Cognitive decline is one of the most common adverse symptoms following acute high-altitude exposure(AHAE).MRI can reveal the structural and functional changes in brain caused by AHAE,thereby deeply understanding the specific mechanism of its cognitive decline,which is of great significance for early prevention and intervention.Research progresses on MRI assessment of cognitive function after AHAE and related intervention methods were reviewed in this article.

Cognitive decline is one of the most common adverse symptoms following acute high-altitude exposure(AHAE).MRI can reveal the structural and functional changes in brain caused by AHAE,thereby deeply understanding the specific mechanism of its cognitive decline,which is of great significance for early prevention and intervention.Research progresses on MRI assessment of cognitive function after AHAE and related intervention methods were reviewed in this article.

Objective:To perform principal component analysis on the status quo of nurses' research ability, and explore the status quo of their relevant research needs.Methods:In this cross-sectional study, totally 588 clinical nurses working in a children's hospital in Hunan Province from July to December 2019 were selected by stratified random sampling and investigated with the self-designed questionnaire. The survey content included three parts: the first part was general information; the second part was the survey of the status quo of nurses' research ability; the third part was the survey of the status quo of nurses' research needs. A total of 588 questionnaires were distributed, and 577 questionnaires were collected, accounting for an effective recovery rate of 98.13%.Results:The three items with the higher scores in the survey of research ability status were frequently search for professional materials through the Internet (3.255±0.491) scores, able to perform statistical description (2.931±0.572) scores and able to use Chinese database (2.894±0.429) scores. The three items with the higher need for research ability were project application 80.94% (467/577) , paper writing 76.95% (444/577) and special lecture 71.92% (415/577) , whereas the three items with the lower need for research ability were continuing learning 46.10% (266/577) , retrieving documents 40.90% (236/577) and group symposium 38.30% (211/577) .Conclusions:Nursing staff has relatively good ability in information retrieval and basic statistics, but relatively poor ability in paper writing. The research ability of nurses can be summarized as statistical analysis ability, information retrieval/document reading ability, research topic selection ability and paper writing ability. Attention should be paid to whether there are high research needs in the weak links of research ability, and nursing research guidance and education should be provided purposively.

?? [Abstract]? Objective? To deeply explore the care needs in parents of children with congenital pseudarthrosis of the tibia (CPT) during Ilizarov fixation. Methods? Totally 10 parents of CPT children during Ilizarov fixation hospitalized in the Department of Orthopedics, Hu'nan Children's Hospital between March and December 2017 were selected using purposive sampling and received semi-structural interview. Colaizzi phenomenological methods were used to analyze the data. Results? Totally 4 themes were refined, including informational support needs (needle way care, functional exercise and feeding), psychological support needs, economic support needs, and children's educational support needs. Conclusions? The parents of CPT children during Ilizarov fixation have many care needs. Nursing workers should pay attention to their needs and take targeted measures to accelerate the postoperative recovery of children.

Objective To explore effective methods to improve specialized nurses' professional ability and standardize the post management. Methods Since 2015, Hu'nan Children's Hospital has adopted the the three-level (including the national, provincial and hospital level) specialized nurses training and management program to cultivate the hospital-level specialized nurses in neonatology, intensive care, infection and other departments. The training program was carried out in three-level, including the whole hospital, big departments and their own department (small departments). The assessment of the program also covered three parts, including the specialized theoretical knowledge, technical and academic competence. From 2015 to 2016, the professional academic ability and the development of professional technique were censused. The development speed with link relative method and the comparative growth on moving base of specialized nurses' academic and technical competence were calculated. At the same time transfer rate of specialized nurses was censused. Results The qualification rate of 202 hospital-level nurses reached 95.5% in 2015, and that of 244 nurses reached 96.7% in 2016. Over the past two years, the specialized nurses have been responsible for the hospital-level nursing rounds and consultation for 11 times and the department-level nursing ward rounds for 209 times. A total of 19 new technique projects have been approved by the hospital, and 7 hospital-level and above-hospital-level projects have been set up. The number of the overview published have reached 153 and that of published scientific articles beyond the hospital was 231. Conclusions The three-level (including the national, provincial and hospital level) training and post management program of specialized nurses can effectively improve the ability of specialized nurses from the children's hospitals, promote the stability of specialized nursing team, and guarantee the improvement of the quality and influence of specialized nursing.

Objective Baseline investigation was conducted on the current situation of intravenous infusion treatment in a Class Ⅲ Grade A children's hospital in Hu'nan Province, and the quality improvement was carried out according to the investigation results, and explored the quality improvement effect. Methods The baseline investigation on intravenous infusion treatment was conducted in a Class Ⅲ Grade A children's hospital in Hu'nan Province in September 2016. A total of 558 children from 18 clinical departments were selected as research subjects by random number table method. Quality improvement was carried out according to the survey results. A total of 1 088 cases of children undergoing intravenous treatment were investigated for the second round in September 2017. The infusion site, puncture tool, catheter fixation, catheter related complications, catheter maintenance and connection mode were compared before and after quality improvement. Results The selection of infusion sites before and after quality improvement meets the requirements. The usage rate of indwelling needle increased from 88.5% to 94.4%, and the usage rate of spiral joint increased from 56.6% to 73.8%. Both the differences were statistically significant (χ2=78.38, 50.0;P＜0.05). After quality improvement, the incidence of catheter missing was decreased from 92.5% to 82.5% when nurses performed catheter maintenance, with statistical significance (χ2=30.1,P＜0.05). Conclusions By practicing standards for clinical venous treatment, strengthening training, and carrying out process quality control, the quality of work for nursing staff in the selection of infusion tools and the control of complications of indwelling catheters has been significantly improved.

