Objective To provide references foroptimizing the structure of human resourcesby investigating human resource development and the current situation of allocation in the hospital .Methods Descriptive statistical a-nalysis and Spearman rank correlation analysis were conducted on the data of human resource in the hospital from 2004 to 2013 and the situation of personnel allocation in the hospital at the end of 2013 was emphatically analyzed by the statistical description.Results The development of the total human resource from 2004 to 2013was adapted to the hospital development , but the development of staff at each positionwas at unbalance .The nursingstaff wasin short . The educational background structure of all kinds of positions was reasonable , but thestructure of professional titleswas unreasonable , without developing into talents team .Moreover ,the non-permanently-contracted staff took up a lar-ger proportion .Conclusion Hospitals need to achieve comprehensive development of human resource by setting up scientific conception of talents ,to improve the quantity and quality of nursing staff by enhancing nursing staff construc -tion, to forming an reasonable talent team by balancing the structure of personnel quality , and to stabilize the hospital staff structure by attaching importance to the management of non -permanently contracted staff .

OBJECTIVE: To study the effect of Zhenju Jiangya Tablet (ZJ) on the injured endothelial cells and endothelium-dependent relaxation function of hyperlipidemia rabbits. METHODS: Male New Zealand rabbits were randomized into four groups: control group, hyperlipidemia group, ZJ group and sivastatin group. The endothelium-dependent relaxation function was evaluated by APV using intravascular Doppler, and the morphology of endothelial cells was detected by light microscopy and electron microscopy, and nitric oxide synthase was evaluated. RESULTS: ZJ reduced the lesions of hyperlipidemia vessels, and the APV after Ach injection of each group was (1.14+/-0.26), (1.74+/-0.59), (1.22+/-0.37) and (1.17+/-0.41) respectively. The eNOS of each group was (4.21+/-0.37), (1.43+/-0.88), (3.95+/-0.67) and (4.08+/-0.46) nmol x min(-1) x g(-1) respectively. CONCLUSION: ZJ can improve the abnormality of endothelial cells and endothelium-dependent relaxation function of hyperlipidemia.

Objective To evaluate the effect of modified Maze lines plus pulmonary vein (PV) isolation created by radiofrequency catheter ablation (RFCA) on atrial wall guided by a novel geometry mapping system in the treatment of elderly patients with paroxysmal atrial fibrillation (PAF). Methods After regular electrophysiological study, transseptal punctures were achieved twice with Swartz L1 and R1 sheaths. PV angiographies were conducted to evaluate their orifices and branches. A balloon electrode array catheter with 64 electrodes was put in the middle of the left atrium. Atrium geometry was constructed using Ensite 3000 Navx system. Two RFCA lesion loops and three lines (modified Maze) were created on left and right atrial walls. Each lesion point was ablated for 30 seconds with preset temperature 50 (ae) and energy 30W. The disappearance or 80% decrease of the amplitude of target atrial potential and 10 to 20(|), decrease of ablation impedance were used as an index of effective ablation. Results A total of 11 patients (7 male and 4 female, mean age, 68.7±5.1 years) were enrolled. PAF history was 7.9±4.5 years. PAF could not be prevented by mean 3.1±1.6 antiarrhythmic agents in 6.3±3.4 years. None of the patients had complications with structural heart disease or stroke. Left atrial diameter was 41.3±3.6 mm and LVEF was 59.2±3.7% on echocardiography. Two loops and three lines were completed with 67.8±13.1 (73-167) lesion points. Altogether 76-168 (89.4±15.3) lesion points were created in each patient. PAF could not be provoked by rapid burst pacing up to 600 beat per minute delivered from paroxysmal coronary sinus electrode pair.Complete PV electrical isolation was confirmed by three-dimensional activation mapping. Mean procedure time was 2.7±0.6 hours and fluoroscopy time was 17.8±9.4 minutes. Patients were discharged with oral aspirin and without antiarrhythmic agents. During follow up of 6.5±1.8 months, seven patients were PAF symptom free (63.6%). PAF attacks were decreased more than 70% in two patients (18.2%). PAF frequency did not change in another two patients (18.2%). Conclusions Ensite 3000 Navx guided modified Maze lines plus PV isolation on the atrial wall is safe and feasible in the elderly patients. It has the advantages of exact procedural endpoint, shorter X-ray exposure, fewer complications and satisfied long-term effect PAF control.

