Objective:To explore the application effect of data envelopment analysis(DEA)model in the safety and quality management of ventilators in intensive care units.Methods:Based on the Chanis-Cooper-Rhodes(CCR)dual model,by adding constraints,the input-oriented Bank-Carnes-Cooper(BCC)model was constructed to construct the DEA model.Among the 124 related items in the DEA model,20 high-level related items were identified to carry out ventilator quality control management related to clinical service efficiency.A total of 33 ventilators in clinical use in the intensive care unit(ICU)of Jiangsu Province Hospital from October 2021 to September 2023 were selected.Among them,the ventilators used from October 2021 to September 2022 were managed by traditional quality control management methods,and the ventilators used from October 2022 to September 2023 were managed by DEA model.The satisfaction scores,management quality scores and clinical efficiency scores of participants in ventilator use management were compared between the two management methods.Results:The satisfaction scores of medical staff,patients and equipment engineers for ventilator management using the DEA model management method were(96.68±2.25)points,(96.32±2.18)points and(95.66±2.54)points,respectively,which were higher than those of the traditional quality control management method,the difference was statistically significant(t=10.940,15.220,6.674,P＜0.05).The average scores of ventilator operation performance,inspection operation safety and timeliness using DEA model management method were(4.44±0.31)points,(4.53±0.37)points and(4.61±0.36)points,respectively,which were higher than those of the traditional quality control management method,the difference was statistically significant(t=12.692,14.979,17.025,P＜0.05).The average scores of ventilator work efficiency,ventilator response time efficiency and ventilator treatment efficiency using the DEA model management method were(4.49±0.32)points,(4.75±0.35)points and(4.68±0.32)points,respectively,which were all higher than those of the traditional quality control management method,with statistically significant differences(t=21.179,16.785,16.347,P＜0.05).Conclusion:The application of the DEA model in the management of ventilators in ICU can improve the efficiency of ventilator clinical service,improve the satisfaction of ventilator management personnel and the quality of ventilator management.

Objective:To compare the image quality, radiation dose, and total iodine content of abdominal computed tomography (CT) enhancement scanning of overweight and obese patients with different scanning protocols, and to explore the optimal keV image serial for abdominal CT.Methods:A total of 90 overweight or obese patients [24 kg/m 2 ≤ body mass index (BMI) < 28 kg/m 2 or BMI ≥ 28 kg/m 2] were divied into groups A, B and C, with 30 patients in each group. Group A used Gemstone spectral imaging (GSI) mode and contrast medium with 320 mg I/ml, group B used low tube voltage mode (100 kVp) and contrast medium with 370 mg I/ml, and group C used conventional tube voltage mode (120 kVp) and contrast medium with 370 mg I/ml. Monochromatic energy images at 50-70 keV (5 keV interval) were reconstructed for the arterial and portal vein phases of group A. Radiation dose and total iodine content were recorded and calculated for the 3 groups. The region of interest was placed on the organ, blood vessel, and erector spinae muscle at same level. The CT values and image noise values were measured, and the contrast-to-noise ratio (CNR) was calculated. All images were scored subjectively in double-blinded by two radiologists. One-way analysis of variance or Kruskal-Wallis H test were used to compare The CT values, CNRs, and subjective scores of each subgroup image in group A, group B and group C, and the radiation doses and total iodine contents in 3 groups were compared. The optimal keV value for group A was selected. Results:At 50-60 keV, the CT values and CNRs of arterial and portal vein phases in group A were higher ( P < 0.05) than or similar to those in groups B and C ( P > 0.05), and the subjective scores were lower than those of groups B and C at 50 and 55 keV ( H = 34.47, 41.27, P < 0.05), whereas there was no statistically significant difference at 60 keV ( P > 0.05). At 65 and 70 keV, only the CT value and CNR of the renal cortex in group A at the 65 keV of arterial phase were higher than those in groups B and C ( F = 102.38, 29.47, P < 0.001). The subjective scores were not significantly between groups B and C ( P > 0.05). There were no statistically significant difference between CT values, CNRs, or subjective scores in group B and group C ( P > 0.05). The effective doses in groups A and B were 24.72% and 25.78% lower than those in group C, respectively. Compared to groups B and C, the total iodine content in group A decreased by 12.50% and 13.34%, respectively. Conclusions:GSI model combined with a low-concentration contrast medium in abdominal CT for overweight and obese patients can meet the image quality requirements while reducing patient total iodine content and radiation dose. The optimal keV value of enhanced abdominal CT for double phases was 60 keV.

