AIM: To analyze gait of patients undergoing total knee arthroplasty by three-dimensional (3D) biomechanical approach. METHODS: Fifty-three patients undergoing total knee arthroplasty were selected from Zhongshan Hospital of Dalian University between November 2005 and November 2006, with average age of 59.2 years (range, 42-82 years). The subjects consisted of 33 males with average height of (172?13) cm and body mass of (64?11) kg, and 20 females with average height of (155?11) cm and body mass of (45?1l) kg. All patients were evaluated by 3D gait analysis motion analysis system (DVMC-8801), of which three step lengths at constant gait speed were measured. Sixteen points were set up around hip, knee and ankle and connected to build up 3D dynamic image. RESULTS: Gait speed, gait frequency, step length and affected limb standing phase were all significantly improved postoperatively (P

Co-citations of foreign and domestic highly cited papers on drug target discovery were analyzed by clustering analysis using BICOMB2.01 and gCLUTO.Semantic analysis of the titles and abstracts in these highly cited papers and their important source literature showed that general trend, theoretical foundation, main methods and principal resources are the major hotspots of text mining in drug target discovery.

As a branch of natural science,medical science also contains abundant humanities ideas.'Medicine is a human course' and 'medicine is a kind technology ' embody the humanity evaluation of medical science from western and Chinese cultural history of medical science respectively.The humanities education in medical universities should take the medical science humanities spirit as educational principle,and pay attention to the course design,teacher installment,instructional reform,and evaluating system.

Objective To observe the application effect of critical care professional nursing team applied to sequential mechanical ventilation in the treatment of chronic obstructive pulmonary disease (COPD) with respiratory failure. Methods Totally 80 patients of COPD with respiratory failure from May 2014 to April 2015 were divided into study group and control group by random number table method, 40 patients in each group. Study group was applied to critical care professional nursing team. Control group was given routine nursing. The two groups were treated for 4 weeks. The clinical indicators of positive end expiratory pressure (PEEP), pressure support ventilation (PSV), carbon dioxide partial pressure (PaCO2), oxygen partial pressure (PaO2), forced expiratory volume in one second (FEV1), heart rate, arterial systolic blood pressure, respiratory rate in two groups were compared. The clinical indicators such as the duration of the stay, the duration of the total ventilation, and the time of invasive ventilation, etc, in two groups were compared;and nursing satisfaction was also compared. Results Before nursing, there were no statistical differences between the study group and the control group in PaCO2, PaO2, FEV1, heart rate, systolic arterial blood pressure, respiration rate and PEEP, PSV indicators (t=0.04-0.63, P>0.05). And after the intervention, the above indicators of the study group were (36.4±2.0) mmHg (1 mmHg=0.133 kPa), (94.7± 4.8) mmHg, (45.2 ± 16.0) %, (84.2 ± 4.3) beats/min, (94.2 ± 5.3) mmHg, (15.2 ± 3.0) times/min, (3.6 ± 1.2) mmHg, (10.2 ± 2.0) ml and (48.5 ± 5.3) mmHg, (88.3 ± 4.1) mmHg, (36.9 ± 14.1)%, (92.4 ± 6.2) beats/min, (110.4 ± 6.2) mmHg, (20.9 ± 4.1) times/min, (4.2 ± 1.6) mmHg, (13.9 ± 2.4) ml in the control group. The differences were statistically significant (t=4.37-13.51, P<0.01). After nursing care, the study group of patients with clinical indicators such as admission time, total duration of ventilation, the time of invasive ventilation were (12.5±1.5) d,(10.2±2.6) h,(5.2±2.1) h,while (18.2±2.6) d,(15.9±1.1) h,(7.9±2.9) h in the control group, the differences were statistically significant (t=12.01, 12.77, 4.77, P<0.01).The nursing satisfaction rate was 80.0% (32/40) in the study group while 62.5% (25/40) in the control group, the difference was statistically significant (χ2=6.30, P < 0.01). Conclusions Sequential mechanical ventilation therapy and nursing care in patients with COPD can significantly improve the clinical symptoms, improve nursing satisfaction, it is worthy of clinical promotion.