PurposeTo assess the level of agreement and interchangeability among Excel and CMRtools (2012) for calculation of T2* values in iron overload.Materials and Methods T2* images in 27 cases withβ-thalassemia major were imported into CMRtools (2012). The regions of interest (ROI) were drawn and interference signal removed to obtain T2* values. The T2* images were also measured using default MR software and manually entered into Excel to obtain T2* values after removal of the interference signal. The agreement between the two methods in calculating T2* values was compared.Results For 27 patients withβ-thalassemia major, 10 cases showed myocardial iron overload. 25 cases had liver iron overload. The T2* values from two methods were not statistically significant (t=-0.152 and-0.691,P>0.05) for the liver.Conclusion There is good agreement and interchangeability between Excel and CMRtools (2012) in calculating T2* values. Excel can be used clinically to evaluate iron overload.

In this paper, a biodynamic model of human upper-body in the seated posture is developed. Based on d'Alembert's principle, the non-linear biodynamic equation of the modelling is derivated. Furthermore, the function of frequency and amplitude of modelling is obtained by employing the KB method in the non-linear theory. The response of realistic human parameters and the external stimulus on the modelling is simulated by MATLAB. The results show that the modelling presents a plenty of non-linear characteristics. The parameters identified and the stable areas to keep the stabilization of upper-body in the seated posture are discussed. These data can be used to explain and estimate the mechanism for the maintenance of stable trunk posture due to the mechanical shocks transmitted through the vehicle seat.
Automobile Driving ; Biomechanical Phenomena ; Humans ; Low Back Pain ; etiology ; Models, Biological ; Nonlinear Dynamics ; Posture ; physiology ; Spine ; physiology ; Vibration

Objective To investigate clinical features and antifungal therapeutic effect of chronic severe hepatitis (CSH) patients with invasive fungal infection (IFI), and to improve the diagnosis and treatment.Methods Clinical manifestation, blood routine, imageology and mycetology characteristic, antifungal treatment perscription and therapeutic effect of 79 CSH patients with IFI were retrospectively analyzed. Antifungal therapeutic effect was compared between fluconazole and voriconazole. Results Thirteen (16.5%) patients received glucocorticoid or other immunodepressants for a relatively long time, 40 (50.6%) patients had invasive operation, and 61 (77.2 %) patients were administered 1-6 kinds of broad-spectrum antibiotics. Seventy-three patients had fever. Leucocytes and neutrophilic granulocyte increased in 96.2% of the patients. Lung (31.6%), intestinal tract (26.2%) and oral cavity (14%) infections were common. Fungus was found in 70.9% of the patients. Candida albicans (40.9%) and aspergillus (21.1%) were often seen. Halo signs and crescent signs on lung CT were relatively specific in 40% of the patients with fungal pneumonia. Voriconazole was more effective than fluconazole(71.4% vs. 39.0%, P<0.05). Twelve patients with lung aspergillus infection were administered voriconazole, 8 (66.7%) patients of whom was effective, and the other 4 (33.3%) patients died. Conclusion There are high risk factors in major CSH patients with IFI. The most common clinical manifestations of CSH patients with IFI are fever, leukocytosis, lung and intestinal tract infection. Candida albicans and aspergillus infection are common. Voriconazole is more effective than fluconazole, and can increase the survival rate of CSH patients with IFI.

This article summarizes the experience in the teaching model of flipped classroom combined with group learning in the course of biostatistics in Duke University and discusses the application of this teaching model in universities and colleges in China.The study results show that this teaching model introduces group learning in flipped classroom to develop continuous peer-assisted learning.Meanwhile,this teaching model follows the process of knowledge internalization and designs four successive steps of individual readiness assessment,team readiness assessment,mini-lectures,and application activity,in order to strengthen the understanding and practical application of key points.This teaching model also establishes a transparent mechanism for individual and curriculum evaluation and feedback collection to find and solve the issues in this course.These teaching experiences provide a good reference for the application of flipped classroom in large-class teaching in China.

