Delayed cerebral vasospasm is the leading cause of death in patients with subarachnoid hemorrhage. A good in vivo animal model of cerebral vasospasm after subarachnoid hemorrhage helps to understand the occurrence, development of this cerebral vasospasm, and the complicated and various pathophysiological mechanisms. It will provide important information for clinical interventions

Based on a retrospective review of researches on military stress home and abroad,this paper elaborates on the following4important issues:the promptness of selected literature,the advance of stress theories,the objectivity of the methods and the practicability of the results. [

Objective To study the prognostic value of initial arterial lactate level and to explore the relationship between early arterial lactate and the outcome of patients with acute paraquat poisoning by analyzing the clinical data of 235 cases.Methods A total of 235 patients with acute paraquat poisoning were admitted to the Emergency Intensive Care Unit (EICU) from January 2009 to June 2012.Demographics,clinical and laboratory findings were compared between the survivors and non-survivors.Receiver operating characteristic (ROC) curves were used to identify the optimal cut-off points for initial arterial lactate level.Results Totally 235 patients with average age of (33.6 ± 11.5) years old (ranging from 18 to 74),89 male and 146 female.The median estimated amount of 20％ paraquat ingested was 55 mL,(ranging from 10 to 280,IQR:27 mL,77 mL),the median length of time between paraquat ingestion and the arrival at the emergency department was 4.5 h (ranging from 0.5 to 10.5,IQR:2.3 h,6.8 h).The overall mortality rate was 74.0％ (174/235) during a 28 days follow-up period,only 61 of 235 patients survived.The initial arterial lactate level was higher in non-survivors than that in survivors (2.79 ± 0.76) mmol/L vs.(1.62 ± 0.48) mmol/L,P =0.028).Correlation analyses showed that the initial arterial lactate level was associated with increased risk of 28-day mortality (r =0.26,P =0.004),and as the initial lactate increased,the survival time of non-survivors shortened (F =3.246,P =0.037).Using the ROC curve analysis,the initial arterial lactate level had an area of 0.799 (95％ CI:0.745-0.866) and the cut-off point of concentration was 2.57 mmol/L for prediction of prognosis in patients with acute paraquat poisoning (sensitivity 85.2％,specificity 79.6％,the best Youden index was 0.648).The initial arterial lactate level was higher in patients died from circulatory failure rather than from respiratory failure (5.22 ± 1.46) mmol/L vs.(1.87 ± 0.62) mmol/L,P =0.042.And the survival time of patients died from circulatory failure was shorter than that from respiratory failure (4.1 ± 1.3) d vs.(11.6 ± 3.2)d,P =0.023.With the ROC curve analysis,the initial arterial lactate level had an area of 0.882 (95％ CI:0.805-0.941) and the cut-off point of concentration was 3.65 mmol/L for prediction of prognosis of patients died from circulatory failure (sensitivity 87.6％,specificity 82.5％,the best Youden index was 0.701).Conclusions The initial arterial lactate level may be one of early indicators of prognosis in patients with acute paraquat poisoning and it had high potential in predicting the outcome of patients died from circulatory failure.

Objective To discuss the effect nursing of patients with gynecologic tumor and diabetes mellitus during chemotherapy in order to find effective nursing measure. Methods A retrospective study was carried out in 100 patients with gynecologic tumor and diabetes mellitus during chemotherapy. The treatment process was summarized. Results No incidence of infection and complications of diabetes mellitus were seen in these patients. The adverse effect of chemotherapy was low. Conclusions Strengthening of psychological and diet nursing, prevention of infection and health education proved to be effective measures to improve the life quality and prevent anxiety of patients with gynecologic tumor and diabetes mellitus during chemotherapy.

