Field application of mosquito nets impregnated with Fendona (alphamethrin) was con-ducted in Jiangpu,Liuhe and Yizheng counties (city) during 1992 in order to control malaria and mosquito vector. Three groups were set for control,i.e. ,using mosquito nets impregnat-ed with deltamethrin, DDT spraying,and a group without preventive measures. The result showed that density of mosquito vector declined significantly after using of mosquito nets im-pregnated with Fendona. Mosquito density declined by 71. 58% ,the long-term efficiency last-ed more than 4 months,and local malaria incidence declined by 72. 73%. The effect of this measure was similar with that of using mosquito nets impregnated with deltamethrin, and was much better than that of DDT spraying. Since Fendona is a cheap,odourless,and effec-tive insecticide it is worthwhile to be recommended in malaria control program in the field.

Objective　To improve the treatment effect of primary hepatic cancer (PHC). Methods　Analysis of the influential factors on treatment effect of PHC in China, and propose the countermeasure. Results and Conclusions　The main factors influencing the treatment effect of PHC in China are the followings: (1) Most patients with PHC of subclinical type failed to be diagnosed and treatment in time. (2) As a wrong idea PHC has been considered an “uncurable disease", so the treatment strategy is nagative. (3) Unsuitable choice of treatment resulted in some PHC unable to be resected. (4) Intraoperative massive bleeding due to unskill-operative techniques, increase the postoperative morbidity and mortality. (5) The manner of treatment is not positive for PHC patients with portal cancer thrombosis, bile duct cancer hteombosis and portal hyperlension. (6) Combined therapy can not be used or unsuitably used. The following things should be done in order to improve the treatment effect of PHC: (1) Strengthening improving the health-protective consciousness of people and regular examinaton of “high risk" population. (2) Renewing the professional knowledge in time to improve the level of diagnosis, treatment and operative techniques of medical personnel. (3) strengthening the basic medical research to make a break through in PHC treatment.

Pancreatic cancer is still a dismal disease.Angiogenesis is very important for the development of pancreatic cancer.Pancreatic stellate cells (PSCs) are the main source of extra-cellular matrix of pancreatic cancer and they provide advantageous microenvironment for cancer cells.PSC could promote the angiogenesis of pancreatic cancer both in vitro and in vivo.Further studies of the angiogenesis of pancreatic cancer are helpful in learning the characteristics of development and metastasis of pancreatic cancer,and provide new treatment method in the cellular and molecular levels.

Objective To explore the correlation of cognitive impairment with ischemic strokeinducing cerebral artery,in order to predict and find the correlations between different cognitive dysfunction and different intracranial arterial occlusion.Methods We used Montreal Cognitive Assessment (MoCA) to evaluate neuropsychological statuses in the 250 patients,who developed first time acute myocardial infarction for 2 weeks.MoCA scores and other neuropsychological cognitive assessment scores were recorded.Patients were grouped by the location of intracranial arterial occlusion.The neuropsychological cognitive assessment results were analyzed between groups.Results Middle cerebral artery occlusion was correlated with impairments of visual spatial/executive,attention,language and memory (B=-1.875 ～-1.094,P＜0.05).Anterior cerebral artery and vertebral basilar artery occlusion had correlations with attention impairment (B =-3.977,B =-1.833,P＜0.01).Posterior cerebral artery occlusion could cause visual spatial/executive,language and memory impairment(B=-1.714 ～-1.095,P＜0.05).No correlation of cognitive impairment characteristics with anterior choroidal artery occlusion was found.Conclusions Different arterial occlusion can cause different characteristics of impairment in cognitive function,which can help to predict cognitive impairment after sub-acute stroke.It suggests that some cognitive assessments must be conducted in sub-acute stroke management.

