene e apreciaram a comunicação com o pessoal de saúde durante o procedimento. Os pacientes que não tinham recebido cuidados de higiene no leito anteriormente são mais jovens, sentem-se mais constrangidos e mais incomodados pelas interrupções, sendo mais conscientes delas.

Disminución de la debilidad muscular adquirida en una unidad de cuidados intensivos con la implementación de un protocolo multicomponente: ensayo clínico cuasiexperimental / Decrease in the intensive care unit-acquired weakness with a multicomponent protocol implementation: A quasi-experimental clinical trial

Introducción. La debilidad adquirida en las unidades de cuidados intensivos es una complicación frecuente de los pacientes con enfermedades críticas, que puede tener un impacto negativo en su pronóstico a corto y a largo plazo. Objetivos. Evaluar si la utilización de un protocolo multicomponente, que incluye movilidad activa temprana, manejo efectivo del dolor, reducción de la sedación, medidas no farmacológicas para prevenir el delirium, estimulación cognitiva y apoyo familiar, puede disminuir la incidencia de debilidad adquirida en las unidades de cuidados intensivos al momento del egreso del paciente. Materiales y métodos. Se trata de un ensayo clínico, no aleatorizado, en dos unidades de cuidados intensivos mixtas de un hospital de tercer nivel. Los participantes fueron pacientes mayores de 14 años con ventilación mecánica invasiva por más de 48 horas. Se aplicó como intervención un protocolo multicomponente y como control se utilizó el cuidado usual o estándar. Resultados. Ingresaron 188 pacientes al estudio, 82 al grupo de intervención y 106 al grupo control. La tasa de debilidad adquirida en las unidades de cuidados intensivos al egreso de la unidad fue significativamente menor en el grupo de intervención (41,3 % versus 78,9 %, p<0,00001). La mediana del puntaje de movilidad al momento del alta de la unidad de cuidados intensivos fue mayor en el grupo de intervención (3,5 versus 2, p<0,0138). No se encontraron diferencias estadísticamente significativas en las medianas de días libres de respiración mecánica asistida, ni de unidad de cuidados intensivos al día 28, tampoco en la tasa de mortalidad general al egreso del hospital (18 versus 15 días, p<0,49; 18,2 % versus 27,3 %, p<0,167). Conclusiones. Un protocolo multicomponente que incluía movilidad activa temprana tuvo un impacto significativo en la reducción de la debilidad adquirida en las unidades de cuidados intensivos al egreso en comparación con el cuidado estándar.

Introduction. Intensive care unit-acquired weakness is a frequent complication that affects the prognosis of critical illness during hospital stay and after hospital discharge. Objectives. To determine if a multicomponent protocol of early active mobility involving adequate pain control, non-sedation, non-pharmacologic delirium prevention, cognitive stimulation, and family support, reduces intensive care unit-acquired weakness at the moment of discharge. Materials and methods. We carried out a non-randomized clinical trial in two mixed intensive care units in a high-complexity hospital, including patients over 14 years old with invasive mechanical ventilation for more than 48 hours. We compared the intervention -the multicomponent protocol- during intensive care hospitalization versus the standard care. Results. We analyzed 82 patients in the intervention group and 106 in the control group. Muscle weakness acquired in the intensive care unit at the moment of discharge was less frequent in the intervention group (41.3% versus 78.9%, p<0.00001). The mobility score at intensive unit care discharge was better in the intervention group (median = 3.5 versus 2, p < 0.0138). There were no statistically significant differences in the invasive mechanical ventilation-free days at day 28 (18 versus 15 days, p<0.49), and neither in the mortality (18.2 versus 27.3%, p<0.167). Conclusion. A multi-component protocol of early active mobility significantly reduces intensive care unit-acquired muscle weakness at the moment of discharge.

Lesiones por presión: la incidencia en el paciente crítico con neumonía por SARS-CoV-2, en respuesta a la estrategia del decúbito prono durante la pandemia COVID-19 / Pressure lesions: incidence in critical patient with pneumonia due to SARS-CoV-2, in response to decubitus prone position during COVID-19 pandemic

Introducción: Se suele aplicar en pacientes con SARS-CoV-2 el decúbito prono (DP) prolongadamente, pues ha demostrado beneficios para solventar la falta de equipos de ventilación mecánica; sin embargo, también tiende a producir lesiones por presión (LPP) en regiones anatómicas no experimentadas en otras prácticas. Objetivo: Calcular la incidencia de LPP en el paciente crítico de COVID-19 en DP, describir características de los pacientes y las lesiones. Metodología: Estudio observacional, descriptivo, de carácter transversal con enfoque retrospectivo. La recolección de datos se realizó en un hospital de tercer nivel de la Ciudad de México, incluyó 230 pacientes que desarrollaron LPP posterior a su ingreso. Se analizó el expediente electrónico y los registros de la clínica de heridas, la recolección de datos se generó en Excel y el análisis estadístico en el programa SPSS. Resultados: La incidencia fue de 18.05%, las LPP con esfacelo corresponden al 33.9% y las de necrosis al 40%. La localización anatómica en pabellón auricular, pómulos y tórax fue de 36.1% y 46.5% fueron lesiones de categoría III con afectación de las estructuras musculares. La correlación con el IMC demostró que pacientes con sobrepeso presentaron mayor incidencia de LPP con fibrina y esfacelo en un 60.3%. Limitación del estudio: No se consideraron variables como la carga de trabajo de enfermería. Originalidad: Esta investigación no ha sido postulada previamente en ningún órgano editorial. Conclusiones: La incidencia coincide con estudios en otros países, por lo que es necesario estandarizar las acciones para la prevención de LPP y reducir su incidencia.

