1.Practical Analysis on Establishing the Control Model of Medical Insurance in Public Hospital Internal Operation Based on Utility Theory
Guogang LIU ; Erwei ZHENG ; Songtao QU
Chinese Health Economics 2014;(7):30-32
To establish the control model of medical insurance in hospitals, so as to improve the effectiveness of internal operation for medical insurance fund. Methods: Using the utility theory to establish the control model, with which the medical service provider is individual rationality constraints and incentive compatibility constraint. Results: The bonus coefficient and punishment coefficient can be calculated by means of evolutionary programming. Conclusion: The control model of hospital internal medical insurance fund is useful in controlling the medical insurance expense, it also provides the guidance and references for performance management and internal operation.
2.Analysis of ESI Database-covered high academic level papers published by colleges and universities of traditional Chinese medicine
Sufei HE ; Shuo WANG ; Erwei LIU
Chinese Journal of Medical Library and Information Science 2017;26(4):51-55,67
After the status quo of ESI-covered pharmacology, toxicology and clinical medicine in domestic universities of traditional Chinese medicine was described, the papers and highly-cited papers published by these universities, total citations, citations of each paper were ranked and compared.The related problems and development tendency of different subjects were analyzed with suggestions put forward for the construction of first class subjects in domestic colleges and universities of traditional Chinese medicine.
3.Chemical constituents of Dipsacus asper.
Qiang WANG ; Erwei LIU ; Lifeng HAN ; Yi ZHANG
Acta Pharmaceutica Sinica 2013;48(7):1124-7
To study the chemical constituents of Dipsacus asper, chromatographic methods such as D101 macroporous resin, silica gel, octadecylsilyl (ODS) column chromatographic techniques and preparative HPLC were used, and five compounds were isolated from 70% (v/v) ethanol extract of the plant. By using spectroscopic techniques including 1H NMR, 13C NMR, 1H-1H COSY, HSQC, HMBC and TOF-MS, the compounds were identified as 3beta-hydroxy-24-nor-urs-4 (23), 12-dien-28-oic acid (1), ursolic acid (2), oleanolic acid (3), 3-O-alpha-L-rhamnosyl(1 --> 3)-beta-D-glucopyranosyl (1 --> 3)-alpha-L-rhamnosyl (1 --> 2)-alpha-L-arabinopyranosyl hederagenin 28-O-beta-D-glucopyranosyl (1 --> 6)-beta-D-glucopyranosyl ester (4), 3-O-[beta-D-xylopyranosyl (1 --> 4)-beta-D-glucopyranosyl (1 --> 4)] [alpha-L-rhamnosyl(1 --> 3)]-beta-D-glucopyranosyl (1 --> 3)-alpha-L-rhamnosyl(1 --> 2)-alpha-L-arabinopyranosyl hederagenin (5), separately. Among them, 1 is a new compound, and 2 is isolated from this plant for the first time.
4.Development of HPLC Method to Evaluate Drug-processing Technique of Eucommiae Cortex
Jialong WANG ; Erwei LIU ; Shuai WU ; Zhaoye YIN ; Yi ZHANG
Chinese Herbal Medicines 2011;03(3):221-225
Objective To establish a RP-HPLC method investigate the processing technique and mechanism of Eucommiae Cortex.Methods The RP-HPLC method was applied to simultaneously determining six ingredients,geniposidic acid,geniposide,genipin,chlorogenic acid,(+)-pinoresinol-di-β-D-glucopyranoside,and(+)-syringaresinol-di-β-D-glucopyranoside,in the different processed barks of Eucommia ulmoides.Results The valid method with good accuracy could be well used to study the processing technique of E.ulmoides;Besides,target ingredients in E.ulmoide were decreased within 6 h when they were processed.Conclusion Established RP-HPLC is a reliable method which could be used to research the processing technique of the barks ofE.ulmoides.Moreover,the result of this study could be provided with significant evidence of processed barks of E.ulmoides.