Objective To analyze the relationship among serum hepatitis B virus (HBV ) envelope large protein (HBV‐LP ) , HBV‐DNA and HBV marker(HBV‐M ) for investigating the clinical significance of HBV‐LP to reflect the HBV in vivo replication in the patients with HBV infection .Methods Total 540 cases of chronic HBV infection treated in the Longgang District Hospital of Traditional Chinese Medicine from April 2013 to September 2015 were selected .The real‐time fluorescence quantitative PCR meth‐od was used to detect serum HBV‐DNA ,HBV‐LP and HBV‐M were detected by the enzyme linked immunosorbent assay (ELISA) . The correlation among HBV‐LP ,HBV‐M and HBV‐DNA were analyzed .Results The positive rate of HBV‐LP in HBeAg‐positive patients was 96 .39% ,and which of HBV‐DNA was 93 .33% ,there was no statistically significant difference between them (P>0 .05);The serum HBV‐LP level was positively related with the logarithmic value of HBV‐DNA copies ;the positive rate of HBV‐LP in HBeAg‐negative patients was 63 .33% ,and which of HBV‐DNA was 51 .11% ,the difference between them was statistically significant(P<0 .05) .Conclusion HBV‐LP can effectively reflect the HBV in vivo replication in the patients with chronic hepatitis B and its sensitivity is higher than that of HBeAg ,HBV‐LP can even more reflect the HBV in vivo replication status in patients with HBeAg‐negative chronic hepatitis B .

Objective To study the differences in intestinal flora of normal and type 2 diabetic mice, the effect of alcoholic extract of Coreopsis tinctoria Nutt on mouse intestinal flora, and explore the possible relationship between alcoholic extract of Coreopsis tinctoria Nutt, intestinal flora and type 2 diabetes mellitus (T2DM) in mice.Methods Stool samples were collected from the normal control group (A), high dose (1.8 g/kg) (B) and moderate dose (1.2 g/kg) (C) alco-holic extract of Coreopsis tinctoria Nutt model groups, metformin (0.2 g/kg) treatment group (D) and blank control (E) group.16S rDNA real-time quantitative PCR assay was used to determine the levels of Clostridium coccoides and Bacteroides thetaiotaomicron in the stool samples.Pearson analysis method was used to analyze the correlation between the levels of tar-get bacterial species and the fasting blood glucose ( FBG) in the mice.Results 1.Compared with the normal control group, the levels of Clostridium coccoides and Bacteroides thetaiotaomicron in the T2DM model group were significantly low-ered (P=0.017, P=0.002).2.Compared with the model group, the levels of Clostridium coccoides and Bacteroides the-taiotaomicron of the high dose Coreopsis tinctoria Nutt alcohol extract group were significantly different ( 2 weeks: P =0.027, P=0.006;4 weeks:P=0.007, P=0.012).3.The levels of Clostridium coccoides and Bacteroides thetaiotaomi-cron were positively correlated with the FBG level in the mice.Conclusions The alcohol extract of Coreopsis tinctoria Nutt has certain effect on the intestinal flora in type 2 diabetic mice and there is certain correlation between the effect of alcohol extract of Coreopsis tinctoria Nutt and their blood glucose level.

Objective To investigate the related knowledge and behavior attitude towards 129 pediatric nurses about the family-centered care (FCC). Methods FCC questionnaires were provided among 129 pediatric nurses in Hu′ nan province, teaching training was carried out based on the questionnaires, and twice questionnaires were reopened after teaching training. Cognition and attitude were compared before and after teaching training. Results The rate of concepts, purpose, and characters of FCC had been raised to 100% . Among the trainee, 93. 8% nurses wanted to continue FCC training program, 74. 42% nurses were willing to read the FCC relative information including newspapers, references and books. Conclusions It is very necessary to carry out FCC which can improve knowledge level of FCC and transform the concept of nursing.

OBJECTIVE[corrected] To understand the role of miRNA-146a in the proliferation and migration of primarily cultured rat vascular smooth muscle cells (VSMCs) and investigate the mechanisms.

METHODSPrimarily cultured rat VSMCs were transfected with a synthesized miRNA-146 inhibitor, a scramble sequence or PBS via Lipofectamine2000. Cell counting kit 8 (CCK8) and transwell assay were employed to assess the proliferation and migration of the transfected cells, and the expressions of nuclear factor-κB p65 (NF-κBp65) and proliferation cell nuclear antigen (PCNA) were detected using Western blotting.

RESULTSA 48-h transfection of the VSMCs with miRNA-146 inhibitor caused significantly lowered miRNA-146a expression as compared with that in VSMCs transfected with the scramble sequence or PBS (P<0.01), resulting also in lowered proliferative and migration ability of the cells (P<0.01). The expression levels of NF-κBp65 and PCNA were remarkably lower in cells transfected with miRNA-146 inhibitor than in the cells in the other two groups (P<0.05).

CONCLUSIONmiRNA-146a is capable of promoting the proliferation and migration of rat VMSCs probably by enhancing the expression of NF-κBp65.

Animals ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Male ; MicroRNAs ; antagonists & inhibitors ; genetics ; Muscle, Smooth, Vascular ; cytology ; drug effects ; metabolism ; Myocytes, Smooth Muscle ; drug effects ; metabolism ; Primary Cell Culture ; Proliferating Cell Nuclear Antigen ; genetics ; metabolism ; Rats ; Rats, Sprague-Dawley ; Transcription Factor RelA ; genetics ; metabolism ; Transfection