Comparison of clinical characteristics and outcomes of infants with moderate and severe acute respiratory distress syndrome diagnosed according to baseline oxygenation index / 中国小儿急救医学

Objective:To analyze the difference of clinical characteristics and outcomes of infants with moderate and severe pediatric acute respiratory distress syndrome(PARDS)diagnosed according to baseline oxygenation index(OI) in pediatric intensive care unit(PICU).Methods:Second analysis of the data collected from the "Efficacy of pulmonary surfactant (PS) in the treatment of children with moderate and severe ARDS" program.Retrospectively compare of the differences in clinical data such as general condition, underlying diseases, OI, mechanical ventilation, PS administration and outcomes among infants with moderate and severe PARDS divided by baseline OI who admitted to PICUs at 14 participating tertiary hospitals from 2016 to December 2021.Results:Among the 101 cases, 55 cases (54.5%) were moderate and 46 cases (45.5%) were severe PARDS.The proportion of male in the severe group (50.0% vs.72.7%, P=0.019) and the pediatric critical illness score(PCIS)[72 (68, 78) vs.76 (70, 80), P=0.019] were significantly lower than those in the moderate group, while there was no significant difference regarding age, body weight, etiology of PARDS and underlying diseases.The utilization rate of high-frequency ventilator in the severe group was significantly higher than that in the moderate group (34.8% vs.10.9%, P=0.004), but there was no significant difference in PS use, fluid load and pulmonary complications.The 24 h OI improvement (0.26±0.33 vs.0.04±0.34, P=0.001) and the 72 h OI improvement[0.34 (-0.04, 0.62) vs.0.15 (-0.14, 0.42), P=0.029)]in the severe group were significantly better than those in the moderate group, but there was no significant difference regarding mortality, length of hospital stay and intubation duration after diagnosis of PARDS between the two groups. Conclusion:In moderate and severe(divided by baseline OI) PARDS infants with invasive mechanical ventilation, children in severe group have better oxygenation improvement in the early stage after PARDS identified and are more likely to receive high frequency ventilation compared to those in moderate group.Baseline OI can not sensitively distinguish the outcomes and is not an ideal index for PARDS grading of this kind of patient.

Survey on status quo of reception of pediatric patients by general practitioners in Longhua District of Shenzhen / 中华全科医师杂志

Objective:To investigate the status quo and related issues of reception of pediatric patients by general practitioners in community health centers in Longhua District of Shenzhen through qualitative and quantitative studies.Methods:In qualitative study, 10 general practitioners (GPs) from community health centers in Longhua District of Shenzhen were selected by the purpose sampling method for personal in-depth interviews. The interview contents were recorded and transcribed, then coded by Nvivo software. Theme frame analysis method was used for data sorting and theme extraction. Based on the results of qualitative interviews, the questionnaire was developed and distributed through the electronic questionnaire platform. The contents of the questionnaire included general information, the situation of pediatric patient reception in community health centers, the willingness and ability of GPs to receive children, the existing problems and the measures to promote receiving pediatric patients in community health centers.Results:The results of personal in-depth interviews with 10 GPs showed that the obtained information reached saturation. Through repeated reading, induction and analysis of the interview data, four themes were extracted: ① GPs in community health centers received a large number of pediatric outpatients with common diseases; ② GPs in community health centers are willing to receive child patients, but they were lack of ability; ③ there were many problems of pediatric patients reception in community health centers; ④ training and incentive policies would help to promote child patient reception in community health centers. A total of 223 electronic questionnaires were collected, 219 of which were valid for analysis. All the community health centers in Longhua District received pediatric patients, the number accounted for 20%-60% of the total outpatients; 84.5%(185/219)of the responders were willing to receive child patients, 65.8% (144/219)of them assumed that the consulting ability was average. The main problems for GPs to receive pediatric patients were "insufficient training" (76.7%,168/219) and "lack of consulting ability" (55.3%,121/219). The important measures to promote GPs to receive child patients were to improve their own clinical competence (94.1%,206/219), to have clinical faculty with pediatric background mentoring at the community health center (74.9%,164/219), to improve the supporting facilities (42.9%,94/219) and continuous professional support (38.8%,85/219).Conclusion:The status quo of pediatric patient reception in the community of Shenzhen Longhua District is generally satisfactory. The main problems in this aspect are insufficient training for general practitioners and lack of clinical competence, which should be strengthened and improved in the future.