Objective To investigate the value of antineutrophil cytoplasmic antibody (ANCA) in clinical phenotype of eosinophilic granulomatosis with polyangiitis (EGPA).Methods The clinical data of 64 patients with EGPA from Peking Union Medical College Hospital between 2007 to 2016 were retrospectively analyzed,and the patients were followed up.Characteristics of patients with ANCA positive and ANCA negative were compared by independent-samples t test,Mann-Whitney U test and Chi-square test.Results Among 64 patients with EGPA,12(19％) were serum ANCA positive and 52(81％) were negative.The incidence of fever (77％ vs 35％,x2=9.403,P=0.002) and renal involvement,including proteinuria (67％ vs 25％,x2=7.678,P=0.006),hematuria (58％ vs 8％,x2=17.57,P＜0.01),renal inadequacy (33％ vs 4％,x2=9.978,P=0.002),and the BVAS score higher than 15 (92％ vs 60％,x2=4.440,P=0.035) in ANCA positive group were higher than ANCA negative group,while the presence of allergic rhinitis (17％ vs 56％,x2=5.969,P=0.015),mucocutaneous lesion (33％ vs 65％,x2=4.152,P=0.042) and cardiac involvement (8％ vs 44％,x2=3.361,P=0.021) in the ANCA-positive group was lower when compared with ANCA-negative patients.The positive ratio of rheumatoid factor (RF) (100％ vs 42％,x2=7.723,P=0.006),and the level of erythrocyte sedimentation rate (ESR) (50 vs 35.5 mm/1 h,P=0.034) in ANCA-positive group were higher than in ANCA negative group.There was no significant difference in pathological characteristics between the two groups.According to the treatment and prognosis,there were no significant differences between the two groups in the usage and dosage of steroids and immunosuppressant,the remission rate and recurrence rate of the disease,and the death rate due to the primary disease.Conclusion The clinical manifestations of EGPA are complicate.Whether ANCA is positive or not may be related to the clinical phenotypes.More attention should be paid to renal involvement in ANCA positive patients while cardiac involvement in ANCA negative patients.

Objective:To investigate the effects of breast milk to total milk intake ratio during hospitalization on the duration of antibiotic therapy in preterm infants less than 34 weeks of gestation.Methods:Clinical data of preterm infants ( n=1 792) less than 34 gestational weeks were retrospectively collected in 16 hospitals of Jiangsu Province Neonatal-Perinatal Cooperation Network from January 1, 2019, to December 31, 2021. The days of therapy (DOT) were used to evaluate the duration of antibiotic administration. The median DOT was 15.0 d (7.0-27.0 d). The patients were divided into four groups based on the quartiles of DOT: Q 1 (DOT≤7.0 d), Q 2 (7.0 d27.0 d) groups. According to the breast milk intake ratio (breast milk intake to total milk intake during hospitalization×100%), they were also divided into four groups: very-low-ratio breastfeeding group (breast milk intake ratio≤25%), low-ratio breastfeeding group (25%75%). Univariate analysis ( Chi-square test and Kruskal-Wallis rank-sum test) was used to analyze the factors influencing DOT. Spearman correlation analysis and trend Chi-square test were used to explore the relationship between breast milk intake ratio and DOT. After using multiple imputations to address missing data, two models were constructed after adjusting for different factors, and multinomial logistic regression model was applied to evaluate the effects of the breast milk intake ratio on DOT. Finally, sensitivity analysis was conducted to assess the stability of the models. Results:(1) Of the 1 792 preterm infants, there were 507 (28.3%) in the Q 1 group, 422 (23.5%) in the Q 2 group, 438 (24.4%) in the Q 3 group and 425 (23.7%) in the Q 4 group. (2) The median values of DOT in the very-low-ratio, low-ratio, medium-ratio and high-ratio breastfeeding groups were 20.0 d (11.0-31.0 d), 20.0 d (11.0-32.0 d), 13.0 d (6.0-25.8 d) and 10.0 d (4.0-21.0 d), respectively. Compared with the very-low-ratio and low-ratio breastfeeding groups, the medium-ratio and high-ratio breastfeeding groups had shorter DOT (all P<0.05). (3) After adjusting for factors with P<0.1 (prenatal glucocorticoid exposure, antimicrobial use within 24 h before delivery, gestational age at delivery, birth weight, Apgar score≤7 at 1 min, neonatal respiratory distress syndrome, infectious pneumonia and early-onset neonatal sepsis) between the DOT quartile groups, it showed that medium-ratio and high-ratio breastfeeding were protective factors in contrast to very-low-ratio breastfeeding in the Q 2, Q 3 and Q 4 groups as compared with the Q 1 group [Q 2 group: OR=0.50 (95% CI: 0.30-0.85) and OR=0.36 (95% CI: 0.26-0.51); Q 3 group: OR=0.31 (95% CI: 0.18-0.55) and OR=0.20 (95% CI: 0.14-0.29); Q 4 group: OR=0.22 (95% CI: 0.12-0.42) and OR=0.17 (95% CI: 0.12-0.26)]. Conclusion:Breast milk intake accounting for over 50% of total milk intake has a positive impact on reducing DOT in premature infants requiring antibiotics, which suggests that breastfeeding should be actively encouraged.