Introduction: Prolonged prone decubitus (PD) is usually applied in patients with SARS­CoV­2, as it has shown benefits to solve the lack of mechanical ventilation equipment; however, it also tends to produce pressure injuries (PI) in anatomical regions not experienced in other practices. Objective: To calculate the incidence of PI in the critical patient of COVID-19 in PD, describe patient characteristics and injuries. Methodology: Observational, descriptive, cross-sectional study with retrospective approach. Data collection was performed in a tertiary level hospital in Mexico City, including 230 patients who developed PI after admission. The electronic file and wound clinic records were analyzed, data collection was generated in Excel and statistical analysis in the SPSSs program. Results: The incidence was 18.05%, PI with slough corresponded to 33.9% and those with necrosis to 40%. The anatomical location in the pinna, cheekbones and thorax was 36.1% and 46.5% were category III lesions with involvement of muscular structures. Correlation with BMI showed that overweight patients had a higher incidence of PI with fibrin and sphacel in 60.3%. Limitation of the study: variables such as nursing workload were not considered. Originality: This research has not been previously postulated in any editorial body. Conclusions: The incidence coincides with studies in other countries, so it is necessary to standardize actions for the prevention of PI and reduce its incidence.

Diferencias según sexo en pacientes ingresados en cuidados intensivos / Differences according to sex in patients admitted to intensive care units i: en

Introducción: Hoy día existen disparidades en cuanto al sexo en pacientes con enfermedades graves, lo cual no ha podido ser explicado en los estudios clínico-epidemiológicos realizados hasta el momento. Objetivo: Identificar las diferencias según sexo en pacientes ingresados en cuidados intensivos. Métodos: Se realizó un estudio observacional y prospectivo de 187 pacientes ingresados en la Unidad de Cuidados Intensivos del Hospital General Provincial Carlos Manuel de Céspedes de la provincia de Granma, que incluyó los meses de noviembre y diciembre de 2018-2020. Entre las variables analizadas figuraron: edad, sexo, origen, diagnóstico al ingreso, estado al egreso, estadía hospitalaria, síndrome de respuesta inflamatoria sistémica, estadio de la sepsis, factores de riesgo, infecciones adquiridas en la comunidad y tratamiento requerido. Resultados: En la investigación la mayoría de los pacientes correspondieron al sexo femenino (60,9 %) y la edad media fue de 31,6 y 49,6 años en mujeres y hombres, respectivamente (p=0,000). Asimismo, existieron diferencias significativas en cuanto al origen (p=0,012) y los diagnósticos iniciales (p=0,018); mientras que el promedio del APACHE II resultó ser de 7,2 en mujeres y de 11,6 en hombres (p=0,000) y la escala para la evaluación de fallo orgánico secuencial tuvo una media de 0,7 y 2,0, en ese mismo orden (p=0,000). Conclusiones: Los pacientes del sexo masculino presentaron edad promedio, diagnóstico, origen, gravedad y disfunción de órganos significativamente diferentes a los del femenino. Si bien no se apreciaron disparidades en cuanto a factores de riesgo e infecciones asociadas a la comunidad, la frecuencia de hombres que requieren tratamiento fue significativamente más alta.

Introduction: Nowadays disparities as for sex in patients with serious diseases can be found, which has not been explained in the clinical-epidemiological studies carried out until the moment. Objective: To identify the differences according to sex in patients admitted to intensive care units. Methods: An observational and prospective study of 187 patients admitted to the Intensive Care Units of Carlos Manuel de Céspedes Provincial General Hospital was carried out in Granma that included the months of November and December, 2018-2020. Among the analyzed variables we can mention: age, sex, origin, diagnosis at admission, state when discharged from the unit, hospital stay, syndrome of systemic inflammatory response, stage of the sepsis, risk factors, community acquired infections and required treatment. Results: In the investigation most of the patients corresponded to female sex (60.9 %) and the mean age was 31.6 and 49.6 years in women and men, respectively (p=0.000). Also, significant differences existed as for the origin (p=0.012) and the initial diagnoses (p=0.018); while the average of the APACHE II was 7.2 in women and 11.6 in men (p=0.000) and the Sequential Organ Failure Assessment Score had a mean of 0.7 and 2.0, in that same order (p=0.000). Conclusions: The patients of male sex presented average age, diagnosis, origin, seriousness and dysfunction of organs significantly different to those of female sex. Although disparities were not appreciated as for risk factors and infections associated with the community, the frequency of men that require treatment was significantly higher.