Analysis of risk factors of extrapulmonary organ dysfunction in children with severe refractory mycoplasma pneumoniae pneumonia / 中华急诊医学杂志

Objective:To analyze the clinical features of severe refractory mycoplasma pneumoniae pneumonia (SRMPP) in children, and explore its risk factors complicated with extrapulmonary organ dysfunction.Methods:The clinical data of children with SRMPP who were admitted to the Department of Critical Care Medicine of Shanghai Children's Hospital from July 2017 to June 2019 were retrospectively summarized. The patients were divided into two groups according to the occurrence of extrapulmonary organ dysfunction: the extrapulmonary organ dysfunction group and the respiratory dysfunction group. The differences of clinical features and laboratory indexes between the two groups were compared, and the risk factors of extrapulmonary organ dysfunction were screened out by logistic regression analysis.Results:A total of 107 cases with SRMPP were admitted to the Pediatric Intensive Care Unit during the past two years, and there were 44 cases (41.1%) complicated with pleural effusion, 17 cases (15.9%) with plastic bronchitis, 104 cases (97.2%) with positive results for macrolide resistance genes (2063, 2064), with an in-hospital mortality rate of 2.8% (3/107). Among 107 children with SRMPP, there were 51 cases (47.7%) with extrapulmonary organ dysfunction, 43 cases (40.2%) with cardiovascular dysfunction, 13 cases (12.1%) with coagulation dysfunction, 11 cases (10.3%) with gastrointestinal dysfunction, 4 cases (3.7%) with renal dysfunction, 4 cases (3.7%) with brain dysfunction, 3 cases (2.8%) with liver dysfunction, and 16 cases (15.0%) with multiple organ dysfunction. Compared with the respiratory dysfunction group, the incidence of capillary leak syndrome was higher (52.9% vs. 17.9%, P < 0.001), the capillary leak index was increased [11.71 (4.63, 27.07) vs. 5.78 (2.07, 15.71), P =0.019], serum albumin was decreased [(32.2 ± 5.6)g/L vs. (34.7 ± 6.7)g/L, P=0. 041], and prothrombin time was prolonged significantly [12.7 (11.7, 13.8)s vs. 12.0 (11.4, 13.0)s, P=0. 009]. Logistic regression analysis showed that capillary leak syndrome ( OR=0. 278, 95% CI 0.102-0.759, P=0. 013) and prolonged prothrombin time ( OR=1. 443, 95% CI 1.018-2.046, P=0. 039) were independent risk factors for SRMPP complicated with extrapulmonary organ dysfunction. Conclusions:Approximately 50% of children with SRMPP have dysfunction of extrapulmonary organs, such as circulation, coagulation and gastrointestinal disorders. Capillary leak syndrome and prolonged prothrombin time are independent risk factors for SRMPP complicated with extrapulmonary organ dysfunction.

Clinical characteristics and prognostic analysis of children with acute pancreatitis in the pediatric intensive care unit / 中国小儿急救医学

Objective:To investigate the clinical characteristics and prognosis of children with acute pancreatitis(AP)admitted to the pediatric intensive care unit(PICU).Methods:The etiology, clinical data, imaging features, complications, and outcomes of children with AP admitted to PICU at Shanghai Children′s Hospital from July 2016 to June 2021 were retrospectively analyzed.Results:Totally, 47 patients with AP including 24 males and 23 females were enrolled.The mean age was 84(48, 144)months.Four patients with mild AP, 5 patients with moderately severe AP(MSAP)and 38 cases with severe AP(SAP)were diagnosed.The main etiology was drug-related pancreatitis in 23 cases(48.9%). The organ dysfunction mainly included shock in 28 cases(59.6%), acute respiratory failure in 21 cases(44.7%), gastrointestinal disorders in 30 cases(63.8%), and coagulopathy in 29 cases(61.7%). The complications included capillary leakage syndrome in 18 cases(38.3%)and hyperglycemia(>8 mmol/L)in 24 cases(51.1%). Serum amylase and lipase levels were increased in 47 cases(100%). There were significant differences in blood lactate[3.0(2.1, 4.5)mmol/L vs.1.6(1.1, 3.1)mmol/L, P=0.013], and the use of vasoactive drugs[15.0(0, 75.0)vs.0(0, 8.8), P=0.035] between drug-induced pancreatitis and non-drug-induced pancreatitis.All the patients′conditions were improved after treatment and transferred out of PICU. Conclusion:The etiology of acute pancreatitis in children is mainly drug-related, and the main organ dysfunction includes shock, acute respiratory failure, gastrointestinal dysfunction and coagulation dysfunction.The prognosis of childhood pancreatitis is good.

