Objective To study the HBsAg specific CTL activities activated by dendritic cells derived from human monocytes on the HepG2/S target cells, and further to probe into the anti HBV effect of HBsAg DC (dendritic cell) vaccine. Methods DCs are proliferated from human peripheral blood monocytes by adding GM CSF and IL 4 and then HBsAg specific CTL are activated by DCs pulsed by HBsAg; The target cell line (HepG2/S) expressing HBsAg was set up by transfecting recombinated plasmid with HBV/S gene (PLXSN/S) into HepG2/S cell line; HBsAg specific CTL and HepG2/S target cells were cocultured in 96 well flat bottomed microtiter plates for 48 hours at 37 ?C in 5% CO 2, and then HBsAg specific CTL activities activated by DCs pulsed by HBsAg were detected by counting the number of killed target cells. Results HBsAg specific CTL activated by dendritic cells derived from human monocytes could produce strong killing effect on the target cells HepG2/S cells. It's specific CTL activities were 3.8%, 69.5% and 85.1% in different concentration (0 ?g/L,50 ?g/L and 100 ?g/L) respectively. While, it had no killing effect on the HepG2 cells, so the HBsAg specific killing effect was specific. Conclusions The result shows that HBsAg specific CTL activated by dendritic cells derived from human monocytes has strong killing effect on the HBV.

Objective To evaluate the feasibility of induction with sevoflurane-midaaolam-remifentanil for tracheal intubation without muscle relaxants in patients with huge mediastinal tumor.Methods Twenty-two ASA Ⅰ-Ⅲ patients with huge mediastinal tumor,aged 22-64 yr,weighing 48-76 kg,scheduled for surgery under general anesthesia,were enrolled in this study.Anesthesia was induced with iv injection of midaaolam 0.03 mg/kg and inhalation of 8％ sevoflurane through a mask.Sevoflurane was inhaled at the initial concentration of 8％,followed by decrement of 2％ every 30 s until 4％.When the eyelash reflex disappeared,remifentani1 2 μ g/kg was injected slowly over I min and sevoflurane inhalation was stopped 30 s later.The patients were mechanically ventilated after tracheal intubation.MAP and HR were recorded before induction and immediately before and 1 min after inlubation.The time of disappearance of eyelash reflex was recorded.The inlubation condition was evaluated using VibyMogensen score.Results The time period from sevoflurane inhalation to disappearance of eyelash reflex was(110 ± 14)s.The success rate of tracheal intubation at the first attempt was 86％.The position of the glottis was higher in 2 patients,and tracheal intubation was successfully performed under the guide of fiberoptic bronchoscope.The satisfactory intubation conditions were found in 86％ of cases.Compared with that before anesthesia induclion,MAP and HR were significantly decreased immediately after intubation and at 1 min after intubation(P ＜ 0.05).SpO2 ＞ 95％ in all patients.BIS was maintained at 45-55 during the period(before intubation until 1 min after intubation).Conclusion Induction with sevoflurane-midazolam-remifenlail is rapid and smooth,provides good conditions for intubation and can be applied to tracheal intubation without muscle relaxants in patients with huge mediastinal tumor.

Objective To compare the clinical application of Da Vinci robot surgical system (RSS) with traditional open surgery (TOS).Methods From Feb 2015 to Jul 2016,48 cases of upper abdominal surgical disease patients were divided into RSS group (23 cases) and TOS group (25 patients) randomly.Results The anesthesia time [(194 ±16)min vs.(181 ±11)min,t=3.262,P=0.002] and operation time [(167 ± 14) min vs.(158 ± 14) min,t =2.292,P =0.027] were much longer in the RSS,while the blood loss during operation significantly less than the TOS [(128 ± 62) ml vs.(190 ± 86) ml,t =-2.886,P =0.006].The RSS has obvious advantages in 24 h-drainage [(69 ± 27) ml vs.(114 ± 54) ml.t =-3.680,P =0.001],time to out-of-bed activity [(27.7 ± 8.0) h vs.(35.7 ± 9.9) h,t =-3.067,P =0.004],BPS,postoperative exhausting time[(27.2 ±5.9)h vs.(32.8 ±8.3)h,t =-2.690,P =0.01] and length of hospital stay [(10.4 ± 1.8) d vs.(11.8 ± 1.9) d,t =-2.600,P =0.013].But the total hospital cost was higher in RSS [(117 000 ± 10 000) yuan vs.(77 000 ± 8 000) yuan,t =15.087,P =0.000)].Conclusions The RSS is a much minimally invasive surgery,reducing blood loss and postoperative pain,promoting rapid recovery,shortening hospital stay.