Ecografía pulmonar en la evaluación del paciente crítico / Lung ultrasound in the evaluation of critically ill patients

Introducción: La ecografía es una técnica de imagen no invasiva que permite explorar diferentes órganos de manera inmediata, constituye un instrumento de alto valor diagnóstico al alcance del profesional de la salud, y es utilizada en todas las especialidades médicas. En los últimos años, la evolución tecnológica ha permitido que los aparatos de ecografía sean más pequeños, portátiles, y con una alta resolución, tal es el caso de la ecografía clínica o ecografía a pie de cama. La ecografía del paciente crítico ha cambiado la práctica médica; específicamente la ecografía pulmonar se debe realizar en todos los pacientes con enfermedad pulmonar aguda. Objetivo: Aportar el conocimiento teórico necesario para promover el uso de la ecografía pulmonar en la evaluación del paciente crítico, y contribuir, mediante su aplicación, a la disminución del riesgo de exposición a las radiografías. Métodos: Se efectuó una revisión de la literatura médica actualizada sobre el papel de la ecografía pulmonar en la evaluación del paciente crítico, en el período de julio a diciembre de 2021. Se utilizaron los siguientes motores de búsqueda: SciELO, Medigraphic y Google Académico. Conclusiones: En el contexto actual, la ecografía pulmonar ha adquirido un papel protagónico, pues su uso facilita una evaluación frecuente y no invasiva del paciente crítico con afección pleuropulmonar. Su aplicación garantiza la disminución del riesgo de exposición a las radiografías.

Introduction: ultrasound is a non-invasive imaging technique that allows us to explore different organs immediately; it constitutes an instrument of high diagnostic value within the reach of health professionals and used in all medical specialties. In recent years, technological evolution has allowed ultrasound devices to be smaller, portable and with high resolution, such is the case of clinical ultrasound or bedside ultrasound. Bedside ultrasound in critically ill patients has changed medical practice; specifically, lung ultrasound should be performed in all patients with acute lung disease. Objective: to provide the necessary theoretical knowledge in order to promote the use of lung ultrasound in the evaluation of critically ill patients, as well as to contribute, through its application, to reduce the risk of exposure to radiographs. Methods: a review of the updated medical literature on the role of lung ultrasound in the evaluation of the critically ill patients was performed from July to December 2021. SciELO, Medigraphic and Google Scholar were the search engines used. Conclusions: lung ultrasound has acquired a leading role in the current context, since its use facilitates a non-invasive and common evaluation of the criticall ill patients with pleuropulmonary disease. Its application guarantees the reduction of the risk of exposure to X-rays.

Cánula nasal de alto flujo en pacientes críticos: una revisión narrativa / High Flow Nasal Cannula in Critically Ill Patients: a Narrative Review

La cánula nasal de alto flujo se ha convertido en una de las principales estrategias de soporte ventilatorio no invasivo en la insuficiencia respiratoria aguda hipoxémica, principalmente después de la pandemia de COVID-19. Sin embargo, su uso se extiende más allá de este escenario y abarca diferentes condiciones clínicas como el período postextubación, período postquirúrgico, insuficiencia respiratoria hipercápnica y soporte vital en pacientes inmunodeprimidos, trasplantados u oncológicos. Los manuscritos que avalan su aplicación han sido ampliamente difundidos y el grado de evidencia es lo suficientemente alto como para recomendar su uso. Por tanto, es necesario destacar sus efectos fisiológicos como el confort, una fracción inspirada de oxígeno precisa, el lavado de CO2 o la optimización del volumen pulmonar de fin de espiración para comprender su mecanismo de acción y mejorar los resultados de los pacientes. El objetivo de esta revisión narrativa es ofrecer un resumen breve y conciso de los efectos y beneficios de aplicar esta terapia en diferentes escenarios clínicos sin la estructura rígida de una revisión sistemática. Con base en estas líneas, el lector curioso puede ampliar la evidencia científica que avala el empleo de la cánula nasal de alto flujo en cada escenario particular. (AU);

High-flow nasal cannula has become one of the main strategies for non-invasive ventilatory support in hypoxemic acute respiratory failure, mainly after the COVID-19 pandemic. However, its use extends beyond this scenario and covers different clinical conditions such as the post-extubation period, post-surgical period, hypercapnic respiratory failure and life support in immunosuppressed, trasplant or cancer patients. Manuscripts that support its application have been widely disseminated and the degree of evidence is high enough to recommend its use. Therefore, it is necessary to highlight its physiological effects such as comfort, precise fraction of inspiratory oxygen, CO2 lavage or optimize end-expiratory lung volume to understand its mechanism of action and improve patients' outcomes. The objective of this narrative review is to offer a brief and concise summary of the benefits of applying this therapy in different clinical scenarios without the rigid structure of a systematic review. Based on these lines, the curious reader can expand the scientific evidence that supports the use of the high-flow nasal cannula in each particular scenario. (AU);

