Objective To evaluate the efficacy of hydrocolloid dressings on preventing mechanical phlebitis induced by peripherally inserted central catheter (PICC)in cancer patients. Methods 100 cancer patients with PICC were divided into observation group (n= 50)and control group (n= 50). Hydrocolloid dressing was used in observation group and hot-wet compress was used in control group. Incidence of mechanical phlebitis,comfort degree,and im-plementation time between two groups were compared.Results The incidence of mechanical phlebitis in observation group and control group were 4.0% (2/50)and 22.0% (11/50)respectively,grade of mechanical phlebitis in obser-vation group was significantly lower than control group(P<0.05). The rates of skin irritation,activity limitation, and body exposure in observation group were all significantly lower than control group (0 vs 10 . 0% ,2 . 0% vs 14.0% ,0 vs 16.0% ,respectively,all P<0.05),the implementation time of observation group and control group were (2.8±1.1)and (35.2±7.4)minutes respectively,difference was statistically significant(P<0.05). Conclusion Hydrocolloid dressing can significantly reduce the mechanical phlebitis induced by PICC,enhance pa-tients'comfort degree,and reduce nurses'workload.

Objective To analyze the possible effects of mitochondrial DNA mutation on noise-induced hearing loss.Methods 265 young workers with noise exposure were examined.The average pure tone thresholds at 500,1 000,and 2 000 Hz for 25 voluntary persons were noise-induced hearing loss by nature and selected as the study group.27 voluntary persons with no speech frequency hearing loss were chosen as the control group.DNA was extracted from peripheral blood leukocytes.Polymerase chain reaction(PCR) was used to detect the mtDNA4977 deletion in both groups.Results The detection rate of mtDNA4977 deletion in the study group was 20%(5/25) and it was 0(0/27) for the control group.Conclusion MtDNA4977 deletion in the study group was significantly higher than that of the control group,indicating that mtDNA4977 deletion may play an important role in the development of noise-induced hearing loss.

Objective To investigate the disease medical management behavior patients who discharged from hospital after coronary artery bypass graft(CABG).Methods During June 2013 to March 2014,a total of 110 patients after CABG in Changhai Hospital Affiliated to Second Military Medical University were recruited to fill questionnaire,and the results were analysed.Results The average score of 110 patients of disease medical management behavior was 40.57±5.13,the total score index was 54.09％.In the four dimensions of disease medical management,treatment adherence was the worst which scored 8.19±1.28,and scoring index was 54.60％.Disease knowledge management was the best implementation which scored 13.83±2.05,and scoring index was 52.00％.Gender,education,medical treatment charge of payment and complication were the influence factors of disease medical management behavior.Conclusions Medical staff should adopt different self-management intervention strategy,according to different patients and self management content.

Objective To study the volume of lateral cerebral ventricle in neonates with threedimensional ultrasonography(3F-US),and to investigate the influence of sex,body weight(BW),head circumference(HC)and gestational age(GA) on it. Methods A total of 255 healthy neonates (GA 28~40 weeks) were examined with 3D cranial ultrasound. The ultrasonography was performed with anterior fontanel as the acoustic window,and the data were aquired at the deck of third ventricle on coronal section.The 3D image on the screen was constructed automatically and the volume of lateral cerebral ventricle was (P=0.809),and there was negative correlation between the volume of lateral cerebral ventricle and GA(r=-0.971). The correlation between the volume of lateral cerebral ventricle and HC was positive(r≥According to the relationships among HC(X 1),GA(X 2)and volume of lateral cerebral ventricle(Y),a linear regression equation Y=2.298-0.011 X1-0.04 X2 was obtained(the determinate coefficient R2 was accurately,which would be helpful to the evaluation on the cerebral maturity and the diagnosis of cerebral desease in neonates without wound.

Objective This paper aimes to analyze the scientific research development trend,research emphasis and cooperation situation of Chinese Center for Disease Control and Prevention since its establishment,to provide the suggestions for policy making of scientific management and related decisions.Methods Based on GoPubMed,Literature quantitative analysis was used to analyze the publication time and journal distribution,research topics and core authors of the scientific papers from 2002 to 2015.Results A total number of 4 501 research papers had been published in 576 different kinds of periodicals.Research topics were based on population health with special focus on the epidemiological,microbiological and etiological studies of infectious disease.Chronic non-communicable disease and health research were paying more and more attention to.Core author group and the core research team have been formed.Conclusions The capability to conduct scientific research was increased and the international influence was increasing year by year,the ability of infectious disease control was strengthened,and the scientific research team worked together more closely.Thus,the Chinese Center for Disease Control and Prevention should reinforce scientific management,develop advanced disciplines,as well as improve the quality of scientific research in the future.

Objective To understand the status and administration of Young Scholar Scientific Research Program at China CDC,to analyze the program functioning and raised problems,as well as further discuss administrative strategies internally at institutional level.Methods To review and analyze the archived documents and data materials of Young Scholar Scientific Research Program at China CDC.Results Department of Science and Technology is responsible for the daily management of Young Scholar Scientific Program.The research fields of these projects mainly focused on public health and infectious disease.75 two-year period projects are funded and 55 have been completed so far.Accumulated subsidy amount is up to 6.68 million RMB.146 papers have been published,among which 57 English papers have been published (47 were in SCI journals).And 5 patents were granted.Conclusions The establishment of the Young Scholar Scientific Program has empowered the young fellows for conducting scientific research independently.On the other hand,this program also strengthened technical support for disease prevention and control.It is proposed to go on strengthen the scientific management and further establishing academic communication plat form for young fellows.