Objective:To study the effect of magnetic nursing concept on improving nurses' nursing ability of extracorporeal membrane oxygenation (ECMO).Methods:In the study, 33 nurses of emergency intensive care unit of The First Affiliated Hospital of Nanjing Medical University from January 2019 to December 2020 were selected as the research objects. From January 2019 to December 2019, the Department carried out routine nursing management, and from January 2020 to December 2020, the Department implemented the management mode of magnetic nursing concept. The mastery of nursing knowledge of ECMO was analyzed by using scale, and the critical thinking ability and self-study ability of the nurses were compared before and after intervention. SPSS 22.0 was used to perform t test on the data. Results:After the intervention, nurses' mastery of respiratory system nursing, circulatory system nursing, fluid balance nursing, skin nursing, digestive system nursing, bleeding, anticoagulant problem nursing, hospital infection prevention and control, and pipeline nursing related knowledge of ECMO patients was significantly better than that before the intervention ( P<0.05). After the intervention, nurses' truth-seeking, open thinking, systematic ability, analytic ability, thinking self-confidence, thirst for knowledge, cognitive maturity and total scale scores were significantly higher than those before the intervention ( P<0.05). After the intervention, nurses' self motivation belief, task analysis, self-monitoring and regulation, self-evaluation and total score were significantly higher than those before the intervention ( P<0.05). Conclusion:The nursing management mode of magnetic nursing concept is of value in improving nurses' autonomous learning ability and critical thinking ability.

Objective:To summarize the clinical experience of extracorporeal membrane oxygenation (ECMO) support in acute myocardial infarction (AMI) complicated by cardiogenic shock.Methods:Thirty-seven AMI patients received ECMO from March 2016 to October 2020 in Emergency Department of the First Affiliated Hospital of Nanjing Medical University were retrospectively analyzed. Gensini score was used to evaluate the coronary lesion severity, vasoactive-inotropic score (VIS) was used to assess the usage of vasoactive-inotropic drugs, and cumulative fluid balance (CFB) was used to calculate the fluid balance status, respectively. According to the infarct-related artery, positive/negative fluid balance, and survival/death outcome, the patients were divided into the negative and positive fluid balance groups, and the survival and death groups, respectively. The relationship between Gensini score, 24-hVIS, CFB and patient outcome was analyzed.Results:Thirty AMI-ECMO patients were enrolled, 12 patients survived and 18 died with a mortality rate of 60.0%, and 80.0% of the infarct-related artery were left main and proximal left anterior descending artery. The Gensini score was 77 (52, 120), 24-h VIS 50.0 (31.1, 80.4), daily fluid volume 28.7 (26.6, 34.4) mL/(kg·d), and CBF -1.8 (-9.7, 8.0) mL/kg. The mortality and 24-h VIS of the negative fluid balance group were significantly lower than those of the positive fluid balance group, and the Gensini score, 24-h VIS and CBF of the survival group were significantly lower than those of the death group.Conclusions:LM and pLAD are the most common infarct-related arteries in AMI-ECMO patients, the Gensini score and 24-h VIS have a certain prognostic value, and early negative fluid balance may improve the survival rate.

Objective:To study the application of blood products in patients with veno-arterial extracorporeal membrane oxygenation (VA-ECMO) and evaluate its effect on the prognosis.Methods:A total of 83 adult patients treated with VA-ECMO in the Emergency Department of the First Affiliated Hospital of Nanjing Medical University from January 2017 to January 2020 were grouped by survival to explore the risk factors of 28-day mortality using binary logistic regression, and the threshold was calculated by ROC curve.Results:Platelet transfusion ( OR=2.506, 95% CI: 1.142-5.499) and non-myocarditis disease ( OR=6.881, 95% CI: 1.615-29.316) were the risk factors of 28-day mortality in adult VA-ECMO patients. The threshold of platelet transfusion was 0.427 mL/(kg·d) (sensitivity 78.4%, specificity 69.6% , AUC 0.735). Conclusions:The increased platelet transfusion is related to the poor prognosis of adult patients with VA-ECMO. Refractory myocarditis patients are better treated with VA-ECMO.