Objective To investigate the preventive effect of fine management of hospital infection quality of obstetric rooming-in,in order to reduce the incidence of hospital infection.Methods Fine management run through each link of the hospital infection control from 2010,including a sound management system,strict implementation of the regulations for the operation and management of hand hygiene system,improvement of the building layout and work flow,strengthening the company staff and the ward environment management and monitoring,and make the management of hospital infection more standard.Results The obstetric rooming-in nosocomial infection rate decreased from 3.90％ in 2010 to 0.78％ in 2012.Fine management significantly reduced the incidence of nosocomial infection in our hospital.Conclusions The implementation of fine management in obstetric rooming-in is conducive to the effective control of nosocomial infection and promotion of maternal and child safety.

Objective To observe the effect of external fixator combined with limited internal fixation in the treatment of complex ankle fractures.Methods According to the digital table,65 patients with complex ankle fracture were randomly divided into treatment group(33 cases) and control group(32 cases).The treatment group was treated with external fixator combined with limited internal fixation,the control group was treated with internal fixation.All patients were followed up for 5 to 20 months.The curative effect and incidence rate of complication of the two groups were observed.Results The excellent rate of the treatment group was 84.85%,which was higher than 62.50% of the control group,the difference was statistically significant(x2=4.20,P<0.05).The incidence rate of complications in the treatment group was 3.03%,which was lower than 18.75% of the control group,the difference was statistically significant(x2=4.18,P<0.05).Conclusion External fixator combined with limited internal fixation can effectively treat complex ankle fractures,the method can not only make patients satisfied with the reduction effect,but also the internal fixation complications such as infection are minimized,the clinical value is extremely high,it is worthy of wide application.

Crohn's disease is one of the main types of inflammatory bowel disease,some patients with Crohn's disease may be beyond the control of the medical complications,finally had to accept surgical treatment.This paper reviews the Crohng disease patients of surgical indications,gastrointestinal complications related to the classification,risk factors,prevention and treatment countermeasure research,designed for Crohn's disease indications for surgery decision and postoperative gastrointestinal complications in the diagnosis,perioperative treatment and prevention to provide some guidance and help.

Layered anatomy is a both ancient and novel conception, which is derived from topographic anatomy.Topographic anatomy and phylembryogenesis are basic academic knowledges of layered anatomy.With the development of laparoscopic surgery and robotic surgery, less bleeding, more meticulous dissection, faster postoperative recovery and lower recurrence rate are required in surgical operation, because of which layered anatomy is mentioned and valued again.Organs in abdominal cavity are composed of different layered tissues,between them are loose connective tissues which are poor in vessels.Layered anatomy in surgical operation can avoid the en bloc dissection of organs, which not only reach total lesion dissection, but also avoid hurting surrounded normal tissues, showing the best surgical results.

0.05).There was a negative correlation between PASP and the level of H2S in 3 groups at time points of pre-operation,1 h and 24 h post-operation (pre-operation,r=-0.66,P

Objective To explore the effect of Chitosan gel (Ⅲ) on the complications from Milligan-Morgan hemorrhoidectomy for treatment of severe mixed hemorrhoids.Methods Seventy-six patients with severe mixed hemorrhoids were randomly divided into treatment group and control group with 38 cases in each group. All patients from the two groups were treated with Milligan-Morgan hemorrhoidectomy. Then Chitosan gel (Ⅲ) was used in the treatment group. The two groups were compared in terms of curative effect, pain level, complications and hospital stay.Results There was no significant difference in the curative effect (P>0.05). But the scores on pain level, hemtochezia, infection and edema of the treatment group were all significantly lower than those of the control group (allP<0.05) and the hospital stay was significantly shorter than that of the control group (P<0.05).Conclusions In the treatment of severe mixed hemorrhoids by Milligan-Morgan hemorrhoidectomy, Chitosan gel (Ⅲ) is effective in relieving pains, reducing hemorrhage, edema and preventing infections and therefore shortens the hospital stay. In view of nursing, it is critical to perform mental care as well as close observations on complications.