Status survey on pediatric emergency in secondary and tertiary public hospitals in Shanghai city / 中国小儿急救医学

Objective:To understand the current situations and existing problems of pediatric emergency in Shanghai city and provide a basis for the construction and management of pediatric emergency.Methods:The questionnaire survey was used to investigate the current situations of pediatric emergency department in secondary and tertiary public hospitals in Shanghai city.Results:A total of 28 questionnaires were delivered, and 28 were responded.Six of the 28 hospitals had no administratively independent pediatric emergency or no separate pediatric emergency area.Of the 22 hospitals, each had an average of 9.7 professional emergency pediatricians, with the exception of one secondary hospital that lacked professional emergency pediatricians.Professional emergency pediatricians accounted for an average of 70.0% of all pediatricians.Of the 22 hospitals, 18(81.8%) were open 24 hours a day.Fourteen(63.6%) had independent triage.Eight children′s emergency rooms(36.4%) were shared with adults.Among the 22 hospitals, 20 hospitals filled in the annual total number of pediatric emergency visits, and the total number of pediatric emergency visits ranged from 2 791 to 467 428, with an average of 93 966.65.Conclusion:There are still some problems in the development of pediatric emergency department in secondary and tertiary public hospitals in Shanghai city, such as insufficient human resources, substandard personnel training, incomplete equipment and lack of critical first-aid techniques.Therefore, the construction and management of pediatric emergency department still need to be improved.

Novel biomarkers of sepsis-associated acute respiratory distress syndrome / 中国小儿急救医学

Acute respiratory distress syndrome(ARDS)is one of the most common complications of sepsis, resulting in the high risk of death in patients with sepsis.By comparison with non-septic ARDS, sepsis-associated ARDS is characterized by high morbidity, heterogeneity and mortality.It is vital to early identify the occurrence of ARDS, accurately assess the severity, as well as effectively implement the individualized treatment.Based on the genome-wide association study, mass cytometry, and multiple omics data analysis, the molecular signatures of sepsis-associated ARDS have been elucidated, which were related to genetic susceptibility, inflammatory reaction pathway, and metabolic characteristics.The development of novel biomarkers is helpful to molecular classifier, risk stratification, early recognition and assessing severity, implement early intervention, then improving the prognosis.

Classification and clinical roles of immune related-biomarkers in sepsis / 中国小儿急救医学

Biomarkers of sepsis play critical roles in diagnosis, early recognition of organ dysfunction, risk stratification, prognostication, and therapeutic strategy.The dysregulated inflammatory response is reflected drastic changes in pathogen-associated molecular patterns and damage-associated molecular patterns, presented the changes of gene expression and epigenetic modification, metabolic reprogramming and immune dysfunction of immune cells.Sepsis is classified into hyperinflammatory phenotype and immunosuppression phenotype.Biomarker exploration is also conductive to understand the heterogeneity of sepsis and developing the individualized treatment strategies.This issue focused on novel immune-associated biomarkers for prognostic prediction that could be useful to optimize patient management.

An email-based survey of treatment strategies in children with septic shock in China / 中国小儿急救医学

