Objective To evaluate the efficacy of ketamine in preventing postpartum depression in patients undergoing cesarean section.Methods One hundred and twenty ASA physical status Ⅰ patieuts,aged 18-38 yr,with body mass index ＜35 kg/m2,scheduled for elective cesarean section,were equally and randomly divided into 2 groups using a random number table:control group (group C) and ketamine group (group K).Postoperative analgesia was performed with sufentanil 100 μg in 100 ml of normal saline,and sufentanil was infused at 2 ml/h (bolus dose 5 μg,lockout interval 15 min) in both groups.In group K,ketamine 4 mg/kg was added to analgesic pump.VAS score was maintained＜3.Before surgery and at 1,3,5 and 42 days after surgery,depressive symptoms were measured using the Edinburgh Postpartum Depression Survey (EPDS),and postpartum depression was defined as EPDS score ≥ 13.Postpartum depression and ketamine-related complications occurred within 3 days after surgery in group K were recorded.Results Compared with group C,EPDS scores were significantly decreased at 1,3 and 5 days after surgery,and the incidence of postpartum depression was decreased in group K.Ketamine-related complications were not found in group K.Conclusion Ketamine (infused starting from the end of operation,lasting for 48 h,total amount 4 mg/kg) for postoperative analgesia can prevent postpartum depression to some extent in patients undergoing cesarean section.

Objective To evaluate and analyze the results of one stage anteroposterior decompression and internal fixation for ossification of posterior longitudinal ligaments (OPLL). Methods One stage anteroposterior decompression and fixation was carried out from October 2001 to March 2004 in eight cases of OPLL including seven males and one female with age of 32-55 years (average 48.2 years). Results All cases were followed up for 6-30 months. According to criteria of Japan Orthopedic Association (JOA), the postoperative JOA score increased for 1-8 scores (mean 4.5 scores). The postoperative improvement rate of symptom was 50%. Conclusion One stage anteroposterior decompression and internal fixation is a good alternative method for treatment of OPLL, for it has advantages of complete decompression, reliable therapeutic effect and sound recovery.

Purpose:To compare the survival and toxicities of concureent chemoradiotherapy followed by adjuvant chemotherapy in patients with N1 esophageal carcinoma. Analysis was made for reasons of failure in the patients with N1 esophageal carcinoma. Methods:From August 1998 to August 2000,65 eligible patients with N1 esophageal carcinoma were randomized into the following arms: 33 patients were randomized to concurrent chemoradiotherapy arm, 32 patients to radiotherapy followed by chemotherapy. The schedules of radiotherapy were the same, which were conventional fractionation, total dose 60～70 Gy. The regimen of chemotherapy all consisted of DDP and 5 FU,4 cycles. It started on the first day of radiotherapy, and 15 days after radiotherapy chemoradiotherapy was given. Results:The survival rates at 1,2 and 3 years were 60.2%,43.5% and 25.9% in the concurrent chemoradiotherapy arm, 66.3%, 22.5% and 11.3% in the radiotherapy followed by chemoradiotherapy arm, respectively ( P =0.109). 18.2% in the radiotherapy followed by chemoradiotherapy arm had grad Ⅲ esophagitis, while the concurrent group had 43.7% P

