Objective To develop a new type of oxygen mask, which has adjustable vent and can be removable. Methods An adjustable and removable vent below the mask was added to the conventional mask, so the problem of taking off the mask for interrupted oxygen inhalation was solved. The change of the passage of the oxygen import and export could add comfort, keep away from the operation area of the neck,chest area, etc. The new mask had a filmy hole in each side which was for gastrointestinal drainage tubes,which increased tighmess. Results The new mask improved the effect of oxygen inhalation, added comfort to patients and was convenient for medical operation. Conclusions The mask is innovative and can be widely used in clinic.

OBJECTIVETo investigate the pathogen distribution and drug resistance in coal workers' pneumoconiosis associated with pneumonia and to provide a scientific basis for early guidance for rational clinical application of antibacterial agents.

METHODSSeventy-six patients with coal workers' pneumoconiosis associated with pneumonia who were admitted to our hospital from June 2011 to June 2014 were enrolled as subjects. The sputum specimens were aseptically collected for bacterial culture and drug sensitivity tests.

RESULTSIn 245 sputum specimens collected from 76 patients, a total of 218 strains of pathogens, including 163 strains of Gram-negative bacilli (74.77%), 39 strains of Gram-positive cocci (17.89%), and 16 strains of fungi (7.34%) were isolated by bacteriological tests. The main Gram-negative bacilli had high rates of resistance to amoxicillin/clavulanic acid, ampicillin, cotrimoxazole, cefotaxime, and aztreonam, and were sensitive to amikacin, imipenem, and meropenem. The main Gram-positive cocci had high rates of resistance to penicillin, erythromycin, amoxicillin/clavulanic acid, ampicillin, cefotaxime, and clindamycin, and were sensitive to vancomycin and teicoplanin.

CONCLUSIONThe main pathogens in these patients with coal workers' pneumoconiosis associated with pneumonia are Gram-negative bacilli, which are highly resistant to common clinically used antibacterial agents. The pathogen distribution and drug resistance should be well understood, and the antibacterial agents should be rationally selected according to the results of drug sensitivity tests.

Anthracosis ; microbiology ; Anti-Bacterial Agents ; pharmacology ; Coal Mining ; Drug Resistance, Bacterial ; Gram-Negative Bacteria ; drug effects ; Humans ; Imipenem ; pharmacology ; Microbial Sensitivity Tests ; Occupational Exposure ; adverse effects ; Pneumonia ; microbiology ; Thienamycins ; pharmacology

Objective To investigate the correlation of the 24?hour ambulatory systolic blood pressure (SBP) and carotid intima?media thickness(CIMT) in the elderly. Methods A total of 2 464 who were more than or equal to 60 years old participants were selected with random sampling in accordance with the inclusion criteria from the retired workers in Tangshan Kailuan Company. Dynamic blood pressure monitoring, neck vascular ultrasound and other examination were performed for the participants. . Multivariable linear regression analysis was used to analyze correlation between the SBP of 24?hour, daytime and nightime with CIMT, respectively. Results ( 1) The observation population was divided into three groups according to the tertiles of SBP of 24?hour, daytime and nightime, respectively. With the levels of different SBPs inceasing, CIMT values thickened markedly ( P<0. 01 ) . ( 2 ) Multivariable linear regression analysis showed that after adjusting for confounding factors,the SBP of 24?hour,daytime and nightime associated with CIMT positively and linearly(P<0. 05),and regression coefficient(95%CI) were 0. 022(0. 009-0. 035), 0. 021(0. 008-0. 035), 0. 019 ( 0. 006-0. 032) respectively. In addition,clinic SBP step into the multivariable linear regression,and regression coefficient ( 95%CI ) were 0. 016 ( 0. 003-0. 029 ) , 0. 016 ( 0. 003-0. 030 ) , 0. 019 ( 0. 007-0. 032 ) , respectively. Conclusion The effect of increased 24?hour ambulatory SBP on CIMT was greater than the clinic SBP. Active monitoring of 24 h ambulatory blood pressure and maintaining a low level of blood pressure is essential for preventing and delaying atherosclerosis.