Tradução, validação e adaptação transcultural da Frommelt Attitude Toward Care of the Dying Scale Form B para o português brasileiro / Translation, validation and cross-cultural adaptation of the Frommelt Attitude Toward Care of the Dying Scale Form B into Brazilian Portuguese

Resumo: Trata-se de um estudo metodológico, com o objetivo de traduzir e adaptar transculturalmente a Frommelt Attitude Toward Care of the Dying Scale Form B (FATCOD-B scale) para o português brasileiro e avaliar sua validade de conteúdo e a consistência interna. Essa escala favorece a eficácia da assistência prestada pela equipe de saúde na temática da morte. Foi projetada pela enfermeira Katherine Helen Murray Frommelt em 1989, com o objetivo de avaliar as atitudes dos enfermeiros em relação ao cuidado de pessoas em estado terminal e suas famílias. Posteriormente, sua aplicação foi estendida para outros profissionais, como médicos. Este estudo foi aprovado pelo Comitê de Ética em Pesquisa em Seres Humanos do Setor de Ciências da Saúde da Universidade Federal do Paraná com a CAEE 55547522.1.0000.0102. Foi desenvolvido entre julho de 2021 a janeiro de 2023, no formato online e envolveu as etapas: tradução; síntese; retrotradução; revisão por um comitê de especialistas; pré-teste e versão final da escala. Foram recrutados como participantes: tradutores juramentados; tradutor da área da saúde; retrotradutores norte-americanos; especialistas, dentre os quais médicos, enfermeiros, profissional formado em letras português-inglês e profissionais médicos e enfermeiros associados à Sociedade Brasileira de Geriatria e Gerontologia que participaram do pré-teste. Todos foram selecionados mediante critérios de inclusão e exclusão. A versão da FATCOD-B scale finalizada pelos especialistas, foi aplicada no pré-teste a 75 médicos e 12 enfermeiros, que também responderam a um questionário sociodemográfico que continha perguntas referentes a sexo, idade, religião, profissão, educação prévia sobre o morrer e a morte, experiência prévia com a perda, experiência presente com a perda e experiência prévia no cuidado de pessoas com doenças terminais. Para avaliar as associações entre as respostas da FATCOD-B scale foi utilizado o teste qui-quadrado ou o teste exato de Fisher. Todos os testes foram realizados considerando o nível de 5% de significância e utilizou-se a linguagem de programação R.4.1.2. Dos 87 participantes, 57,4% tinham até 45 anos; 66,7% eram mulheres; 55,2% eram católicos; 73,6% apontaram a crença religiosa como geradora de atitudes sobre o morrer e a morte; 96,6% tinham experiência prévia no cuidado de pessoas com doenças terminais, 72,43% experienciaram a perda de familiares próximos ou outra pessoa significante, 65,5% não fizaram curso específico sobre o morrer e a morte, mas tiveram o assunto abordado em outros cursos. Observou-se que as variáveis idade, sexo, religião, experiência prévia com a perda e a educação prévia sobre o morrer e a morte são fatores associados às atitudes diante do morrer e da morte (p<0,05). Os participantes apresentaram atitudes positivas diante do morrer e da morte, pontuando 121 ± 0,68 na escala FATCOD-B. O Alfa de Cronbach atingiu 0,81 e o Índice de Validade de Conteúdo 88,27 os quais foram empregados para avaliar a consistência interna da versão final da FATCOD-B scale, obtendo-se valor adequado. A versão brasileira da FATCOD-B scale (FATCOD-B-B), traduzida e adaptada transculturalmente para o português brasileiro através de processos científicos rigorosos, apresentou validade de conteúdo e alta consistência interna, logo poderá ser aplicada em todo território nacional.