Objective: To establish an optimized culture condition f or the growth of dermal fibroblasts. Methods: Human, Yorks hire pig or SD rat fibroblasts were cultured in DMEM with fetal boven serum(P BS) at the concentrations(ml/L) of 100 (A), 50 (B), 20 (C) or 20 supplemente d with 0.025 g/L boven pituitary extract (BPE)(D). The proliferation of the cell s were examined by microscopic observation,MTT assay and BrdU analysis. Results: Human dermal fibroblasts grew better in the medium with FBS at 100 ml/L, 50 ml/L and 20 ml/L supplemented with BPE, Yorkshire pig dermal fibroblasts did in medium with FBS at 50 ml/L and 20 ml/L supplemented with BPE . SD rat dermal fibroblasts did in the medium with 20 ml/L FBS supplemented wi th BPE. Conclusion:The favarable serum concentration in me dium for human, Yorkshire pigs and SD rats dermal fibroblasts was different,but the medium with 20 ml/L FBS supplement with BPE is suitable for all 3 kinds of f ibroblasts.

Objective To evaluate the effect on postoperative urinary and sexual function of the radical operation with autonomic nerve preserving for mid low rectal cancer.[WT5”HZ]Method [WT5”BZ]Radical operation with autonomic nerve preserving was performed on 188 cases of rectal cancer. Nerves were fully preserved in 98 cases of Dukes A stage,one or both side nerves preserved in 78 cases of stage B, only S 3,4 nerve preserved in 12 cases of stage C.[WT5”HZ]Result [WT5”BZ]The postoperative voluntary micturition developed at 8 5 days for Dukes A; 9 0 days for stage B; and 16 8 days for stage C. Erection and ejaculation remained in Dukes A, in 96% and 100%;stage B, in 47 4% and 50%;stage C, in 0 and 0. The local recurrence after the operation accounted for 12 8%(24/188), among them Dukes A,B,C were 4 1%,21 9%, and 33 3% respectively.The 5 year survival rate were 77 6%,52 6% and 33 3% respectively.[WT5”HZ]Conclusion [WT5”BZ]The radical operation with autonomic nerve preserving for rectal cancer effects a better life quality not at the expense of local recurrence and reduction of 5 year survival rate.

Objective To investigate the clinical factors dominant in the efficacy of lung recruitment maneuver (RM) with high-level positive end-expiratory pressure (PEEP) under pressure control ventilation in patients with 2009 influenza A (H1N1)-associated acute respiratory distress syndrome (ARDS) by analyzing the clinical data of 24 patients treated with mechanical ventilation.Methods A retrospective study was carried out in a 16-bed capacity emergency intensive care unit (EICU) of the First Affiliated Hospital of China Medical University from October 2009 to January 2010.Twenty-four patients with influenza-associated ARDS were included.During pressure control ventilation,when SpO2 persisted lower than 88％ for more than 30 min,RM with high-level PEEP was initiated to normalize lung volume at 30 cmH2O for 60 s.The RM was responded as SpO2 increased more than 3％ within 15 min; otherwise,the increase below 3％ in SpO2 would be considered non-responded.Variations in respiratory mechanics,oxygen metabolism and hemodynamic parameters were measured before and after RM.Results Of 24 patients with influenza-associated ARDS,16 survived and 8 deceased.The median duration of mechanical ventilation (DMV) in EICU was 5.5 days (range from 3.5 to 12.0 days).During the entire study period,a total of 158 RMs with high-level PEEP were done,including 76 (48.1％) responded RMs (the responded group) and 82 (51.9％) non-responded RMs (the non-responded group).In survivor group,the ratio of effective RM was higher than in nonsurvivors group (66.2％ vs.33.3％,P ＜ 0.01).Compared with the data before RM,HR was increased (92.6 ± 11.8) vs.(73.0 ± 12.6),P =0.038 and MAP was decreased (66.1 ±9.3) mmHg vs.(73.9 ± 11.4) mmHg,P=0.049 during RM,and these difference were not statistically significant at 3 min after RM.The decrease in SpO2 after 134 procedures of RMs in 85.9％ patients,and the minimum value of SpO2 occurred at (2.1 ±0.6) min after RM.In the responded group,the maximum SpO2 were higher than that before RM by (6.9 ± 1.6) ％ occurred at (12.7 ±2.6) min after RM.Compared with the data before RM,SpO2 were increased (90.4 ± 4.4) ％ vs.(86.7 ± 7.6) ％,P =0.047) in responded group at 30 min after RM.The initial PEEP level in the responded group was lower than that of the non-responded group (8.6 ± 3.4) cmH2O vs.(11.3 ±4.2) cmH2O,P=0.028.The initial mean DMV in the responded group was also shorter than that in the non-responded group (4.1 ± 3.1) d vs.(5.8 ± 2.5) d,P =0.011.Furthermore,the initial dynamic lung-thorax compliance (Cdyn) was obviously higher in the responded group than that in the non-responded group (30.8 ±6.2) mL/cmH2O vs.(26.1 ±5.1) mL/cmH2O,P=0.038.Conclusion The lung RM with high-level PEEP may cause temporary hemodynamic changes and the initial PEEP level,DMV,and Cdyn may be potential factors influencing the efficacy of lung RM.