Objective:To describe the treatment strategies in children with septic shock in China.Methods:A questionnaire was prepared and 368 pediatric intensivists from the Pediatric Critical Care Physician Branch of Chinese Medical Doctor Association were surveyed about the treatment of pediatric septic shock from April to June 2017.Results:Surveys were received from 87.2%(68/78) institutions and 368 questionnaires (response-rate 45.1%) were included.59.2% and 77.7% of the respondents chose debridement surgery and fluid drainage as source control intervention.Antibiotics were used within 1 hour of shock in 90.8% of respondents.98.4% of respondents chose normal saline, 72.3% of respondents chosen albumin, and 53.8% of respondents chosen plasma for fluid resuscitation.When no venous access was available during shock resuscitation, 57.1% of respondents preferred intraosseous access.79.3% and 83.2% of the respondents used the adjuvant therapy such as glucocorticoids and intravenous immunoglobulin.96.7%, 85.3% and 22.0% of respondents were likely to provide oxygen and mechanical ventilation, continuous renal replacement, and extracorporeal membrane oxygenation as organ support, respectively.Additionally, 322 (88.7%), 188 (51.1%), and 85 (23.1%) respondents chose the "best advice" options to simulated clinical cases of fluid resuscitation, inotropic agents, and vasoactive agents, respectively.In the simulated cases of vasoactive drugs and inotropic drugs, 69.3% and 24.2% of the respondents chose fluid resuscitation strategy, respectively.In cases of fluid resuscitation, 49.7% (183/368) of respondents reported performing fluid responsiveness and volume status assessment, and instruments used in the assessment included bedside echocardiography[39.4% (145/368)], bioreactance[10.3% (38/368)], transpulmonary thermodilution devices[6.3% (23/368)]. Pediatricians who received advanced life support courses for children ( P=0.006) and intensive care specialist training center training ( P=0.002) were more likely to choose the " best recommendation" option than those who did not attend the training. Conclusion:The current status of pediatric septic shock treatment strategies in China are active source control intervention, antibiotic use and organs support, and increased awareness of non-invasive hemodynamic monitoring.However, there may be excessive fluid infusion and inappropriate use of plasma, glucocorticoids and intravenous immunoglobulin.Different training and continuing education may improve rational treatment strategies.

The predictive value of dynamic monitoring pediatric sequential organ failure assessment score for the prognosis in children with sepsis / 中国小儿急救医学

Objective:To dynamically monitor the pediatric sequential organ failure assessment(pSOFA) score of children in PICU at different time points, and to evaluate the predictive value of pSOFA score for the prognosis of children with sepsis.Methods:A multicenter prospective observational study was conducted to collect the data of children with sepsis admitted to the PICU of four children′s hospitals in Shanghai from December 2018 to December 2019(Children′s Hospital of Fudan University, Shanghai Children′s Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai Children′s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, and Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine). We collected their pSOFA scores on the 1st, 3rd, and 7th day after sepsis diagnosis and the highest score.The patients were divided into survival group and death group according to the clinical outcomes at the time of leaving PICU.The clinical characteristics of two groups were compared.Receiver operating characteristic(ROC) curve were used to assess the resolution of the pSOFA score.Logistic regression was used to analyze the relationship between pSOFA score and sepsis mortality.Results:A total of 170 cases diagnosed sepsis were included, with a median age of 32.5(11.5, 83.2) months, and a median length of stay in PICU of 10(6, 21) days.Forty-two died and 128 survived.The medians of the 1st, 3rd, 7th day and the highest pSOFA score of the children in death group[10(7, 12) points, 9(5, 10) points, 7(4, 10) points, 11(7, 12) points, respectively] were higher than those in survival group[4(2, 8) points, 3(1, 6) points, 2(0, 5) points, 6(3, 8) points, respectively]( P<0.05). The area under the ROC curve of the pSOFA score predicting death on day 1 after sepsis diagnosis was greater than that on days 3, 7 and the highest pSOFA score[0.84(95% CI 0.79-0.91) vs.0.80(95% CI 0.71-0.89), 0.77(95% CI 0.65-0.89), 0.83(95% CI 0.77-0.90)], but the difference was not statistically significant( χ2=1.660, P=0.646). The pSOFA score on the first day of diagnosis had the best cut-off value of >6 points for predicting the risk of death from sepsis, with a sensitivity of 97.6% and a specificity of 53.9%.Logistic regression analysis of pSOFA score and childhood sepsis death showed that the OR values corresponding to the 1st, 3rd, 7th day of diagnosis and the highest pSOFA score were 1.58(95% CI 1.350-1.840), 1.39(95% CI 1.218-1.595), 1.38(95% CI 1.184-1.617) and 1.55(95% CI 1.333-1.800), respectively(all P<0.05). The 1-point increase in pSOFA score on the first day of diagnosis of sepsis was associated with a 58% increase in the hazard ratio for death, and each 1-point increase in the highest pSOFA score was associated with a 55% increase in the hazard ratio for death. Conclusion:The 1st, 3rd, 7th day of sepsis diagnosis and the highest pSOFA score could better predict the mortality risk of sepsis in children.Dynamic monitoring of the pSOFA score at different time points has a certain clinical value in predicting the progression and prognosis of children with sepsis.