Objective To study the clinical therapeutic effect of combination of Naodekang capsule and western medicine for treatment of patients with mental disorders after bilateral cerebral frontal lobes contusion and laceration.Methods A prospective study was conducted. Sixty-two patients with mental disorders after bilateral frontal lobes contusion and laceration hospitalized from June 2012 to January 2014 in the Department of Neurosurgery in Liangzhou Hospital, Wuwei City, Gansu Province were enrolled. According to random principle, they were divided into combined traditional Chinese and western medicine treatment group (32 cases) and western medicine treatment control group (30 cases). Conventional symptomatic therapy was given to both groups. In the western medicine control group, based on the above conventional treatment, antipsychotic drug risperdal (risperidone) was given, the beginning dosage was 4 mg daily and gradually reduced to 1 mg daily. In combined traditional Chinese and western medicine group, beside the conventional therapy, oral Naodekang capsules and oral risperdal were given. The ingredients of the capsule included: Astragalus 60 g, Radix Paeoniae Rubra 15 g, Rhizoma Chuanxiong 25 g, Angelica 15 g, Earthworm 10 g, Semen Persicae 10 g, Safflower 15 g, Salvia miltiorrhiza 15 g, Rhizoma Gastrodiae 15 g, Uncaria 10 g, Bupleurum 20 g, Pueraria 15 g, Rhizoma Acori Tatarinowii 15 g; the patients took once 3 capsules, three times a day, and risperdal 2 mg per day at the beginning and gradually reduced to 1 mg daily. Before treatment and after treatment for 2, 6 and 12 weeks, the brief psychiatric rating scale (BPRS) score was applied to evaluate the clinical therapeutic effect on the situation of patients' improvement of symptoms; in the two groups, the clinical curative effects were observed and when the psychiatric symptoms were controlled, the mean dosage of antipsychotic western medicine used daily in each patient was calculated.Results After treatment, the BPRS scores in the two groups were lower than those before treatment, from 6 weeks after treatment, the degree of descent in the BPRS score in the combined treatment group was more significant than that in the western medicine group (38.68±7.81 vs. 54.05±6.75,P < 0.05), and the descent was persistent until 12 weeks after treatment (15.46±8.51 vs. 23.98±8.03,P < 0.05). The cure rate of the combined group was markedly higher than that in western medicine group [84.4% (27/32) vs. 76.6% (23/30),P < 0.05]. When the psychiatric symptoms were controlled, the dosage of antipsychotic western drug used in each patient in the combined group was less than that in western medicine group (mg/d: 1.5±0.1 vs. 2.8±0.2,P < 0.05).Conclusion The westernconventional therapy combined with traditional Chinese medicine Naodekang capsule for treatment of mental disorders after bilateral cerebral frontal lobes contusion and laceration has relatively good therapeutic effect.

ve To study the new method for determination of chromium (Ⅵ) in waste water. Methods The chromium (Ⅵ) from waste water samples was seperated by ion-exchange method and concentrated, then was analyzed by inductively coupled plasma-atomic emission spectrometry. Results The precision, average recovery rate and detection limit were 2.05%, 99.7% and 0.018?g/ml respectively. Conclusion This method was easy and rapid to operate, and revealed less interference in determination of chromium (Ⅵ) in industrial waste water.

Objective To investigate the influence of milrinone on systemic inflammation in the perioperative cardiac valve replacement Methods Twenty patients, scheduled for cardiac valve replacement were randomly divided into 2 groups: milrinone and control groups Before anesthesia induction, a bolus of milrinone 30?g/kg was given in 10min, followed by a continuous infusion of 0 5?g?kg 1 ?min 1 during operation in milrinone group and the same volume of saline was administrated in control group The mixed venous blood samples were obtained from the pulmonary artery at the following points : before induction of anesthesia (T 1), 30min after anesthesia (T 2), 30min after the cross clamping of aorta (T 3 ), 10min and 30min after the declamping (T 4,T 5), 30min and 8 h after CPB(T 6,T 7), 24h and 72 h after operation (T 8,T 9) IL 6, IL 8 and IL 10 were determined by enzyme linked immunosorbent assay Results Compared with those at T 1, the levels of WBC,PMN,IL 6 and IL 8 increased significantly from T 5 to T 9, and IL 10 level rose markedly from T 3 to T 9 (P0 05) Conclusions During CPB and cardiac valve replacement the systemic inflammation is obvious , reaches the peak 30 min after CPB and persists to 72h after operation Perioperative administration of low dose milrinone is effective against the inflammation