The data of pediatric patients who required sedation for non-invasive examinations, aged 1 day-13 yr, were retrospectively collected from December 2019 to June 2020.They are divided into 4 groups according to age: newborn (age 0-28 days) group, infant (age 29 day-1 yr) group, toddler (age 1-3 yr) group, and child (age 4-13 yr) group.Chloral hydrate 50 mg/kg was administrated orally.When the Ramsay score was ≤ 4 points at 30 min after administration, oral chloral hydrate 25 mg/kg or intranasal midazolam 0.1 mg/kg or intranasal dexmedetomidine 1 μg/kg was given as rescue administration.If the Ramsay score was still ≤ 4 points at 30 min after rescue administration, the examination was rescheduled or rescue drugs were given again by the anesthesiologists according to the condition and the urgency of the examination, with the number of administration not exceeding 3 times.The sedation failure was defined that the patients could not complete the diagnostic procedures after administration due to various reasons (including severe respiratory depression, rescheduled examination, parents' refusal to rescue administration, and Ramsay score still ≤ 4 points after 3 times of administration). The success of sedation at first attempt, success of rescue sedation and success of total sedation were recorded.The occurrence of sedation-related adverse events such as coughing, vomiting, allergies and respiratory depression was recorded.Compared with neonate group, the success rate of sedation at first attempt and success rate of total sedation were significantly increased, the incidence of sedation-related adverse events was decreased in infant, toddler and child groups ( P<0.01). There was no significant difference in the parameters mentioned above among infant group, toddler group and child group ( P>0.05). In conclusion, the efficacy of chloral hydrate for sedation is not good when used in neonates undergoing non-invasive diagnostic procedures.

AIM: To observe the application of Suresight handheld auto- refractometer in measuring diopter of infants in Community Health Service Center.
METHODS:Totally 836 cases ( 1 672 eyes ) from June 2013 to December 2013 were examined diopter of infants by Suresight handheld auto-refractometer in Community Health Service Center.
RESULTS: Within 1 672 eyes of 836 infants were examined, 202 eyes were diagnosed ametropia, 38 eyes were suspicious, 240 eyes were transferred to the department of ophthalmology, the referral rate was 14.35%; 172 eyes were diagnosed ametropia, and the diagnosis rate of the referral patients was 71. 67%. Among 172 eyes, 46 eyes were provided with corrected glasses, accounting for 2. 75% of the number of screening, and 126 eyes were given intensive monitoring, accounting for 7.54% of the number of screening.
CONCLUSION: Application of Suresight handheld auto-refractometer in refraction screening for infants in Community Health Service Center is convenient and effective. With two - way referral between community health service center and department of ophthalmology can monitor and intervene vision development of infants much earlier.

Diabetes mellitus is a metabolic syndrome characterized by hyperglycemia, and is caused by complex interaction between genetic and environmental factors. Diabetes mellitus can lead to various ocular surface disorders, including dry eye, superficial punctuatekeratitis, corneal epithelial defects, and recurrent corneal erosion et al. This review focuses on the domestic and overseas research progress on dry eye in diabetics.

Obiective To discuss influence of psychological intervention on compliance improvement of patients with liver cirrhosis.Methods Patients with liver cirrhosis(100 cases)were divided in to the experimental group and the control group with 50 cases in each group.The control group received routine nursing.The experimental group and their family members were given systemic psychological in tervention by responsibility nudes.The treatment effect after nursing and intervention in the two groups was compared.Results The compliance of the experimental group was better than that of the control group,P＜0.05,which had statistical difference.Conclusions Implementation of psychological intervention shows significant effect on compliance improvement of patients with liver cirrhosis.

Objective To analyze the immunophenotyping characteristics of myeloid leukemia in transgenic mouse.Methods According to differential antigen expression profile on various hematopoietic lineages,flow cytometric analysis of bone marrow sample was performed on 5 myeloid leukemia mice and 10 healthy BL6 mice.Cell cycle analysis was further performed to assess cell proliferation.Results Expressions of Mac-1+ Gr-1+ and c-Kit+ in bone marrow cells in transgenic leukemia mice were(72.6±6.5)% and (20.5±4.8)%,and it were significantly higher than those in normal mice[(52.8±4.8)% and(2.1±0.3)%](t=6.66,12.66,P＜0.01).And expressions of B220+,CD3+,CD41+ and Ter119+ in leukemia mice were(2.7±1.1)%,(1.2±0.3)%,(1.2±0.6)% and(2.8±1.1)%,respectively.It were significantly lower than those in normal mice[(20.2±2.1)%.(6.6±1.3)%,(4.7±1.1)% and(10.6±1.2)%](t=-17.63,-8.69,-6.30,-12.28,P＜0.01).The percentages of S phase and G2/M phase in leukemia mice were(25.7±4.2)% and(21.1±4.2)%,respectively.It were significantly increased as compared with normal mice[(11.8±2.1)% and(8.9±1.8)%](t=8.59,7.98,P＜0.01).Conclusions Immunophenotyping of myeloid leukemia in transgenic mouse was characterized by hish expression of myeloid specific marker(Mac-1 and Gr-1)and hematopoietic stem/progenitors cells specific marker(c-Kit),and by low expression of B-lymphoid specific marker(B220),T-lymphoid(CD3),megakaryocyte(CD41)and Erythroid(Ter119).