The predictive value of dynamic monitoring pediatric sequential organ failure assessment score for the prognosis in children with sepsis / 中国小儿急救医学

Objective:To dynamically monitor the pediatric sequential organ failure assessment(pSOFA) score of children in PICU at different time points, and to evaluate the predictive value of pSOFA score for the prognosis of children with sepsis.Methods:A multicenter prospective observational study was conducted to collect the data of children with sepsis admitted to the PICU of four children′s hospitals in Shanghai from December 2018 to December 2019(Children′s Hospital of Fudan University, Shanghai Children′s Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai Children′s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, and Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine). We collected their pSOFA scores on the 1st, 3rd, and 7th day after sepsis diagnosis and the highest score.The patients were divided into survival group and death group according to the clinical outcomes at the time of leaving PICU.The clinical characteristics of two groups were compared.Receiver operating characteristic(ROC) curve were used to assess the resolution of the pSOFA score.Logistic regression was used to analyze the relationship between pSOFA score and sepsis mortality.Results:A total of 170 cases diagnosed sepsis were included, with a median age of 32.5(11.5, 83.2) months, and a median length of stay in PICU of 10(6, 21) days.Forty-two died and 128 survived.The medians of the 1st, 3rd, 7th day and the highest pSOFA score of the children in death group[10(7, 12) points, 9(5, 10) points, 7(4, 10) points, 11(7, 12) points, respectively] were higher than those in survival group[4(2, 8) points, 3(1, 6) points, 2(0, 5) points, 6(3, 8) points, respectively]( P<0.05). The area under the ROC curve of the pSOFA score predicting death on day 1 after sepsis diagnosis was greater than that on days 3, 7 and the highest pSOFA score[0.84(95% CI 0.79-0.91) vs.0.80(95% CI 0.71-0.89), 0.77(95% CI 0.65-0.89), 0.83(95% CI 0.77-0.90)], but the difference was not statistically significant( χ2=1.660, P=0.646). The pSOFA score on the first day of diagnosis had the best cut-off value of >6 points for predicting the risk of death from sepsis, with a sensitivity of 97.6% and a specificity of 53.9%.Logistic regression analysis of pSOFA score and childhood sepsis death showed that the OR values corresponding to the 1st, 3rd, 7th day of diagnosis and the highest pSOFA score were 1.58(95% CI 1.350-1.840), 1.39(95% CI 1.218-1.595), 1.38(95% CI 1.184-1.617) and 1.55(95% CI 1.333-1.800), respectively(all P<0.05). The 1-point increase in pSOFA score on the first day of diagnosis of sepsis was associated with a 58% increase in the hazard ratio for death, and each 1-point increase in the highest pSOFA score was associated with a 55% increase in the hazard ratio for death. Conclusion:The 1st, 3rd, 7th day of sepsis diagnosis and the highest pSOFA score could better predict the mortality risk of sepsis in children.Dynamic monitoring of the pSOFA score at different time points has a certain clinical value in predicting the progression and prognosis of children with sepsis.

Research progress on the roles and mechanisms underlying metabolic molecules involved in nutrition therapy and immune regulation in sepsis / 中华危重病急救医学

The pathology of sepsis is extremely complex. Pathogen invasion, inflammatory factors secretion, coagulation disorder and microcirculation disturbance lead to metabolic disorder and organ dysfunction. In recent years, immunometabolism has aroused continuous attention in aspect of nutrition therapy and immune intervention for sepsis. Nutrition metabolites include amino acids, fatty acids, and glucose metabolites, which are not only the nutritional ingredients, but also the regulators of innate immune and adaptive immune. Fatty acids and glucose metabolites are involved in regulation of immune response mainly via free fatty acid receptors and AMP-activated protein kinase/mammalian target of rapamycin (AMPK/mTOR) signaling pathway. Here, we summarized the research progress on the roles of nutrition metabolites in nutrition therapy and immune regulation during sepsis, which could provide a new direction for the development of metabolic therapy for sepsis.

Boron neutron capture therapy of cancers: principles and recent research progress / 中华放射医学与防护杂志

Boron neutron capture therapy (BNCT) is a new method for the precise treatment of cancers.By this method, cancer cells can be selectively killed by α particles and recoiling 7Li nuclei generated by the nuclear fission reaction occurring when the 10B isotope atoms in cancer cells capture thermal neutrons.The key to a successful BNCT is to deliver sufficient 10B into the cancer cells.The purpose of this review is to introduce the principles of BNCT and review recent progress in the development of neutron sources and boron delivery agents, as well as the result of BNCT clinical trials.