Objective To observe the efficacy of early pulmonary rehabilitation training on respiratory function of patients with hypox-emia after coronary artery bypass grafting. Methods From February, 2013 to September, 2016, 53 patients with hypoxemia after coronary ar-tery bypass grafting were randomly divided into control group (n=25) and observation group (n=28). Both of them received routine therapy, while the observation group received pulmonary rehabilitation training in addition. Results Three days after extubation, the forced expirato-ry volume in one second (FEV1) (measured) and FEV1/forced vital capacity (FVC) were higher in the observation group than in the control group (t>3.590, P<0.01), while the level of PaO2 was higher (t=5.824, P<0.001); the FEV1 (measured), FEV1(measured/ predicted) and FEV1/FVC decreased in both groups (F>1.044, P<0.05). The hospital stay was shorter (t=―2.138, P=0.037). The level of PaO2 was the high-est one day after extubation among three time points in both groups (P<0.001). No significantly difference was observed in mechanical ven-tilation time and ICU stay between two groups (P>0.05). Conclusion Early respiratory exerciser training could improve the respiratory func-tion of patients with hypoxemia after coronary artery bypass grafting, shorten hospital stay.

Objective To evaluate the feasibility of induction with sevoflurane-midazolam-remifentail for tracheal intubation without muscle relaxants in neck brake patients.Methods Forty ASA Ⅰ or Ⅱ patients with cervical spine fracture with dislocation,aged 13-68 yr,scheduled for surgery under general anesthesia,were enrolled in this study.Anesthesia was induced with iv injection of midazolam 0.03 mg/kg and inhalation of 5%sevoflurane through a mask.Sevoflurane was inhaled at the initial concentration of 5%,followed by decrement of 1% every 30 s until 3%.When the eyelash reflex disappeared,remifentanil 2 μg/kg was injected slowly over 45s and 30 s later sevoflurane inhalation was stopped.The patients were mechanically ventilated after tracheal intubation.The time of disappearance of eyelash reflex was recorded.The intubation condition was evaluated using VibyMogensen score.Results All patients were successfully intubated at the first attempt.The time period from sevoflurane inhalation to disappearance of eyslash reflex was(69 ± 4)s.Coughing occurred in 3 cases during intubation.The satisfactory intubation conditions were found in 100% of cases.SpO2 ＞ 95% in all patients.BlS was maintained at 45-55 during the period(before intubation until 3 min after intubation).Conclusion Induction with sevoflurane-midazolam-remifentail is rapid and smooth,provides good conditions for intubation and can be applied to tracheal intubation without muscle relaxants in neck brake patients.

Objective To observe the effect of propofol infusion on the side effects of carboplatin and trometamol at different plasma target concentrations in cesarean section.Methods From January 2016 to October 2017,a total of 184 cases of cesarean section pregnant women in the People's Hospital of Quzhou were selected for prospective study.They were divided into A group ,B group,C group and control group (N group) according to random number table method,with 46 cases in each group.The A,B,C three groups were target -controlled infusion of propofol,the concentrations were 0.8μg/mL,1.2μg/mL,1.6μg/mL,respectively,while N group was infused 0.9%sodium chloride injection at the rate of 0.5mL· kg-1· h-1.The operative time,intraoperative blood loss,fluid replacement,elevated blood pressure,decreased blood pressure ,the incidence of tachycardia and adverse reactions were compared among the four groups.Results The operation time of the four groups were (46.65 ±5.32) min, (49.21 ±4.75)min,(48.74 ±4.28) min,(49.76 ±5.25) min,respectively,the differences were not statistically significant(F＝1.501,P ＞0.05).The volume of intraoperative blood loss in the four groups were (425.66 ± 39.54)mL,(428.71 ±41.03)mL,(427.96 ±41.55)mL,(431.56 ±42.35)mL,respectively,the differences were not statistically significant(F＝1.882,P＞0.05).The fluid replacement in the four groups were (884.59 ±51.22)mL, (879.20 ±47.63)mL,(883.59 ±50.14)mL,(896.33 ±50.23)mL,respectively,the differences were not statistically significant(F＝1.634,P＞0.05).The satisfaction rate of sedation in B group was 91.30%,which was significantly higher than 58.70%in A group and 30.43%in C group(Z＝91.428,P＜0.05).The incidence rates of cardiovascular events in B group and C group were significantly lower than those in A group (all P＜0.05),which in B group were lower than those in C group(all P＜0.05).There were no statistically significant differences in chest tightness ,head-ache,facial flushing incidence in the three groups (χ2＝3.450,4.816,5.396,all P＞0.05).The incidence rates of nausea and vomiting in B group were 8.70%and 4.35%,respectively.The incidence rates of nausea and vomiting in C group were 8.70%and 2.17%,respectively,which were significantly lower than those in A group (26.09% and 19.57%)(χ2＝7.485,10.405,all P＜0.05).Conclusion Targeted infusion of propofol at 1.2 μg/mL can effec-tively prevent the side effects of cesarean section carduvastatin trometamol with good sedative effect .