Objective To explore the relationship between different blood glucose levels and new carotid artery plaques.Methods A total of 5 440 participants met the inclusion criteria were selected stratified randomly from the 101,510 serving and retired workers of Tangshan Kailuan Company who participated the health examination from 2006 to 2007.The follow-up health examination were respectively preformed from 2010 to 2011 and from 2012 to 2013 which included carotid ultrasound for these 5 440 participants.The 5 440 participants were divided into three groups (ideal blood glucose group,impaired fasting glucose group and diabetic group) according to their fasting glucose levels in 2010-2011 examination.Multivariate Logistic regression analysis was used to analyze the risk factors of new carotid artery plaques.Results Among 5 440 subjects,participants whose FPG,ultrasound data incomplete and ultrasound detection of carotid plaques during the 2010-2011 health examination were excluded,then 3 084 participants were included in this study,among them,175 participants who did not participate the 2012-2013 health examination and 561 participants whose carotid plaque ultrasound data incomplete were excluded.Thus,a total of 2 348 participants were included in the present analysis.The total detection of new carotid artery plaque rate was 15.0％ (352/2 348) after 2 years of follow-up.The detection of new carotid artery plaque rate in normal glucose group(n =1724),impaired fasting glucose group(n=464) and diabetic group(n=160) were 14.2％(245/1 724),14.9％(69/464) and 23.8％(38/160),respectively.The diabetic group was higher than that of the ideal blood glucose group and the impaired fasting glucose group,the difference was statistically significant(P＜0.05).Impaired fasting glucose group and diabetic group had an increased risk of new carotid artery plaque compared with those in ideal glucose group(OR =0.924,95％CI 0.691-1.235 and OR =1.733,95％CI 1.107-2.713,respectively),the difference was statistically significant(P＜0.05).After adjusted for the other risk factors,with the risk-adjusted ratio (OR =1.117,95％CI 0.824-1.513 and OR =1.393,95％CI 0.872-2.226).Conclusion The detection of new carotid artery plaque increase in the diabetic group.However,after adjustment for other risk factors associate with emerging danger of new carotid artery plaque is no significant difference.This requires more long-term follow-up study of a large sample to be further confirmed.

Objective To investigate the relationship among stressful life events ,social support and depression through researc‐hing a large number of Chinese army men ,then discovered the social psychological mechanism of the depression .Methods 11 ,400 officers and soldiers were tested with three scales ,the center for epidemiologic studies depression scale ,life events scale and social support scale .The differences between groups were determined with the variance ,SPSS 18 .0 software and AMOS7 .0 were used to analyse and build model .In addition ,we built the path model of life events and social support on depression with AMOS 7 .0 soft‐ware .Results (1)There is a significant positive correlation between Chinese soldiers depression levels and life events (r=0 .382 , P<0 .01) .(2) There is a significant negative correlation between Chinese soldiers depression levels and the social support (r= -0 .379 ,P<0 .01) .(3) It was established the path model of life events ,the social support and depressive symptom level .Con‐clusion Depressive symptom is related to the military life events ,which may predict the occurrence of the depression .Moreover ,so‐cial support ,a protective factor for mental health ,can relieve the depression of officers and men .

Objective:Iron accumulation is related to the occurrence of postmenopausal osteoporosis. Meanwhile, autophagy abnormality of bone marrow hematopoietic cells is observed in hip osteoporotic fracture. This study is performed to investigate correlation between iron accumulation induced bone loss and hematopoietic autophagy dysfunction to explore the new risk factor of osteoporosis.Methods:Male iron accumulation mice model was established by intraperitoneally injecting ferric ammonium citrate. Serum ferritin and osteogenic indicator P1NP were tested by ELISA. Bone mineral density was measured by micro-CT. Femur and tibia bone marrows were collected for hematopoietic stem and progenitor cells proportion and cell apoptosis analysis. Autolysosome formation was measured by image flow cytometry. We used conditional mouse model Atg7 flox/flox; Vav-Cre(Atg7 -/-) in which Atg7 had been genetically deleted in the hematopoietic system. Bone marrow hematopoietic stem and progenitor cells were collected for RNA sequence. micro-CT scan was conducted for Atg7 -/- femur. Results:Ferritin level of iron accumulation mice was significantly higher than control group( P<0.05). Iron accumulation inhibited P1NP and induced decreased bone mineral density( P<0.05). Iron accumulation bone marrow displayed enhanced hematopoietic stem and progenitor cells proportion( P<0.05), with more cell apoptosis( P<0.05). Hematopoietic autophagy was deteriorated in iron accumulation bone marrow. Transcriptomic profiling showed up-regulation of iron activity in Atg7 -/- mice, with increased iron homeostasis and iron membrane transporter genes, including Lcn2, Tfr2, Slc40a1(Fpn1), Steap3, and Cpox. micro-CT revealed severe bone loss and decreased bone mineral density in Atg7 -/- mice( P<0.05). Conclusion:Iron accumulation induced bone loss is related to inhibition of hematopoietic cells. Hematopoietic autophagy dysfunction is associated with bone loss.

Purpose/Significance To analyze the characteristics of organ representation of anatomical ontologies,and to provide ref-erences for the research and construction of ontology in other fields.Method/Process The similarities and differences of three mainstream anatomical ontologies of SNOMED CT(SCT),Uberon and the foundational model of anatomy ontology(FMA)in terms of organ classifi-cation methods and term mapping are compared.Result/Conclusion Among the three main types of anatomical ontologies,SCT and Uberon are mainly classified according to the function of organs,while FMA is mainly classified according to the anatomical morphology of organs.The concept of organs in FMA and Uberon is the same as the concept of entire organs in SCT,and the representation forms of paired organs in SCT,Uberon and FMA are similar.