5.Diagnostic value of thyroid imaging reporting and data system in thyroid cancer
Libin LIU ; Erwei HU ; Xunzhen JIANG ; Jie ZHANG ; Xianghui HE
Chinese Journal of Clinical Oncology 2014;(3):180-183
Objective: To retrospectively characterize and analyze the thyroid ultrasound images of thyroid cancer patients, to classify thyroid nodules according to thyroid imaging reporting and data system (TI-RADS), and to evaluate the diagnostic value of TI-RADS. Methods:Clinical data of 160 thyroid cancer patients with 235 nodules from September 2008 to August 2011 were retro-spectively analyzed. All patients underwent conventional color Doppler ultrasonography to evaluate the size, number, shape, boundary, and extent of lesions and blood distribution of the nodules. All nodules were analyzed according to TI-RADS classification and scored to evaluate the diagnostic value of TI-RADS. Results:Among 176 malignant nodules, 144 (81.8%) had lesions showing a mass of irreg-ular boundary with no envelope and halo, 152 (86.4%) were inhomogeneous hypoechoic or slightly hypoechoic, or 144 (81.8%) exhibit-ed microcalcification. TI-RADS scores of 4 or 5 and 2 or 3 were obtained in 160 (90.91%) and 16 (9.09%) of the malignant nodules, re-spectively. Conclusion:Thyroid ultrasound sonogram of ill-defined, irregular shape, hypoechoic or slightly hypoechoic mass, microcal-cification within the mass, and rich blood flow is an important index for the diagnosis of thyroid cancer. Thyroid nodules with a TI-RADS score 4 or 5 have higher possibility for cancer. Therefore, TI-RADS has a significant diagnostic value for thyroid cancer be-fore operation.
6.The clinical observation of ultra-sound guided lumbar plexus and sciatic plexus nerve block combined with general anesthesia on elderly patients undergoing hip replacement surgery
Xiaolong LU ; Bin MEI ; Shishou CHEN ; Xuesheng LIU ; Xuefeng YU ; Erwei GU
The Journal of Clinical Anesthesiology 2016;32(3):237-240
Objective To observe the clinical effects of ultra-sound guided lumbar plexus and sciatic plexus nerve block combined with general anesthesia on elderly patients undergoing hip replace-ment surgery.Methods Eighty elderly patients scheduled for unilateral hip replacement surgery were randomly divided to lumbar plexus and sciatic plexus nerve block combined with general anesthesia group (group N)and general anesthesia group (group G).The airways of all the patients were con-trolled by laryngeal mask airway (LMA)in both groups.The bispectral index (BIS)of patients in both groups was maintained in the range of 45-55.The dosage of sulfentanyl,visual analogue scale (VAS)at 2,4,8 and 24 h after surgery,and the dosage of patient controlled analgesia (PCA)drugs were recorded.The period from end of surgery to extubation,off-bed activity and discharged from hospital,mortality in 30 days after surgery were recorded.Meanwhile,postoperative delirium (POD) and postoperative cognitive dysfunction (POCD),and severe cardiovascular and pulmonary complica-tions were evaluated.Results No patient died in 30 days after surgery in both two groups.One patient suffered from severe pulmonary infection in group G.The dosage of sulfentanyl of group N was less than the value of group G (P <0.05),the periods from end of surgery to extubation,off-bed activity and discharged from hospital of group N were shorter than those in group G (P <0.05 ).The VAS scores and incidence of POD and POCD in group N were lower than those in group G (P < 0.01 ). Conclusion In elderly patients undergoing hip replacement surgery,ultrasound-guided lumbar plexus and sciatic plexus nerve block combined with general anesthesia could help reduce usage of opioids during operation,offer better analgesia effect,shorten the period of off-bed activity and discharged from hospital and reduce incidence of POD and POCD in elderly patients.