Abstract: This is a methodological study, with the objective of performing the translation and crosscultural adaptation of the Frommelt Attitude Toward Care of the Dying Scale Form B (FATCOD-B scale) into Brazilian Portuguese and the evaluation of its content validity and internal consistency. This scale is a measurement instrument, which favors the effectiveness of the assistance provided by the health team on the theme of death. It was designed by the nurse Katherine Helen Murray Frommelt in 1989, with the objective of evaluating the attitudes of nurses in relation to the care of terminally ill people and their families. Later, its application was extended to other healthcare professionals, such as physicians. This study was approved by the Ethics Committee on Human Research of the Health Sciences Sector of the Federal University of Paraná with CAEE 55547522.1.0000.0102. It was developed between July 2021 and January 2023, in the online format and involved the following stages: translation; synthesis; back translation; review by a committee of experts; pre-test and final version of the scale. The study participants were recruited as: translators sworn; a translator in the health area; North American back-translators; specialists, among which there are physicians, nurses and a professional graduated in Portuguese-English letters and physicians and nurses associated with the Brazilian Society of Geriatrics and Gerontology who participated in the pre-test. All participants were selected through pre-established inclusion and exclusion criteria. The version of the FATCOD-B scale finalized by the specialists was applied in the pre-test to 75 physicians and 12 nurses, who also answered a sociodemographic questionnaire that contained questions regarding sex, age, religion, profession, previous education about dying and death, previous experience with the loss, present experience with the loss and previous experience in caring for people with terminal illnesses. To evaluate the associations between the answers of the FATCOD-B scale, it was used the chi-square test or Fisher's exact test. All tests were performed considering a 5% significance level and using the R.4.1.2 programming language. From the 87 participants, 57.4% were up to 45 years old; 66.7% were women; 55.2% were catholic; 73.6% pointed to religious belief as a generator of attitudes about dying and death; 96.6% had previous experience in caring for people with terminal illnesses, 72.43% had experienced the loss of close family members or another significant person, 65.5% had not taken a specific course on dying and death, but had the subject approached in other courses. It was observed that the variables age, gender, religion, previous experience with loss and previous education about dying and death are influential in the attitudes towards dying and death (p<0.05). Participants showed positive attitudes towards dying and death, scoring 121 ± 0.68 on the FATCOD-B scale. Cronbach's alpha reached 0.81 and the Content Validity Index 88.27, wich were used to assess the reliability and internal consistency of the final version of the FATCOD-B scale, obtaining adequate values. The Brazilian version of the FATCOD-B scale, translated and cross-culturally adapted through rigorous scientific processes, showed content validity and high internal consistency, and could soon be applied throughout the country.

Effect of seasons on delirium in postoperative critically ill patients: a retrospective analysis

Abstract Background and objectives Postoperative delirium is common in critically ill patients and is known to have several predisposing and precipitating factors. Seasonality affects cognitive function which has a more dysfunctional pattern during winter. We, therefore, aimed to test whether seasonal variation is associated with the occurrence of delirium and hospital Length Of Stay (LOS) in critically ill non-cardiac surgical populations. Methods We conducted a retrospective analysis of adult patients recovering from non-cardiac surgery at the Cleveland Clinic between March 2013 and March 2018 who stayed in Surgical Intensive Care Unit (SICU) for at least 48 hours and had daily Confusion Assessment Method Intensive Care Unit (CAM-ICU) assessments for delirium. The incidence of delirium and LOS were summarized by season and compared using chi-square test and non-parametric tests, respectively. A logistic regression model was used to assess the association between delirium and LOS with seasons, adjusted for potential confounding variables. Results Among 2300 patients admitted to SICU after non-cardiac surgeries, 1267 (55%) had postoperative delirium. The incidence of delirium was 55% in spring, 54% in summer, 55% in fall and 57% in winter, which was not significantly different over the four seasons (p= 0.69). The median LOS was 12 days (IQR = [8, 19]) overall. There was a significant difference in LOS across the four seasons (p= 0.018). LOS during summer was 12% longer (95% CI: 1.04, 1.21; p= 0.002) than in winter. Conclusions In adult non-cardiac critically ill surgical patients, the incidence of postoperative delirium is not associated with season. Noticeably, LOS was longer in summer than in winter.

Monitorización hemodinámica integrada: clínica, gasométrica y ecocardiográfica / Integrated hemodynamic monitoring: clinical, gasometric and echocardiographic / Monitorização hemodinâmica integrada: clínica, gasométrica e ecocardiográfica

Introducción: la monitorización hemodinámica constituye un conjunto de técnicas y parámetros que permiten valo rar si la función cardiovascular es la adecuada para mantener la perfusión y la oxigenación tisular que permita sa tisfacer las demandas metabólicas del organismo, valorar el estado y el comportamiento del sistema cardiovascular, orientando sobre la mejor estrategia terapéutica. La presente revisión busca proporcionar una descripción general e integrada de las diferentes técnicas de monitorización, así como aspectos fisiológicos relevantes para su entendi miento y empleo terapéutico. La monitorización hemodinámica acompañada de un adecuado conocimiento de la fisiología cardiovascular permite determinar el estado del sistema cardiovascular, la condición hemodinámica del paciente y la estrategia terapéutica requerida. Su interpretación debe partir de la integración y la correlación de diversos parámetros hemodinámicos.

Introduction: hemodynamic monitoring is a set of techniques and parameters that allow evaluating whether cardio vascular function is adequate to maintain tissue perfusion and oxygenation to satisfy metabolic demands of the or ganism, assess the condition and behavior of the cardiovascular system, providing guidance on the best therapeutic strategy. This review seeks to provide a general and integrated description of the different monitoring techniques, as well as physiological aspects relevant to their understanding and therapeutic use. Hemodynamic monitoring accompanied by an adequate knowledge of cardiovascular physiology allows to determine the state of the cardiovascular system, hemodynamic condition of the patient and therapeutic strategy required, its interpretation must start from the integration and correlation of different hemodynamic parameters.