6-Formylindolo3,2-bcarbazole alleviates lipopolysaccharide-induced acute lung injury via suppressing endoplasmic reticulum stress / 中华危重病急救医学

Objective:To investigate the effect and mechanism of 6-formylindolo[3,2-b]carbazole (FICZ) on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice.Methods:Male C57BL/6J mice aged 8-12 weeks were divided into 4 groups with 8 mice in each group, according to the method of simple random sampling. Sepsis-induced ALI mice model was established by intraperitoneal injection of LPS 5 mg/kg (LPS group), and phosphate buffer saline (PBS) control group (PBS group) was injected with equal volume of PBS. The LPS+FICZ group was intervened by intraperitoneal injection of 1 μg FICZ 1 hour after LPS stimuli, while the FICZ control group (FICZ group) was given the same amount of FICZ 1 hour after intraperitoneal injection of PBS. Serum and lung tissue were collected 24 hours after LPS stimuli, and the pathological changes of lung tissue were analyzed by hematoxylin-eosin (HE) staining and wet/dry weight (W/D) ratio of lung tissue. The concentrations of inflammatory factors in serum and lung tissue were detected by enzyme linked immunosorbent assay (ELISA). The expression levels of endoplasmic reticulum stress signaling pathway related molecules were detected by real-time fluorescent quantitative polymerase chain reaction (RT-qPCR) and Western blotting.Results:Compared with PBS group, inflammatory cell infiltration, alveolar collapse and obvious alveolar exudative lesions had increased, lung tissue W/D ratio was significantly increased, serum interleukin-6 (IL-6) level, lung tissue IL-6 mRNA expression, and the mRNA expressions of glucose-regulated protein 78 (GRP78), protein kinase R-like endoplasmic reticulum kinase (PERK), CCAAT/EBP homologous protein (CHOP), and the protein expressions of GRP78, PERK, activating transcription factor 6 (ATF6), CHOP in lung tissue were significantly increased in LPS group. However, the indexes of FICZ group were not affected. Compared with LPS group, LPS+FICZ group had less inflammatory cell infiltration, relatively intact alveolar structure. Lung W/D weight ratio in LPS+FICZ group was significantly decreased (5.38±0.10 vs. 6.60±0.30, P < 0.01), so as serum IL-6 (ng/L: 15.55±3.77 vs. 32.22±3.84) and lung IL-6 mRNA expression (2 -ΔΔCt: 0.79±0.21 vs. 6.89±0.92, both P < 0.01). The mRNA expressions of GRP78, PERK and CHOP were also significantly decreased [GRP78 mRNA (2 -ΔΔCt): 1.90±0.16 vs. 7.55±1.29, PERK mRNA (2 -ΔΔCt): 1.68±0.20 vs. 4.54±0.89, CHOP mRNA (2 -ΔΔCt): 1.13±0.24 vs. 4.44±1.13, all P < 0.05], and the protein expressions of GRP78, PERK, ATF6 and CHOP were significantly decreased (GRP78/GAPDH: 0.59±0.02 vs. 0.77±0.01, PERK/GAPDH: 0.48±0.03 vs. 1.04±0.05, ATF6/GAPDH: 0.51±0.03 vs. 0.65±0.01, CHOP/GAPDH: 0.91±0.05 vs. 1.11±0.07, all P < 0.05). Conclusion:FICZ protects LPS-induced ALI possibly via suppressing endoplasmic reticulum stress and reducing IL-6 expression in blood and lung tissue.

Analysis of the clinical characteristics and risk factors of death of accidential injuries in pediatric intensive care unit / 中国小儿急救医学