7.Changes in status of macrophages during non-ventilated lung injury in patients undergoing long-time one-lung ventilation
Qiying SHEN ; Hongxia TAO ; Zhijun ZONG ; Weiping FANG ; Erwei GU ; Yuanhai LI ; Xuesheng LIU
Chinese Journal of Anesthesiology 2017;37(1):39-42
Objective To evaluate the changes in the status of macrophages during the non-ventilated lung injury in the patients undergoing long-time one-lung ventilation (OLV).Methods Thirty patients of both sexes,aged 35-64 yr,weighing 50-80 kg,of American Society of Anesthesiologists physical status Ⅰ or Ⅱ,scheduled for elective pulmonary lobectomy for lung cancer,were divided into 2 groups (n=15 each) according to the time of OLV:short-time OLV group (<30 min,group S) and long-time OLV group (>2 h,group L).Anesthesia was routinely induced and maintained.Normal lung tissues around the cancer tissues from the lobe of the lung excised were obtained for microscopic examination of pathologic changes which were scored.The activated macrophages (CD68 positive),polarized M1 macrophages (CD86 positive) and polarized M2 macrophages (CD206 positive) in lung tissues were detected using immunofluorescence.The ratio of CD86 positive cells to CD206 positive cells was calculated.Results Compared with group S,lung injury scores on the non-ventilated side were significantly increased,the number of CD68,CD86 and CD206 positive cells in lung tissues was increased,and the ratio of CD86 positive cells to CD206 positive cells was increased in group L (P<0.05).Conclusion Long-time OLV (>2 h) can result in increased number of activated macrophages,especially the polarized M1 macrophages,which may be one of the mechanisms underlying lung injury on the non-ventilated side.
8.Mechanism underlying mitigation of remifentanil postconditioning-induced protection of diabetic cardiomyocytes: the relationship with histone deacetylase 3 expression
Qin LIU ; Manli CHEN ; Erwei GU ; Lijian CHEN ; Lei ZHANG ; Jian DU ; Xinqi CHENG
Chinese Journal of Anesthesiology 2016;36(7):851-854
Objective To evaluate the relationship between histone deacetylase 3 (HDAC3) expression and the mechanism underlying mitigation of remifentanil postconditioning-induced protection of diabetic cardiomyocytes.Methods H9c2 cells were cultured in DMEM/F12 culture medium supplemented with 10% fetal bovine serum.The cells were seeded in 6-well plates (2 ml/well) at a density of 105 cells/ml.After the cells were cultured for 12 h,the cells were attached to the wall and cultured for 48 h in the normoglycemic (5.5 mmol/L) or hyperglycemic (25 mmol/L) DMEM culture medium.The cells were then randomly divided into 6 groups (n =18 each) using a random number table:control group (group CON),hypoxia/reoxygenation group (group H/R),remifentanil postconditioning group (group RPC),hyperglycemia group (group HG),hyperglycemia plus hypoxia/reoxygenation group (group HG-H/R),and hyperglycemia plus remifentanil postconditioning group (group HG-RPC).In H/R,RPC,HG-H/R and HG-RPC groups,the cells were exposed to 95% N2-5% CO2 in an incubator for 5 h after changing the culture medium for Tyrode solution.In H/R and HG-H/R groups,the culture medium was changed to the DMEM/F12 culture medium supplemented with 10% fetal bovine serum and glucose at the corresponding concentration,and the cells were then incubated for 1 h.In RPC and HG-RPC groups,the cells were incubated in the DMEM culture medium containing remifentanil at the final concentration of 1 μmol/L,and the cells were then incubated for 1 h.At 1 h of reoxygenation,the cell viability was measured by CCK-8 assay,the cell apoptosis was detected by AnnexinV-FITC/PI flow cytometry,and the expression of HDAC3 and caspase-3 in cells was detected by Western blot.The apoptotic rate was calculated.Results Compared with group CON,the cell viability was significantly decreased,the cell apoptotic rate was significantly increased,and the expression of caspase-3 and HDAC3 was significantly up-regulated in group H/R (P< 0.05).Compared with group H/R,the cell viability was significantly increased,the apoptotic rate was significantly decreased,and the expression of caspase-3 and HDAC3 was significantly down-regulated in group RPC (P<0.05).Compared with group HG,the cell viability was significantly decreased,the apoptotic rate was significantly increased,and the expression of cspase-3 and HDAC3 was significantly up-regulated in group HG-H/R (P<0.05).There was no significant difference in the parameters mentioned above between group HG-RPC and group HG-H/R (P>0.05).Conclusion The mechanism underlying mitigation of remifentanil postconditioning-induced protection of diabetic cardiomyocytes is associated with hyperglycemia-induced up-regulation of HDAC3 expression.