Objective:To analyze the early volume characteristics of patients with severe cardiogenic shock treated with veno-arterial extracorporeal membrane oxygenation (VA-ECMO) and the relationship between their early volume and the prognosis.Methods:This study reviewed patients of Emergency Medical University , treated with VA-ECMO and screened the patients with severe cardiogenic shock and VA-ECMO running more than 72 h for further study. The basic condition of the patients was recorded, and the fluid balance in the first 72 h was analyzed. The patients were grouped according to their fluid balance in the first 72 h. The gender, age, survival rate, continuous renal replacement therapy (CRRT) rate, intra-aortic balloon pump (IABP) rate, and invasive mechanical ventilation rate were compared between the two groups, and the relative risk to the prognosis was calculated. The prognosis was compared between the two groups. Results:Totally 77 patients with severe cardiogenic shock were enrolled. Forty-one cases survived, with an overall survival rate of 53.2%. The volume balance at 48-72 h and the total volume balance at the first 72 h were different between the survival and dead groups. Compared with the positive balance group, patients in the negative balance group were less likely to receive CRRT or invasive mechanical ventilation during the first 72 h. Patients in the negative balance group during the first 72 h had a better survival rate, and their relative risk of survival was 1.81 (95% confidence interval: 1.101, 2.985). However, there was no significant difference in survival rate according to every 24 h fluid balance.Conclusions:Patients with severe cardiogenic shock treated with VA-ECMO who had negative total volume balance during the first 72 h are more likely to survive and less likely to require CRRT or invasive mechanical ventilation.

Objective:To summarize the inter-hospital transport experience on extracorporeal membrane oxygenation (ECMO) led by a team from emergency department.Methods:The clinical data of 21 patients transferred under the support of ECMO between December 2016 and February 2019 were retrospectively analyzed. All patients were transferred to the First Affiliated Hospital of Nanjing Medical University from other hospitals. Interhospital distance, transport methods, patient demorgraphic characteristics, disease diagnosis, intubation location, intubation method, adverse events during transport and transport outcome were retrieved.Results:Eighteen of the 21 patients were transferred under our mobile ECMO team from outer hospitals to our ECMO intensive care unit. Three patients were cannulated by physicians of outer hospital and transported to our ECMO intensive care unit. All patients were transported by ground ambulance, and the distances varied from 2.5 to 252 km, with an average distance of 112.3±103.2 km. No death occurred during transportation. Adverse events in transport occurred in 6 patients. Of these, the most common were patient-related adverse events..Conclusions:Inter-hospital transport by ECMO in China is currently dominated by ground ambulance.. Experienced mobile ECMO team can safely operate inter-hospital transport supported by ECMO

Objective:To evaluate left ventricular systolic function (LVEF) after extracorporeal membrane oxygenation (ECMO) in patients with acute fulminant myocarditis (AFM).Methods:Seven patients were admitted in the First Affiliated Hospital of Nanjing Medical University from August 2018 to November 2018. All the patients accepted veno-arterial extracorporeal membrane oxygenation (V-AECMO). Complications associated with ECMO and clinical outcome were documented. Transthoracic echocardiography (TTE), single photo emission computed tomography (SPECT), and cardiac magnetic resonance (CMR)were performed to evaluate LVEF.Results:Seven patients were successfully weaned from V-AECMO, 2 of whom had oxygenator leakage, 4 had femoral artery bleeding after decannulation, and 2 had femoral artery pesudoaneurysm. There was no statistical difference in LVEF evaluation between TTE and CMR [(62.4±6.8)% vs (58.9±8.2)%, P >0.05]. CMR and SPECT further revealed myocardial pathological change and coronary arterial blood perfusion. Conclusions:ECMO is recommended in patients with AFM. TTE is simple and easy to perform and is not inferior to CMR in LVEF evaluation. CMR can reflect pathological changes of cardiomyocytes at the cellular level, and SPECT can reflect coronary perfusion.

