1.Crisis management in immediate response to emergent public health event in China
Yifeng YANG ; Chenfang FAN ; Guangwen CAO ;
Academic Journal of Second Military Medical University 1981;0(03):-
Crisis is an emergent event that threatens the national security, social regulation, civilian property and life, and needs urgent, decisive response in the condition of high instability. Crisis management should be prompt, active, honest, responsible and soluble, and should be carried out according to the model of preparation, reduction, response and recovery. SARS outbreak in China revealed constitutive defects in the immediate response for emergent public health event as well as crisis management. This paper provides some information for establishing the immediate response system for emergent public health event and crisis management.
2.Evaluation on effectiveness of stroke intervention in over 35 years old population in Nanhui county of Shanghai city
Guiqing WANG ; Yifeng CAO ; Fengying SHEN
Journal of Clinical Neurology 1995;0(04):-
Objective To evaluate the effectiveness of "screen and target population intervention policy" for stroke intervention in Nanhui county of Shanghai city.Methods A cross sectional survey on stroke was carried out in January 1999,and 696558 population in Nanhui county of Shanghai city were investigated in the study. Surveillance data on incidence and mortality rate of stoke from January 1996 to December 1998 in the county were retrospectively checked and reinvestigated.The CVHI of 35 years old and over in this population which have one and more of risk factors were measured,their CVHI total score
3.Time-frequence analysis of carotid flow doppler signal in normal controls and cerebral infarction patients
Guozheng QIAN ; Youfa LI ; Yifeng CAO ;
Academic Journal of Second Military Medical University 1999;0(12):-
1 kHz at least; For the cerebral infarction cases with carotid atheromatous plaque, the frequence plots for f max , f mode and f mean were separated throughout the cardiac cycle, f max in systole
4.Application of vulnerability appraising in constructing theoretical model for early warning of emergent public health event
Chenfang FAN ; Yifeng YANG ; Guangwen CAO
Academic Journal of Second Military Medical University 2000;0(10):-
Objective:To strengthen the research on theory and method of early warning for emergent public health event,so as to obtain timely information,correctly analyze the situation,and apply effective measures when the event happens.Methods: The definition of vulnerability of emergent public health event and the vulnerability factors were discussed.The indicator system and the evaluating method for public health vulnerability were systematically studied.The extenics theory and the theory of vulnerability evaluation were used for warning exercise.Results: We constructed an extenics model for early warning of emergent public health event;the model was used to evaluate the public health of a population.Conclusion: The theory of vulnerability evaluation is introduced in emergent public health event to construct an extenics model for early warning of emergent public health event;the model can be used to evaluate the public health of certain population.
5.Influence of nursing intervention on oral hygiene of vagrant patients with mental problems
Xiu LI ; Zhi CAO ; Shaowei OUYANG ; Yuanli QIN ; Yifeng PIAO
Modern Clinical Nursing 2017;16(3):33-36
Objective To explore the effect of nursing intervention on the oral hygiene of vagrant patients with mental problems.Methods Toally 80 vagrant patients with mental problems were saved and treated with oral health care intervention for a period of three months.The pre-intervention effects were prepared with the post-intervention ones in terms of tooth brushing,oral health and periodontal disease related symptoms intervention.Results Before intervention,the rate of tooth brushing was significantly higher and the rate of periodontal disease related symptoms significantly lower than that before intervention (P<0.05).The scores on physical function limitation,pain and discomfort,psychological discomfort,weakened ability in independent living and the total score after intervention were all significantly lowered as compared to the pre-intervention.Conclusion Oral nursing intervention can improve oral hygiene and oral health of vagrant patients with mental diseases.