9.Relationship between maintaining concentration and loss of consciousness concentration of propofol target controlled infusion in patients undergoing heart valve replacement
Lei ZHANG ; Yuwen ZHANG ; Xinqi CHENG ; Huan WANG ; Qing ZHAO ; Xuesheng LIU ; Erwei GU
The Journal of Clinical Anesthesiology 2017;33(4):334-337
Objective To investigate the relationship between maintaining concentration and loss of consciousness (LOC) concentration of propofol target controlled infusion (TCI) in patients undergoing heart valve replacement.Methods Thirty patients undergoing elective heart valve replacement were enrolled to receive propofol by ladder plasma TCI for anesthesia induction,8 males and 22 females.The initial plasma concentration (Cp) of propofol was set to 1.0 μg/ml,0.3 μg/ml Cp was increased every 1 min until LOC when the prediction effect-cite concentration (Ce) reached 0.5 μg/ml,then sufentanil 0.8-1.0 μg/kg and rocuronium 0.6-0.9 mg/kg were given for intubation.When BIS reached 50,Cp was decreased to the level of Ce.All the surgeries were performed under hypothermia CPB.MAP,HR,CVP,CO,SV,SVR,BIS,propofol Cp and Ce values were recorded at baseline (T0),LOC (T1),BIS reached 50 (T2),and other time points during operation (T3-T9).The correlation analysis between propofol Ce at LOC and perioperative variables were completed.Results In correlation analysis,there was a significant positive correlation between propofol Ce at LOC and baseline CO,SV (P<0.01),there was a significant negative correlation between propofol Ce at LOC and age (P<0.05),there was a significant positive correlation between propofol Ce at LOC and propofol Ce at T2-T9(P<0.01).Conclusion In patients undergoing valvular replacement,the Ce of propofol at maintenance are related to the concentration of propofol at LOC,which is helpful for adjusting the Ce of propofol at maintenance according to the Ce of propofol at LOC.
10.Effect of remifentanil postconditioning on myocardial ischemia-reperfusion injury in patients undergoing open heart surgery under CPB
Mingyu ZHAI ; Erwei GU ; Lei ZHANG ; Lijian CHEN ; Yan ZHU ; Yun WU ; Xunqin LIU
Chinese Journal of Anesthesiology 2010;30(8):931-934
Objective To evaluate the effect of remffentanil postconditioning on myocardial ischemiareperfusion (I/R) injury in patients undergoing open heart surgery under CPB.Methods Thirty patients (ASA grade Ⅱ or Ⅲ, NYHA class Ⅰ or Ⅱ ) of both sexes aged 18-45 yr undergoing repair: of ventricular septal defect and/or atrial septal defect under CPB were randomly divided into 2 groups ( n = 15 each): control group (group C)and remifentanil postconditioning group (group R). Anesthesia was induced with midazolam, sufcntanil, propofol and rocuronium. The patients received 5 min infusion of remifentanil at 4 μg · kg- 1 · min - 1 8 min before aortic unclamping in group R, while the patients received equal volume of normal saline in group C. Blood samples were obtained from the right internal jugular vein for determination of plasma concentrations of cardiac troponin-I (cTnI)and MDA and activities of CK-MB and SOD before induction of anesthesia (baseline) and at4, 8, 24 and48 h after aortic unclamping. Results The plasma concentrations of cTnI and MDA and activity of CK-MB were significantly lower, while the plasma SOD activity was significantly higher at 4 and 8 h after aortic unclmping, and the plasma concentration of MDA was significantly lower at 24 h after aortic unclamping in group R than in group C ( P < 0.05 ). Conclusion Remifentanil postconditioning can attenuate myocardial I/R injury in patients undergoing open heart surgery under CPB through inhibiting lipid peroxidation.