Introdução: a monitorização hemodinâmica constitui um conjunto de técnicas e parâmetros que permitem avaliar se a função cardiovascular é adequada para manter a perfusão e oxigenação tecidual que permite satisfazer as exi gências metabólicas do organismo, avaliar o estado e comportamento do sistema cardiovascular, orientando sobre a melhor estratégia terapêutica. Esta revisão procura fornecer uma descrição geral e integrada das diferentes técnicas de monitorização, bem como aspectos fisiológicos relevantes para a sua compreensão e utilização terapêutica. A monitorização hemodinâmica acompanhada de um conhecimento adequado da fisiologia cardiovascular permite determinar o estado do sistema cardiovascular, a condição hemodinâmica do doente e a estratégia terapêutica neces sária, a sua interpretação deve partir da integração e correlação de vários parâmetros hemodinâmicos.

Impacto do uso de imunonutrientes no desfecho clínico de pacientes críticos: uma revisão sistemática de estudos clínicos / Impact of immunonutrient use on clinical out comes in critical patients: a systematic review of clinical trials

Objetivo: Descrever os resultados da influência de imunonutrientes na taxa de mortalidade, tempo de internação, tempo de permanência na Unidade de Terapia Intensiva (UTI) e incidência de infecções em pacientes críticos adultos e idosos. Método: Revisão integrativa da literatura realizada nas bases de dados PubMed, LILACS, SciELO, Medline e Google Scholar, usando os descritores: ("immunomodulation" OR "immunonutrients") AND ("fattyAcids, Omega-3" OR "eicosapentaenoic Acid") AND ("glutamine") AND ("criticalillness" OR "criticalillnesses" OR "criticallyill"), sem restrição de idioma, com pesquisas realizadas no período de 2012 a 2022. Resultados: Nas buscas realizadas, foram encontradas 15 publicações, das quais 11 atenderam a todos os critérios estabelecidos ao início do estudo. Apesar de alguns estudos com indivíduos suplementados com fórmulas imunomoduladoras demonstrarem melhora no tempo de internação de UTI, redução de ocorrência de sepse e choque séptico, e redução de taxa de infecções, em sua maioria os estudos avaliados não mostraram diferença entre os grupos suplementados e os grupos controle, ou não apresentaram resultados estatisticamente significativos. Conclusão: O manejo do cuidado em pacientes críticos deve ser cuidadoso e individualizado, sendo imprescindível que a conduta clínica tenha como base evidências científicas. No presente estudo, a análise dos estudos clínicos que compuseram esta pesquisa verificou que os efeitos da imunomodulação na mortalidade, tempo de internação na UTI e hospitalização total e incidência de infecções, demonstrou ausência de resultados significativos para a prática de uso de imunonutrientes em pacientes críticos, sendo necessário realizar outros estudos para comprovar os reais benefícios da adoção dessa conduta.

Objective: To describe the outcomes regarding the impact of immunonutrients on mortality rates, length of hospitalization, duration of Intensive Care Unit (ICU) stays, and the incidence of infections in adult and elderly critical patients. Method: An integrative literature review was conducted using the PubMed, LILACS, SciELO, Medline, and Google Scholar databases, using the descriptors: ("immunomodulation" OR "immunonutrients") AND ("fatty acids, Omega-3" OR "eicosapentaenoic Acid") AND ("glutamine") AND ("critical illness" OR "critical illnesses" OR "critically ill"), without language restrictions. The search encompassed studies that were published between 2012 and 2022. Results: Fifteen publications were identified in the conducted searches, of which eleven met all the established criteria at the outset of the study. Although some studies involving individuals supplemented with immunomodulatory formulas demonstrated improvements in ICU leng­th of stay, a reduced incidence of sepsis and septic shock, and a lower infection rate, most of the evaluated studies did not reveal significant differences between the supplemented groups and the control groups or did not yield statistically significant outcomes. Conclusion: The management of care for critical patients necessitates a cautious and individualized approach, underpinned by scientific evidence. The analysis of clinical studies forming part of this research revealed an absence of statistically significant  results pertaining to the practice of immunomodulation  utilization in critical patients with respect to effects on mortality, ICU length of stay, total hospitalization, and the incidence of infections. Further studies are required to validate the genuine benefits of adopting this approach.