6.Effect of processing on the alkaloids in Aconitum tubers by HPLC-TOF/MS
Min Liu ; Yan Cao ; Diya Lv ; Wen Zhang ; Zhenyu Zhu ; Hai Zhang ; Yifeng Chai
Journal of Pharmaceutical Analysis 2017;7(3):170-175
According to the Chinese Pharmacopoeia 2015, only processed Aconitum tubers can be clinically applied, and the effect of processing is unclear. This research aimed to explore the effect of processing on cardiac efficacy of alkaloids in Aconitum tubers. First, the chemical ingredients in unprocessed and processed Aconitum tubers were identified and compared by using high performance liquid chromatography time-of-flight mass spectrometry (HPLC-TOF/MS) and multivariate pattern recognition methods. Then the representative alkaloids in Aconitum tubers, aconitine, benzoylaconine, and aconine, which belong to diester-diterpenoid alkaloids, monoester-diterpenoid alkaloids, and amine-diterpenoid alkaloids, respectively, were selected for further validation of attenuated mechanism. Subsequent pharmacological experiments with aconitine, benzoylaconine, and aconine in SD rats were used to validate the effect of processing on cardiac functions. After processing the Aconitum tubers, it was found that the contents of diester-diterpenoid alkaloids were reduced, and those of monoester-diterpenoid alkaloids and amine-diterpenoid alkaloids were increased, suggesting that diesterditerpenoid alkaloids were transformed into monoester-diterpenoid alkaloids and amine-diterpenoid alkaloids. Through further decocting the aconitine in boiling water, it was confirmed that the three alkaloids could be progressively transformed. Pharmacological experiments with aconitine, benzoylaconine, and aconine in SD rats showed that aconitine at a dose of 0.01 mg/kg and aconine at a dose of 10 mg/kg enhanced the cardiac function, while benzoylaconine at a dose of 2 mg/kg weakened the cardiac function. The effect of processing is attributed to the transformation of the most toxic diester-diterpenoid alkaloids into less toxic monoesterditerpenoid alkaloids and amine-diterpenoid alkaloids.
7.Relationship Between the Change of Accumulative Scores of Cerebrovascular Hemodynamics and the Risk of Stroke
Jiuyi HUANG ; Guiqing WANG ; Jiping GUO ; Yifeng CAO ; Yongju YANG ; Xuehai YU ; Yan WANG
International Journal of Cerebrovascular Diseases 2008;16(4):273-276
Objective: To compare the accumulative scores of cerebrovascular hemodynamic parameters (CVHP) in different populations and to analyze the relationship between the change of accumulative scores and the risk of stroke. Methods: A total of 10 565 participants aged 40 years and above were selected from a cluster sampling community-based population. Their risk factors were investigated and CVHP was evaluated. The CVHP scores were accumulated by a unified approach, and the incidence of stroke was followed up. The participants were grouped into health adult, single factor exposure, multiple-factor exposure, and newly developed stroke during the follow-up period. The differences of CVHP accumulative scores and the change law among the 4 groups were compared respectively according to age and sex. Results: The accumu-lative scores of the mean (SD) CVHP in the health adult, single factor exposure, multiple-factor exposure, and newly developed stroke groups were 86.44 (20.69), 72.07 (28.10), 60.82(34.64), and4.01 (29.36) in men respectively, and they were 83.95 (22.19), 67.97 (29.73),59.91 (31.34), and 42.64 (28.00) in women respectively, which had a tendency to gradually decrease. The accumulative scores of CVHP and their distributions at the same age stage in all the 4 groups had significant differences (P < 0.01 ). The accumulative scores of CVHP and their distributions for the same factors between all age groups also had significant differences (P <0. 01). Conclusions: The accumulative scores of CVHP had a tendency to gradually decrease from the health adults, risk factor exposure to high risk status before stroke. The decrease of the accumulative scores is closely associated with the increase of stroke risk, which can be used as a predictor of stroke.
8.Comparative analysis of essential oils found in Rhizomes Curcumae and Radix Curcumae by gas chromatography-mass spectrometry
Diya LU ; Yan CAO ; Ling LI ; Zhenyu ZHU ; Xin DONG ; Hai ZHANG ; Yifeng CHAI ; Ziyang LOU
Journal of Pharmaceutical Analysis 2011;01(3):203-207
A comparison of the volatile compounds in Rhizomes Curcumae (Ezhu) and Radix Curcumae (Yujin) was undertaken using gas chromatography mass spectrometi-y (GC-MS). Ultrasonic extraction and GC-MS methods were developed for the simultaneous determination of five sesquiterpenes, namely, α-pinene, β-elemene, curcumol, germacrone and curdione, in Ezhu and Yunjin. Good linearity (r〉0.999) and high inter-day precision were observed over the investigated concentration ranges. The validated method was successfully used for the simultaneous determination of five sesquiterpenes in Ezhu and Yujin. The quantitative method can be effectively used to evaluate and monitor the quality of Chinese curcuma in clinical use.