Objective To investigate the development of tidal breathing lung function in very low birth weight infants with bronchopulmonary dysplasia(BDP).Methods Two hundred and sixty-two very low birth weight infants hospitalized in Wenzhou Children′s Hospital were enrolled as objects.All infants were given the tidal breathing pulmonary function test within a week before discharge and at the corrected age of 6 to 8 months.According to clinical diagnosis,they were divided into BPD group(n=65) and non-BPD group(n=197),and BPD group were divided into mild group(n=31),moderate group(n=20) and severe group(n=14) according to the severity.The lung function indexes were compared between different groups.Results The results of the test within a week before discharge displayed that the respiratory rates in the BPD groups were higher than those in the non-BPD group(all P＜0.05).The peak expiratory flow(TPEF),tidal expiratory flow at 75%,50%,and 25% tidal volume(TEF75,TEF50,TEF25) in moderate to severe BPD group were higher than those in other groups(all P＜0.05),while in mild BPD group were higher than those in non-BPD group(all P＜0.05).The ratio of time to peak tidal expiratory flow to total expiratory time (TPEF/TE),ratio of volume to peak tidal expiratory flow to total expiratory volume (VPEF/VE) were lower in BPD group than those in non-BPD group,the decline was more obvious as the BPD was more serious(all P＜0.05).No significant differences were found between groups in tidal volume(P＞0.05).The result at the corrected age of 6 to 8 months displayed that TPEF,TEF75,TEF50,TEF25 in severe BPD group were still higher than those in any other group(all P＜0.05),while TPEF/TE,VPEF/VE were lower than those in any other group(all P＜0.05),no significant differences were found between other groups in other indicators(P＞0.05).Conclusion Preterm infants BPD have different degrees of lung injury,but as the age grows some lung function indexes can improve gradually(at the corrected age of 6 to 8 months).However,early severe small airway obstruction is still serious.Therefore,it′s important to prevent and treat BPD for the prevention and regulation of respiratory tract disease in future.

Objective:To introduce a newly modified surgical approach and explore the clinical efficacy of en bloc kidney transplantation from deceased infant donors to adults.Methods:Four cases of en bloc kidney transplantation from deceased infant donor to adult were performed with a new modified surgical approach in renal transplantation and dialysis center of the Second People's Hospital of Shanxi Province from January 2017 to September 2019. All 4 cases were cardiac death donors. There were 3 males and 1 female donors, aged (54 ± 22.69) d and weighing (5.6 ± 0.79) kg. There were 1 male and 3 female recipients, aged (41.5 ± 5.97) years and weighing (45 ± 3.56) kg. For lowering operative difficulties and preventing hemodynamic disturbances, bilateral kidneys were sutured and fixed during trimming. Then end-to-side anastomosis was performed between donor kidney abdominal aortic valve and recipient external iliac artery and between donor renal inferior vena cava valve and recipient external iliac vein.Results:All operations were successful without vascular or urinary complication. The average duration of donor kidney repair was 20 min and the average duration of transplantation 68.75 min. The functions of transplanted kidney recovered well during a follow-up period of 12 months. The long-term survivals of recipient and transplanted kidney were satisfactory.Conclusions:The newly modified surgical approach of en bloc kidney transplantation from deceased infant donor to adult has optimized operative handling. With a higher success rate, vascular complications are lowered. A wider popularization is recommended.

Objective:To investigate clinical application of pudendal thigh flaps in repairing skin and soft tissue defects in the female urogenital triangle after excision of malignant tumors.Methods:From January 2015 to December 2017, 10 female patients with malignant tumors of the urogenital triangle (7 cases of extramammary eczematoid carcinoma and 3 of squamous cell carcinoma) received peripheral Mohs micrographic surgery in Department of Dermatologic Surgery, The Seventh People′s Hospital of Shenyang. During the surgery, the perforator flaps pedicled on the internal pudendal artery were used to repair vulvar defects in 8 patients with unilateral defects and 2 with bilateral defects.Results:Among the 10 patients, all the 12 flaps survived; 2 patients developed surgical wound infections, but experienced complete healing after wound dressing change, and the other 8 patients all experienced primary healing of incisions. After 6 months to 1 year of follow-up, the vulvas were plump and highly elastic in all the patients, with no narrowing of the vaginal opening, obvious contractures of scars, or recurrence of tumors.Conclusion:The pudendal thigh flaps pedicled on the internal pudendal artery is markedly effective for repairing skin and soft tissue defects in the female urogenital triangle.

OBJECTIVETo analyze and identify the chemical ingredients in Sini San by LC-MS.

METHODThese compounds were analyzed with an ACQUITY UPLC BEH C18 (2.1 mm x 100 mm, 1.7 microm) by gradient elution of methyl cyanides and 0.1% formic acid. ESI source was used and data were collected in positive and negative mode.

RESULTSeventeen compounds of Sini San were identified by direct comparison in both positive and negative modes of Q-TOF-MS, the elemental compositions analysis, the standard substance and the data of the literature.

CONCLUSIONIt is a rapid and accurate method that the composition of compound prescription of traditional Chinese medicine can be identified in terms of the separation of ultra high performance liquid chromatography, the accurate molecurlar weights measured by MS and other information, which can trace to the source of compounds in Sinisan.