Comparison of diagnostic criteria for acute kidney injury in critically ill children / 中华儿科杂志

Objective: The kidney disease: improving global outcome (KDIGO) and pediatric reference change value optimized for acute kidney injury (pROCK) criteria were used to evaluate the incidence, stages and mortality of acute kidney injury (AKI). The differences between the 2 criteria were compared for exploring the value of pROCK criteria in diagnosing pediatric AKI and predicting adverse outcomes. Methods: In the multicenter prospective clinical cohort study, we collected general data and clinical data such as serum creatinine values from 1 120 children admitted to 4 PICUs of Children's Hospital of Soochow University, Children's Hospital of Fudan University, Anhui Provincial Children's Hospital, and Xuzhou Children's Hospital from September 2019 to February 2021. AKI was defined and staged according to the KDIGO and pROCK criteria. The incidence of AKI, the consistency of AKI definite diagnosis and stages, and the mortality in PICU were compared between the 2 groups. The chi-square test or Fisher's exact test was applied for comparison between 2 groups. The Cohen's Kappa and Weighted Kappa analyses were used for evaluating diagnostic consistency. The Cox regression analysis was used to evaluate the correlation between AKI and mortality. Results: A total of 1 120 critically ill children were included, with an age of 33 (10, 84) months. There are 668 boys and 452 girls. The incidence of AKI defined by the KDIGO guideline was higher than that defined by pROCK criteria (27.2%(305/1 120), 14.7%(165/1 120), χ2=52.78, P<0.001). The concordance rates of the 2 criteria for the diagnosis of AKI and AKI staging were 87.0% (κ=0.62) and 79.7% (κ=0.58), respectively. Totally 63 infants with AKI stage 1 defined by the KDIGO guideline were redefined as non-AKI by following the pROCK criteria. The PICU mortality rate of these infants was similar to patients without AKI defined by KDIGO guideline(P=0.761). After adjusting for confounders, AKI defined by KDIGO or pROCK criteria was an independent risk factor of death in PICU (AHR=2.04, 2.73,95%CI 1.27-3.29, 1.74-4.28, both P<0.01), and the risk of death was higher when using the pROCK compared with the KDIGO criteria. As for the KDIGO criteria, mild AKI was not associated with the mortality in PICU (P=0.702), while severe AKI was associated with increased mortality (P<0.001). As for the pROCK criteria, both mild and severe AKI were risk factors of PICU death in children (HR=3.51, 6.70, 95%CI 1.94-6.34, 4.30-10.44, both P<0.001). In addition, The AKI severity was positively associated with the mortality. Conclusions: The AKI incidence and staging varied depending on the used diagnostic criteria. The KDIGO definition is more sensitive, while the pROCK-defined AKI is more strongly associated with high mortality rate.

Clinical and imaging analysis of neurological complications in critically ill children infected with SARS-CoV-2 Omicron / 中华危重病急救医学

OBJECTIVE@#To summarize clinical predictors and imaging characteristics of critically ill children infected with SARS-CoV-2 Omicron with neurological complications in Shenzhen during the peak of the first round of infections.@*METHODS@#The clinical data of 11 critically ill children with neurological complications infected with SARS-CoV-2 Omicron in Shenzhen Children's Hospital from December 12 to 31, 2022, were retrospectively collected and analyzed. Laboratory test results related to liver parenchymal injury, histiocytic injury, inflammation, and coagulation function were collected, and imaging characteristics including CT and/or magnetic resonance imaging (MRI) were analyzed. The differences in CT/MRI score, acute necrotizing encephalopathy severity scale (ANE-SS) score and total score (CT/MRI score + ANE-SS score) were compared between the two groups with different prognosis during hospitation.@*RESULTS@#Among 11 children, 7 were male and 4 were female. The age ranged from 10 months to 16 years. There were 5 cases of acute necrotizing encephalopathy (ANE) and 6 cases of acute fulminant cerebral edema (AFCE). During hospitalization, 3 patients survived and 8 patients died of multiple organ dysfunction syndrome (MODS), including 2 cases of ANE and 6 cases of AFCE. All cases had fever (> 38.5 centigrade), and 3 cases had ultra-high fever (> 41 centigrade). Within 48 hours of onset, all cases had disorders of consciousness and 9 cases had seizures. The 8 dead children had complications with multisystem involvement, including shock, respiratory failure, disseminated intravascular coagulation (DIC), liver failure, renal failure or myocardial damage, and the laboratory predictors related to hepatocellular injury [alanine aminotransferase (ALT), aspartate aminotransferase (AST)], histocyte injury [creatine kinase (CK), lactate dehydrogenase (LDH)], inflammation [procalcitonin (PCT), interleukin-6 (IL-6), serum ferritin (SF)], coagulation function (D-dimer) and blood glucose (Glu) increased in different quantities, of which PCT was specifically increased in 6 cases with AFCE, PLT was specifically decreased in 3 cases with AFCE, and ALT and LDH were significantly increased in 2 cases with ANE. Imaging analysis showed subarachnoid hemorrhage, basal ganglia and thalamus lesions in all 6 cases with AFCE, while thalamus lesions in all 5 cases with ANE. The ANE-SS score of 8 deceased children ranged from 2 to 7 (of which 6 cases were ≥ 5), and the ANE-SS score of 3 surviving children ranged from 0 to 2. Eight dead children had a CT/MRI score of 1-4 (of which 6 cases were 4), and 3 surviving children had a CT/MRI score of 1-2 (of which 2 cases were 1). The total score of 8 deceased children was 6-10 (of which 6 cases ≥ 8), and 3 surviving children was 1-4.@*CONCLUSIONS@#The neurological complications of critically ill children infected with SARS-CoV-2 Omicron in Shenzhen progressed rapidly to ANE and AFCE, with high mortality. High fever (> 40 centigrade), convulsion/disturbance of consciousness, and multiple organ failure were the most common symptoms in ANE and AFCE cases. PCT increased and PLT decreased specifically in AFCE cases. Poor prognosis (death) was more common in age < 4 years old, predictors of ALT, AST, CK, LDH, PCT, D-dimer, Glu, IL-6 increased significantly, PLT decreased significantly. The common imaging feature of ANE and AFCE is the involvement of dorsal thalamus, a new imaging sign of AFCE (subarachnoid hemorrhage) was found. The higher the ANE-SS score, CT/MRI score and total score, the greater the risk of death.