Objective:To explore the clinical characteristics and prognostic risk factors of accidental injuries in pediatric intensive care unit(PICU).Methods:The children with accidental injuries admitted to the PICU at Shanghai Children′s Hospital from January 2017 to December 2019 were analyzed retrospectively.The patients were divided into survival group and death group according to outcome.We collected the patients′ clinical data and laboratory indexes, and analyzed the differences between two groups.Multivariate Logistic regression was used to screen the risk factors of death and receiver-operating characteristic(ROC)curve was used to determine the threshold.Results:(1)A total of 253 children were included, accounting for 5.2% of PICU hospitalization during the same period.There were 137 males(54.2%)and 116 females(45.8%), with an average age of 45(19, 96)months.The top three causes of accidental injuries were fall injury in 82 cases(32.4%), traffic accident in 70 cases(27.7%)and foreign body in 39 cases(15.4%). There were 22 cases of deaths, with a fatality rate of 8.7%.(2)The mean arterial pressure at admission in the death group was lower than that in the survival group( P<0.05), and the total length of stay was longer( P<0.001). There were significant differences in Glasgow coma scale, Pediatric Risk of Mortality Scoring Ⅲ(PRISM Ⅲ)between the two groups( P<0.001). In the death group, and the blood lactic acid(LA) significantly increased( P<0.001), hemoglobin and fibrinogen were lower than those in the survival group, the activated partial thromboplastin time and prothrombin time(PT)were significantly prolonged( P<0.001). (3)Multivariate Logistic regression analysis showed that PRISM Ⅲ score, LA and PT were independent risk factors for the death of accidental injuries.The area under curve(AUC)of PRISM Ⅲ score was 0.987(95% CI 0.976-0.999, P<0.001)and the cut-off value was 11 with a sensitivity of 100% and a specificity of 95.7%.The AUC of LA was 0.886(95% CI 0.810-0.961, P<0.001)and the cut-off value was 3.1 mmol/L with a sensitivity of 85.7% and a specificity of 77.3%.The AUC of PT was 0.835(95% CI 0.730-0.941, P<0.001)and the cut-off value was 13.9 s with a sensitivity of 86.6% and a specificity of 72.7%. Conclusion:The main accidental injuries in PICU of our hospital in the past three years are falling injuries, traffic accidents and foreign body injuries.PRISM Ⅲ score, LA and PT at admission are independent risk factors for predicting death.

Mycoplasma pneumoniae induced coagulopathy and thrombosis in children / 中国小儿急救医学

Mycoplasma pneumoniae infection can cause coagulation dysfunction and thrombosis, involving organ including deep vein, lung and brain, etc.Central venous catheterization is the most important risk factor for deep venous thrombosis.Lung consolidation more than 2/3 is a high risk of pulmonary embolismin mycoplasma pneumoniae pneumonia.Elevated blood D-dimer over 5 mg/L is an independent risk factor for predicting thrombus.Color Doppler ultrasound and CT angiography(CTA) are the main methods to determine thrombosis.Deep venous thrombosis or pulmonary embolism should be treated with individualized anticoagulant and thrombolytic therapy.

Effect of therapeutic plasma exchange on myasthenia gravis patients in children / 中国小儿急救医学

Objective:To investigate the effects of therapeutic plasma exchange(TPE)as adjuvant therapy in children with myasthenia gravis(MG)in pediatric intensive care unit(PICU).Methods:A retrospective study was conducted in 7 children with MG admitted to PICU at Shanghai Children′s Hospital from January 2016 to December 2019.TPE was performed on unsatisfactory effect of acetylcholinesterase inhibitors, glucocorticoids or IVIG.The TPE dose was 50-70 mL/kg for 2 to 3 times for each case.The clinical symptoms, anti-acetylcholine antibody(AChR-Ab)level and prognosis were measured before and after TPE.Results:Seven children with myasthenia gravis admitted to PICU from January 2016 to December 2019, including 4 cases of systemic myasthenia gravis(1 case of myasthenia crisis with respiratory failure)and 3 cases of ocular myasthenia gravis.The AChR-Ab level decreased from 1.66(0.99, 3.33)nmol/L before TPE to 0.66(0.40, 10.97)nmol/L after TPE( Z=-2.545, P=0.011). The symptoms of muscle weakness and blepharoptosis were partially or completely relieved in 7 cases.There were no significantly changes in the levels of circulating immune complex, complement C3, CD4 + , CD8 + and NK cells before and after TPE(all P>0.05). During the process of TPE, 2 cases had mild rash, and 1 case had hypotensive shock, which were recovered after timely treatment.After TPE, the fibrin levelsdecreased from 1.90(1.40, 2.40)g/L to 1.10(1.00, 1.30)g/L( Z=-3.092, P=0.002). Conclusion:TPE reduce the AChR-Ab levels and improve the short-term symptoms in children with myasthenia gravis who have failed conventional treatment.TPE may be an optional therapy for pediatric severe MG.