[Objective]To investigate the efficacy of tissue-engineerring artificial bone in treating rabbit bone defect.[Method]Rabbit bone marrow stromal cell were separated for cell culture,and subculture was done to increase the number of bone marrow stromal cell.A combined grafting material was made of bone marrow stromal cell and bioglass.The mixture,ilium and bioglass were used respectively to repair segment defects created in the radius of rabbits.The repair capability was assessed by figuration,radiography,histochemistry stains,scanning electron microscopy and biomechanical analysis at 12 weeks after operation.[Result]The amount of new bone formation with tissue-engineering artificial bone was more than that of other 3 groups.At 12 weeks the defect was bridged with the appearance of marrow cavities,but the bony healing was not found in the blank controls,which were repaired by fibrous tissue.After 12 weeks,the new bone formation in the group of the combined bone marrow stromal cells and bioglass showed the best performance.There was significant difference between groups.[Conclusion]Bone marrow stromal cell is a kind of good bony stem cell.The mechanism of osteogenesis may attribute to both intramembranous and endochondral ossification.The tissue engineering structuring bone marrow stromal cell is a promising method to repair bone defects.

Objective To investigate the therapeutic effects of melatonin (MT) on human pancreatic cancer in Balb/c nude mice subcutaneous xenograft model. Methods Pancreatic cancer model was established high dose MT(20 mg· kg -1 · d-1 ) , gemcitabine( GEM,50 mg· kg -1 · d-1 ) and high dose MT combination with GEM. Tumor size was measured regularly. The tumor growth curve was drawn. The activity of mice spleen natural killer cell was determined by MTT. Results Compared with the controls [ ( 1. 476 ± 0.075) cm3 ], tumor volumes in low dose MT group[ (0.998 ±0.112)cm3], high dose MT group[ (0.756 ±0.128) cm3], GEM group [ (0. 746 ± 0. 115 ) cm3 ], combination group [ (0. 305 ± 0. 111 ) cm3 ] were significantly decreased ( P <0.01), and the tumor size in high dose MT group was smaller than that in low dose MT group, while the tumor size in combination group was the smallest. The activity of mice spleen natural killer cell was ( 18.07 ± 1.23) %in control group, and they were (44.27 ±3.19)% ,(45.16 ±3.20)% and (30.29 ±2.91)% in low dose MT group, high dose MT group, combination group, which were significantly higher than those in the control group;the activity of natural killer cell in GEM group was ( 14.24 ± 2.70) %, which was significantly lower than that in the control group (P <0.05), but the activity of natural killer cell in combination group was significantly higher than that in the GEM group (P < 0.01 ). Conclusions MT could improve the immune function of mice,inhibit the growth of tumor, and MT combination with GEM may have more potent antitumor effect.

Objective To evaluate the difference of adaptive exposure dose in two digital X-ray imaging systems. Methods Resin phantom and contrast-detail test phantom were used on Cesium iodide and Gadolinium oxide sulfide plate imaging detector DR systems using difference exposure parameters. All entrance surface dose were recorded, Image quality index (IQFinv ) was calculated by CDRAD analysis software. The optimal exposure radiation dose was determined according to the sensitivity and IQFinv. Results There were no significant differences of entrance surface dose between two digital X-ray systems on two different exposure parameters with 70 kV ( P > 0. 05) , while there were significant differences with 125 kV(P < 0.05) . The maximum difference was 28. 57% . The mean IQFinv value of Cesium iodide detector DR and Gadolinium oxide sulfide detector DR with 125 kV and 70 kV were 4. 89 ±1. 01 and 2.47 ±0.25, 5. 10 ±1.05 and 2.38 ±0.43, respectively. There were significant diferences between the two systems under the same exposure parameters (t = 6. 509,10. 158, P < 0. 05). The optimal exposure dose ratio between Cesium iodide and Gadolinium oxide sulfide detector DR system was 1:2. Conclusion According to the IQFinv value, the adaptive exposure parameter can be adjusted to achieve good image quality with low radiation dose on different digital radiography systems.

Objective: To well understand the mental health status and its affecting factors of the residents aged 15 and above of Weihai city. Methods:The sample was randomly chosen by using cluster-based sampling method and was interviewed by using both self-made questionnaire and Kessler 10 rating scale. SPSS was used to analyze the field data.Results:11652 individuals were interviewed, the score distribution in total was 13.3?5.6 and about 22% of them were likely to have a mild or medium or high mental disorder. The factors affecting mental health status were various, not only including general factors such as age, sex, but also other factors such as physical condition.Conclusion:The factors affecting mental health are multiple, about one in five residents are in poor mental status.