Objective:To study the risk factors of hemodynamically significant patent ductus arteriosus (hsPDA) in extremely preterm infants (EPI).Method:From July 2017 to April 2020, EPI (gestational age <28 weeks) admitted to the Department of Neonatology of our hospital were included and analyzed retrospectively. According to whether hsPDA existed or not, the infants were assigned into non-hsPDA group and hsPDA group. Demographic findings and possible risk factors of hsPDA were collected.The cumulative fluid overload (FO) within 3 days after birth was calculated. Univariate and multivariate analysis were used to determine the risk factors of hsPDA.Result:A total of 79 infants with gestational age of (27.0±0.9) weeks and birth weight of (987±173)g were enrolled, including 23 cases in non-hsPDA group and 56 cases in hsPDA group. Univariate analysis showed that thrombocytopenia ( P=0.044), respiratory distress syndrome (RDS) treated with pulmonary surfactant (PS) ( P=0.006) and high FO level ( P=0.002) were associated with hsPDA. Multivariate analysis showed that RDS treated with PS ( OR=5.933, 95% CI 1.360~25.883, P=0.018) and high FO level ( OR=1.261, 95% CI 1.063~1.496, P=0.008) were independent risk factors for hsPDA in EPIs. ROC curve analysis showed that the cut-off value of FO was -0.2%, with 85.7% sensitivity and 56.5% specificity distinguishing the presence of hsPDA (AUC=0.712, Youden index=0.422). Conclusion:High level of FO within the first 3 days of life and RDS treated with PS are independent risk factors for hsPDA in EPI. After PS treatment, hemodynamic changes of infants with RDS should be monitored closely. During early fluid management of EPI, FO should be strictly monitored to avoid high FO level.

Objective:Based on Web of Science database, this study aimed to explore the current status, research hotspots and development trends of countries regarding clinical management of osteoporotic fractures using bibliometrics and visualized analysis.Methods:We collected literatures in the field of clinical management of osteoporotic fractures included in Web of Science database, and applied bibliometrics to analyze the publication dates, countries, institutions, journals, authors, highly cited literatures and research hotspots. Visualization was drawn by VOSviewer software.Results:Analysis of the 2 508 articles revealed 3 types of data. (1) The analysis of basic information of the literature showed that: ①The country with the largest number of publications was the United States, which published 672 articles, followed by the United Kingdom and Canada, and China ranked fourth; ②The top three authors in the number of publications were Kanis JA, Cooper C and McCloskey EV respectively; ③The institution with the highest number of publications was the University of Sheffield, UK, followed by the University of Southampton, UK and the University of Toronto, Canada. (2) Network visualization of highly cited literatures showed that 118 highly cited literatures were mainly divided into 5 clusters, which were related to osteoporotic fracture diagnosis, treatment, medication adherence, management consensus and strategies of preventing refracture. (3) Temporal overlay visualization of research hotspots showed that early research mainly focused on traditional therapeutic drugs, and current research hotspots were mainly molecular targeted drugs, trabecular bone score and fracture liaison services.Conclusion:This study shows that the research activity of clinical management of osteoporotic fractures is increasing worldwide, and there is still a huge gap between China and Europe or the United States. Current research hotspots and development trends mainly focus on molecular targeted drugs, osteoporotic fracture treatment concepts, emerging fracture risk assessment tools, and fracture prevention and management models.

Objective:To study the medication rules of treating cervical spondylosis by National TCM master Liu Bailing based on data mining and network pharmacology, and explore the potential action mechanism of its core compounds.Methods:By collecting the prescriptions of National TCM master Liu Bailing treating cervical spondylosis in the past 8 years, this paper analyses the frequency, nature, flavor, meridian, hierarchical clustering and association rules of those prescriptions by RStudio to obtain the core prescription. Then, the effective components of the core prescription were collected by using TCMSP, and the network of "medicine-component-target" was constructed by using Cytoscape 3.8.0; by searching for databases like GEO, DisGeNET, TTD HPO and Genecards were retrieved to obtain the target data set of cervical spondylosis; by using STRING 11.0 platform to construct protein interaction network; by using DAVID platform to cary out gene ontology (GO) and KEGG pathway enrichment analysis; by using Auto Dock software for molecular docking.Results:In the 844 prescriptions, there are 199 Chinese medicines and the properties are mainly warm, plain and cold; the flavors were mainly sweet, pungent and bitter; mainly belong to the liver, spleen, and kidney meridians. The Association Rule shows that the core compound is made up of Salvia miltiorrhiza, Gastrodia elata, Rhizoma corydalis, Alisma rhizoma, centipede, Astragalus membranaceus and Rhizome of Pueraria. Besides, 140 effective constituents and 247 targets of the core prescription were screened, and the main constituents were quercetin, kamanol, luteolin, tanshinone ⅡA, β-sitosterol, etc. 13 core targets among the core prescription treating cervical spondylosis were obtained, which were enriched into 30 pathways including toll-like receptor signaling pathway, TNF signaling pathway and HIF-1 signaling pathway. Conclusion:National TCM master Liu Bailing treatment of cervical spondylosis mainly focuses on expelling wind and relieving pain, dredging meridians and soothing tendons, and the mechanism of action of the core prescription may focus on inhibiting inflammatory response and relieving oxidative stress, providing guidance and reference for the clinical treatment of cervical spondylosis.