Mechanical ventilation for severe cerebrospinal cord injury in children / 中国小儿急救医学

Cerebrospinal cord injury is one of common disease in pediatric intensive care units.In patients with severe neurological diseases, mechanical ventilation is usually used for treatment.Mechanical ventilation itself can affect nervous system by affecting cerebral hemodynamics and causing inflammation, as well as the interaction between brain and lung.This review mainly described the mechanical ventilation strategy for patients with severe cerebrospinal cord injury, and optimized the treatment of mechanical ventilation.

Research progress on AMPK/mTOR signaling pathway involved in immunometabolic regulation in sepsis / 中国小儿急救医学

The occurrence, development and prognosis of sepsis are closely related to immune regulation.Immunometabolism has been the research hotspot of immune intervention in sepsis in recent years.AMP-activated protein kinase(AMPK)and mammalian target of rapamycin(mTOR)are star molecules involved in metabolic regulation.As an important way of immunometabolic regulation in sepsis, AMPK-mTOR is involved in the process of chemotaxis of neutrophils, the polarization of macrophages, the development and differentiation of natural killer cells and dendritic cells, and the development and functional regulation of T cells.This article reviewed the research progress of AMPK-mTOR signaling pathway on regulating metabolic reprogramming in immune cells, which contributes to immunoregulation in sepsis.

Sepsis-related mortality and family socioeconomic features of septic patients in pediatric intensive care unit in the Yangtze River Delta / 中国小儿急救医学

Objective:To investigate pediatric sepsis-related mortality of pediatric intensive care unit(PICU) and family socioeconomic status in Yangtze River Delta.Methods:A prospective, multicenter observational study was conducted to collect sepsis cases from eight PICUs in Jiangsu, Zhejiang and Shanghai from August 2016 to July 2017.Sepsis cases were divided into normal sepsis group and severe sepsis group.The primary outcome was in-hospital death.Patient data were prospectively collected including age, gender, medical insurance status, long-term residence, source of admission, first-day pediatric sequential organ failure score(pSOFA) score, underlying diseases and socioeconomic characteristics including family education level, family annual economic income.Results:A total of 4, 983 patients admitted in PICUs, of which 651 patients were diagnosed sepsis on admission.The prevalence of sepsis was 13.1% (651/4 983), and overall mortality was 11.7% (76/651). The prevalence of severe sepsis was 28.3% (184/651), and the mortality was 20.1% (37/184). The overall median age was 0.9 years old.The infant group accounted for 50.8%, including 331 cases, followed by toddler group 19.8% (129 cases), preschool group 13.0% (86 cases), school group 11.8% (77 cases), and adolescent group 4.3% (28 cases). The median pSOFA score was 4.Logistic regression analysis showed that the OR value was 1.4(95% CI 1.3-1.5) of pSOFA score corresponding to the death of sepsis in hospital.There were 14.6% patients left hospital in medical insurance group, while 27.4% in non-medical insurance group, and there was significant difference between these two groups.The median of daily cost was 5, 446 RMB, among which the median of daily cost of sever sepsis was 6, 678 RMB.The median of total cost for sepsis was 36, 109 RMB, and that for severe sepsis was 41, 433 RMB. Conclusion:The sepsis-related mortality was high in PICU.The pSOFA score has a certain predictive value for the prognosis of sepsis.The burden of sepsis is still heavy.Compared with medical insurance families, non-medical insurance families have a higher proportion of choosing left hospital.

Primary screening of children with vaccination contraindications and referral recommendations: suggestions for primary care of children in Shenzhen / 中华实用儿科临床杂志

Guideline or consensus for the vaccination of children with special conditions like immunocompromised children may be more suitable for pediatricians.However, the vaccination of children in China is mainly performed by general practitioners or child health care practitioners in community health service centers.They need to master the screening knowledge of contraindications and precautions for the vaccination of children, and make the decision to referral to specialists.Based on the technical guidelines for Immunization of National Health Commission of the People′s Republic of China, Best Practices Guidance of the Advisory Committee on Immunization Practices and contraindications and precautions proposed by the Immunization Action Coalition, 20 suggestions for primary screening of children with vaccination contraindications and referral recommendations for primary care providers were developed by experts from the Integration of Medicine and Prevention in Children of Health Commission of Shenzhen Municipality.