9.The evaluating value of hippocampal subfield's T2 signal intensity before and after the treatment for mild cognitive impairment
Xiaojie ZHANG ; Zhihong CAO ; Yu LIU ; Yifeng LUO ; Liwei WU ; Hairong SHAN ; Yiwen LIU ; Wenchao XIE
Journal of Practical Radiology 2017;33(5):658-661
Objective To investigate the value of the hippocampal subfield's MRI T2 signal intensity in evaluating the effect of the hydrochloric donepezil for mild cognitive impairment(MCI).Methods 20 MCI patients with hydrochloric donepezil (treatment group) and 20 patients with placebo (control group) were scanned by MRI using FSE-T2 sequence.The margin of hippocampal subfields was outlined manually for each side to measure the MRI T2 signal intensity.The relationship between hippocampal MRI T2 signal intensity and MMSE scores was analyzed in the treatment group.Results Before the treatment, there was no significant difference of the MRI T2 signal intensity between groups.After the treatment, the MRI T2 signal intensity in the bilateral head of the treatment group was significantly decreased compared with the control group(P<0.05).There was an inverse relationship between the MRI T2 signal intensity of the bilateral hippocampal head and MMSE scores in the treatment group(P<0.05).Conclusion The MRI T2 signal intensity in the bilateral hippocampal head could be regarded as a valuable marker in making clinical diagnosis and evaluating the effect of the treatment for MCI in its early stage.
10.Intravenous thrombolysis treatment compliance with alteplase in patients with acute ischemic stroke in Huashan Hospital
Lumeng YANG ; Xin CHENG ; Yifeng LING ; Wenjie CAO ; Fei WU ; Kun FANG ; Qiang DONG
Chinese Journal of Neurology 2015;48(10):845-849
Objective To clarify the intravenous thrombolysis utilization of acute ischemic stroke patients in Huashan hospital,and to analyze the factors affecting thrombolytic therapy compliance.Methods The data from a prospective cohort were analyzed.Consecutive acute stroke and transient ischemic attack patients from Huashan Hospital emergency room were recruited in 2014.Eligible ischemic stroke patients were divided into two groups according to intravenous thrombolysis or not.Results Totally 220 patients from emergency room were assessed in 2014.Among eligible patients,43 patients refused intravenous thrombolysis,whereas 59 patients chose this therapy.After multiple analysis,age,baseline NIHSS score,limb weakness,hemiplegic paralysis,facial paralysis or speech symptoms were significantly different between the two groups (U =936.000,P =0.024;U =284.500,P < 0.01;x2 =8.824,P =0.003;x2 =7.732,P=0.005;x2 =5.169,P=0.038;x2 =5.040,P=0.025).Patients with NIHSS score <7 tended to refuse thrombolysis therapy in the receiver operating characteristic curve analysis (sensitivity 0.93,specificity 0.71).From 2008 to 2014,244 cases were analyzed in the thrombolysis database.Compared with patients with higher baseline NIHSS score,intracranial hemorrhage rate (2.6% vs 19.4%;x2 =12.466,P <0.01),7-day mortality rate (1.3% vs 16.9%;x2 =12.308,P <0.01) and 3-month mortality rate (3.8% vs 21.1%;x2 =11.993,P <0.01) were lower in patients whose baseline NIHSS score < 7 (minor group).A higher rate of excellent outcome (3-month modified Rankin Scale score ≤ 1)was observed in minor group (78.2% vs 38.0%;x2 =34.403,P < 0.01).Conclusions Intravenous thrombolysis was performed in 54.6% of eligible ischemic stroke patients.Age,baseline NIHSS score,limb weakness,hemiplegic paralysis,facial paralysis or speech symptoms were associated with patients' decision of thrombolysis.The effectiveness and safety of intravenous thrombolysis were promising for patients with mild stroke.