Objective:To summarize the common sites of osteophytes in patients with hand osteoarthritis (OA), and analyze the correlation between the severity of osteophytes and clinical factors.Methods:One hundred and four patients with hand OA were selected and divided into three groups according to the disease duration: <1 year, 1~5 years, >5 years. The first carpometacarpal joint(CMC1), metacarpophalangeal joint(MCP), proximal interphalangeal joint (PIP) and distal interphalangeal joint (DIP) were detected by high fre- quency ultrasound. The location of osteophytes and osteophyte semi-quantitative grading scores (OSGS) were recorded. The patients age, disease duration, erythrocyte sedimentation rate (ESR), C-reactionprotein (CRP), the visual analogy score (VAS) and Australian/Canadian osteoarthrits hand index (AUSCAN) were collected. The indicators of different groups were compared, the incidence and location of osteophytes was calculated, and the correlation between osteophytes and clinical factors was analyzed. Data were analyzed by Wilcoxon rank sum test, Kruskal-Wallis test, χ2 test, Spearman correlation analysis. Results:① Osteophytes accounted for 33.56%(1 047/3 120) of the 3 120 joints in hands. There were statistically significant differences in OSGS and AUSCAN in different groups ( H=13.485, P<0.01; H=51.491, P<0.01), while no statistically difference in VAS, ESR and CRP ( H=5.808, P=0.055; H=2.878, P=0.237; H=2.319, P=0.314). ② In different joint areas of hands, PIP accounted for the largest proportion (46.54%, 484/1 040), followed by DIP (46.51%, 387/832), CMC1 (30.77%, 64/208), and MCP accounted for the smallest proportion(10.77%, 112/1 040). There were statistically significant differences in the incidence of osteophytes in different joint areas( χ2=384.194, P<0.01).③ In the interphalangeal joint areas of hands, the largest osteophytes composition ratio was MCP3 (46.43%, 52/112), PIP3 (30.58%, 148/484) and DIP2 (31.01%, 120/387), respectively. ④ OSGS were positively associated with age, disease course, VAS and AUSCAN ( r=0.370, P<0.01; r=0.382, P<0.01; r=0.215, P=0.029; r=0.390; P<0.01), there was no correlation between OSGS and ESR or CRP ( r=0.173, P=0.079; r=0.162, P=0.101). Conclusion:PIP are the most common sites of osteo-phytes in hand OA, followed by DIP. High frequency ultrasound can help the diagnosis and evaluate the severity of hand OA.

OBJECTIVE：To investigate the effects of Shenfu yixin decoction on the utilization of fatty acid in primary hypoxic cardiomyocytes and its potential mechanism. METHODS ：The apical tissue of neonatal SD rats with 1-3 days old were collected ， and the primary cardiomyocytes were isolated ，cultured and identified. The cardiomyocytes were randomly divided into normal group，model group ，coenzyme Q 10 group（positive control ，1×10－4 mol/L），Shenfu yixin decoction low-dose and high-dose groups（0.25，0.5 mg/mL）. Except for normal group ，cells in other groups were cultured under 5％O2，5％CO2 and 90％N2 for 6 hours to induce hypoxic injury model. After 6 hours of hypoxia ，the content of ATP was detected by luciferase luminescence assay. Western blotting assay was adopted to detect the expression of FAT/CD 36，PPARα and PPARβ/δ. RESULTS：Compared with normal group ，the content of ATP and relative expression of FAT/CD 36 protein were decreased significantly in model group （P＜ 0.05）. Compared with model group ，the content of ATP was increased significantly in coenzyme Q 10 group and Shenfu yixin decoction high-dose group ，while the relative expression of FAT/CD 36 and PPARα protein in coenzyme Q10 group，the relative expression of FAT/CD 36 protein in Shenfu yixin decoction high-dose group as well as the relative expression of PPARα and PPARβ/δ protein in Shenfu yixin decoction groups were decreased significantly （P＜0.05）. CONCLUSIONS ：Shenfu yixin decoction can inhibit the utilization of fatty acid of primary hypoxic cardiomyocytes and improve their energy metabolism by inhibiting the expression of FAT/CD 36，PPARα and PPARβ/δ protein.