Objective To compare the blood transfusion effects in salvaged autotransfusion and allogeneic blood trans-fusion in the operation of the lower lumbar fractures under combined spinal-epidural anesthesia. Methods A total of 60 patients who accepted lumbar fractures operation under combined spinal-epidural anesthesia in our hospital from January 2012 to January 2014 were chosen as study objects. According to different blood transfusion ways, 60 patients were divided into the control group and the observation group, with 30 patients in each group. Patients in the control group accepted allogeneic blood transfusion, and patients in the observation group accepted salvaged autotransfusion. The blood transfusion effects and complications in the two groups were compared. Results The infection rate in the ob-servation group was 3.33%, and the infection rate in the control group was 20.00%. The infection rate in the observa-tion group was significantly lower than that in the observation group(P<0.05). In addition, the differences in the average amount of blood transfusion, blood recovery and hospitalization time were statistically significant (P<0.05). Conclu-sion Compared with allogeneic blood transfusion, salvaged autotransfusion has lower postoperative infection rate, shorter hospitalization time and blood recovery, and it is worth promoting salvaged autotransfusion for further applica-tion in lumbar fractures operation.

Objective:To investigate the effects of different analgesic methods of hydromorphone on analgesic efficacy and sleep quality in patients with refractory cancer pain.Methods:Sixty patients with refractory cancer pain who received three-step analgesic treatment in Quzhou People's Hospital from August 2018 to December 2019 and acquired poor analgesic effects were included in this study. They were randomly assigned to undergo either an intravenous patient-controlled analgesia with hydromorphone (HV group, n = 30) or an intrathecal patient-controlled analgesia with hydromorphone (HI group, n = 30) for 10 consecutive days. The analgesic efficacy in each group was evaluated using the numerical rating scale (NRS) before and 2, 4, 24, 48 hours, and 10 days after administration. The frequency of breakthrough pain (BTP) at each time point was recorded. The sedation effect of medication was evaluated using the Ramsay score. The sleep quality of patients was evaluated using the Pittsburgh sleep quality index (PSQI). The activities of CD 3+, CD 4+, and CD 4+/CD 8+ lymphocyte subsets were measured by flow cytometry at different time points. The adverse reactions within 10 days after treatment were observed and recorded. Results:Before and at each time point after treatment, there were no significant differences in NRS score, the frequency of BTP, Ramsay score, and PSQI score between the two groups (NRS score: t = 0.45, 0.91, 0.52, 1.19, 0.97, 1.92, all P > 0.05; frequency of BTP: t = 0.34, 1.88, 0.86, 1.71, 1.22, 0.76, all P > 0.05; Ramsay score: t = 0.56, 0.46, 0.63, 0.22, 0.99, 0.14, all P > 0.05; PSQI: t = 0.86, 1.25, 1.46, 1.05, 0.57, 1.93, all P > 0.05). At each time point after treatment, the activities of CD 3+, CD 4+, and CD 4+/CD 8+ cells increased in each group, and the activities of CD 3+, CD 4+, and CD 4+/CD 8+ cells in the HI group were significantly higher than those in the HV group (CD 3+: t = 3.72, 3.12, 2.85, 3.13, 2.44, all P < 0.05; CD 4+: t = 3.62, 2.45, 3.31, 3.19, 2.70; all P > 0.05; CD 4+/CD 8+: t = 3.10, 2.74, 2.83, 3.24, 3.41, all P < 0.05). The total incidence of adverse reactions was slightly, but not significantly, lower in the HI group than the HV group [14.00% (7/30) vs. 26.00% (13/30), χ2 = 2.70, P = 0.100]. Conclusion:Compared with intravenous administration of hydromorphone, intrathecal administration of hydromorphone can better effectively relieve pain, decrease the frequency of BTP, improve sleep quality, has a good sedative effect, improve immune function, and has fewer adverse reactions.