Objective To explore the relationship between distortion product otoacoustic emission (DPOAE) test and pure tone audiometry (PTA), and the application of DPOAE test in occupational health inspection of noise-exposed work. Methods Using the judgment sampling method, 510 noise-exposed workers in an automobile engine factory were selected as the observation group. The observation group was divided into 5 subgroups according to the characteristics of PTA threshold and frequency of hearing loss. Another 50 non-noise-exposed workers in the factory were selected as the control group. DPOAE and PTA were used to detect the pure tone hearing threshold and DPOAE amplitude, signal-to-noise ratio and pass rate of each frequency in the two groups of workers. Results At 0.5-6.0 kHz, the pure tone hearing threshold value of each subgroup was higher than the control group (all P<0.05). At 3.0-6.0 kHz, the DPOAE amplitude and signal-to noise ratio of each subgroup were lower than that of the control group (all P<0.05). At 1.5 kHz, the pass rate of DPOAE in subgroup 1, subgroup 2 and subgroup 3 were higher than the control group (all P<0.05). At 2.0-6.0 kHz, the pass rate of DPOAE in subgroup 4 and subgroup 5 were lower than the control group (all P<0.05). The area receiver operating characteristic curve (AUC) of the observation subgroups and control group were 0.71-1.00 by the PTA. The AUC values of the observation subgroups and control group were 0.57-0.97 by DPOAE. The AUC value in subgroup 5 and control group had a significant difference between the two examination methods (P< 0.01); while the subgroup 1, subgroup 2, subgroup 3, subgroup 4 and control group were no significant differences respectively (all P>0.05). Conclusion DPOAE is easy to operate and can objectively reflect the hearing level of workers exposed to noise. It can be used as a supplementary means of PTA and applied to occupational health examination and hearing monitoring screening.

Objective: To study the effects of BMPs signals on the proliferation of tongue cancer Tca8113 cells. Methods: Th e cDNA of truncated BMP-II receptor was transfected into Tca8113 cells by usin g FuGENE6 transfection kit, the transfected cells were named Tca8113ZR. The pro liferation and DNA synthesis of Tca8113 and Tca8113ZR cells were investigated b y MTT assay,FCM and BrdU analysis. Results: In MTT assay the A value of Tca8113 and Tca8113ZR cells was 0.47?0.01 and 0.35?0.01 (P0.05).Conclus ion: BMPs might be involved in the development of squamous cell carc inoma of tongue.

Objective To study the effect of formaldehyde exposure on DNA-protein crosslinks (DPC) in buccal mucosa cells in students who were taking anatomy course.Methods The modified SDS-KCl precipitation assay published by Zhitkovich and Costa in 1992 was applied to detect DNA-protein crosslinks in human cells.And this method has been used to explore DPC induced by different pollutants in numerous studies.37 medical students (20 males and 17 females) aged 19.24?1.09 (mean?standard deviation) and 40 students (20 males and 20 females) in natural science college aged 19.55?0.99 (mean?standard deviation) were studied.The frequency of exposure to formaldehyde was 6 h per week in exposed group.Results Concentrations of formaldehyde in anatomy laboratory ranged from 0.42 to 1.57 mg/m3.Exposure to formaldehyde resulted in an increase of DNA-protein crosslinks.The percentage (mean?standard deviation) of DNA-protein crosslinks in exposed and nonexposed students were 25.72%?6.48% and 22.88%?5.34% respectively(P0.05).Conclusion The result of the present study suggests that formaldehyde exposure in medical students increases the frequency of DNA-protein crosslinks in buccal mucosa cells and females may be more sensitive to formaldehyde exposure.