Related factors of viral nucleic acid change in critically ill patients with SARS-CoV-2 infection after treatment with Nirmatrelvir/Ritonavir: a single center retrospective cohort study / 中华危重病急救医学

OBJECTIVE@#To describe negative conversion and rebound of patients with severe and critical acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection after treatment with Nirmatrelvir/Ritonavir, and to analyze related factors associating with failure of SARS-CoV-2 negative conversion and relapse and prognosis.@*METHODS@#A single center retrospective cohort study was conducted. Patients aged ≥ 16 years old who were diagnosed with severe or critical SARS-CoV-2 infection and took Nirmatrelvir/Ritonavir for 5 days in Peking University First Hospital from December 7, 2022 to January 27, 2023, were included. General characteristics and clinical data were collected from electronic medical record system. The Kaplan-Meier curve of SARS-CoV-2 negative conversion was drawn. Factors with P < 0.10 were incorporated into multivariate Logistic regression model to analyze the relationship between the factors and persistent nucleic acid positive and rebound.@*RESULTS@#A total of 31 severe and 37 critical SARS-CoV-2 infection patients were included. The median duration from initiation of Nirmatrelvir/Ritonavir to negative conversion of SARS-CoV-2 for both was 6.0 days, and the negative conversion rate on day 15 was 93.5% and 86.5%, respectively. SARS-CoV-2 rebound was observed in 7 patients (11.3%), among whom were 1 severe patient and 6 critical patients. The above 7 patients with SARS-CoV-2 rebound and 6 patients with failure of SARS-CoV-2 negative conversion were compared with 55 patients with persistent negative conversion. Factors with P < 0.10, including the lowest lymphocyte count (LYM), the highest D-dimer, the highest procalcitonin (PCT), the lowest Ct value, cardiovascular diseases other than hypertension and coronary heart disease, were incorporated into multivariate Logistic regression analysis. The decreased LYM [odds ratio (OR) = 0.146, 95% confidence interval (95%CI) was 0.031-0.689, P = 0.015] and the increased PCT (OR = 2.008, 95%CI was 1.042-3.868, P = 0.037) were revealed to be independent risk factors of the failure of SARS-CoV-2 negative conversion or rebound. The proportion of mechanical ventilation and invasive ventilation were significantly higher in patients with persistent SARS-CoV-2 infection or rebound than those in patients with SARS-CoV-2 negative conversion (84.6% vs. 38.2%, 69.2% vs. 25.5%, both P < 0.01), but no significant difference in mechanical ventilation and invasive ventilation duration was observed. Compared with the patients with SARS-CoV-2 negative conversion, more patients with persistent SARS-CoV-2 infection or rebound were admitted to intensive care unit (ICU, 76.9% vs. 50.9%), and length of ICU stay in patients with persistent SARS-CoV-2 infection or rebound tended to be longer [days: 13.0 (10.3, 24.3) vs. 11.0 (5.3, 23.0), P > 0.05].@*CONCLUSIONS@#The decreased LYM and increased PCT are independent risk factors for the failure of SARS-CoV-2 negative conversion or rebound in patients with severe and critical SARS-CoV-2 infection. Attention should be paid to these patients for their poor prognosis.

Stress hyperglycemia and nutritional therapy / 中华危重病急救医学

Stress induced hyperglycemia is the body's protect response against strong (patho-physiological and/or psychological) stress, sometimes the blood glucose level is too high due to out of the body's adjustment. Renal glucose threshold (about 9 mmol/L) is a window of glucose leak from capillary to interstitial tissue. It is important to keep blood glucose level < 9 mmol/L, for reducing vascular sclerosis as well as organs hypoperfusion, meanwhile pay attention to preventing more dangerous hypoglycemia. Glucose, as the main energy substrate, should be daily supply and its metabolism should be monitored. We used to talk "nutritional support". Support is conform the physiological ability of host, but therapy is to coordinate and change pathophysiology. So, nutritional support is not equal to nutritional therapy. For critical ill patients, we need to emphasize "nutritional therapy", i.e, do not give nutritional treatment without metabolic monitoring, make up for deficiencies and avoid metabolites overloading, rational adjustment to protect and coordinate organs function.