Objective:To compare the performance of the severity-of-illness score for toxic epidermal necrolysis (SCORTEN) and ABCD-10 (age, bicarbonate, cancer, dialysis, 10% body surface area) scoring systems in predicting death in patients with Stevens-Johnson syndrome (SJS) /toxic epidermal necrolysis (TEN) .Methods:Clinical data were collected from 85 patients with SJS/TEN who were hospitalized in Sichuan Provincial People′s Hospital from January 2010 to April 2021, and retrospectively analyzed. The predicted mortality and actual mortality were compared at each score level of SCORTEN and ABCD-10. The receiver operating characteristic (ROC) curve and Hosmer-Lemeshow goodness-of-fit test were used to evaluate the predictive power and calibration of SCORTEN and ABCD-10 on mortality.Results:Among the 85 patients, 37 were males and 48 were females, and their ages were 52.36 ± 19.31 years (range, 14 - 88 years) . There were 61 cases of SJS, 6 of SJS/TEN overlap, and 18 of TEN. Ten patients died in hospital and the fatality rate was 11.76%. Among the SCORTEN and ABCD-10 components, age > 40 years or ≥ 50 years, epidermal exfoliation > 10% body surface area on the 1st day after admission, heart rate > 120 beats per minute, serum urea nitrogen level > 10 mmol/L and serum bicarbonate level < 20 mmol/L were significantly correlated with death ( χ2 = 4.46, 6.18, 25.50, 15.13, 7.59, 8.38, respectively, all P < 0.05) , while malignancies, serum glucose level > 14 mmol/L, and pre-hospital dialysis were not significantly correlated with death ( χ2 = 0.35, 0.10, 1.38, respectively, all P > 0.05) . There were no significant differences between the predicted mortality and actual mortality at every score level of SCORTEN and ABCD-10 (all P > 0.05) . The ROC curve showed that both SCORTEN and ABCD-10 had good predictive power for death (areas under the curve: 0.874 and 0.867, 95% CI: 0.758 - 0.990, 0.773 - 0.962, respectively) , but the model goodness-of-fit of SCORTEN was superior to that of ABCD-10 ( P = 0.944, 0.048, respectively) . Conclusion:Both SCORTEN and ABCD-10 scoring systems could accurately predict mortality of SJS/TEN patients at early stage, but SCORTEN showed more favourable predictive power and calibration.

Acute-on-chronic liver failure （ACLF） is a complex clinical syndrome of acute liver function deterioration on the basis of chronic liver diseases， characterized by hepatic and/or extra-hepatic organ failure and a high short-term mortality rate. At present， there is still a lack of effective treatment methods， and the mortality rate of ACLF reaches 50% ‍—‍ 90% after comprehensive medical treatment. A simple， rapid， and accurate prognostic prediction model for ACLF can help clinicians accurately judge the prognosis of ACLF patients in the early stage， identify the patients with poor prognosis， and provide early interventions， which can improve patient prognosis to some extent and help to reduce mortality rates. With the continuous development of computer science and increasingly powerful data processing capabilities， artificial intelligence is gaining more attention and has been applied in various aspects of liver diseases including diagnosis， treatment， and prognostic prediction. With reference to the current status of research in China and globally， this article reviews the common prognostic models for ACLF and machine learning-based prognostic prediction models and summarizes the latest research advances， in order to provide new perspectives for the future development of prognostic prediction models for ACLF.