Under the guidance of three-dimensional images, and the superposition of special material step by step, three-dimensional entity model can be generated. It is a new technology which has been developing rapidly in recent years. Now 3-D printing products has penetrated into every aspect of our lives, at the same time, with the progressing of 3-D imaging technology and materials engineering, 3-D printing technology are gradually applying to medical practice, including the orthopaedics, treatment of congenital heart disease and valve replacement. There are few researches about the 3-D printing technology in the application of percutaneous coronary intervention (PCI), so the paper is to preliminary explore the application of 3-D printing in PCI from three aspects of technology teaching, doctor-patient communication and surgical planning.

A method for removing the bands of interferential component from mixture infrared spectra during the measurement was presented. A synthetic background with the thickness of the interferential component adjustable) and controllable was produced by scanning two different background samples in sequence. The absorption) intensity of the synthetic background spectrum varies with the scanning number during the measurement. Therefore, when the infrared absorption of the interferential component in the background sample becomes) equal to that in the mixture sample, the effect of interferential component can be deducted. This method was applied to stearic acid and 2-octadecyl-7,7,8,8-tetracyanoquinodimethane (C_(18))TCNQ) mixture system. The results showed that the absorption peaks of stearic acid or C_(18))TCNQ can be removed completely from the final resulted infrared spectrum.

Objective To summarize the clinical characteristics of necrotizing pneumococcal pneu-monia in childhood,so as to estimate the prognosis and guide the therapy. Methods We retrospectively col-lected and analyzed the data of 15 necrotizing pneumococcal pneumonia cases hospitalized in the pediatric de-partment of Shengjing Hospital from January 2008 to April 2011. The clinical features and treatment outcomes were analyzed,which included sex, age, maximum body temperature, hospital stay, duration of fever, white blood cell count and C-reactive protein level. Fifteen strains of the clinical isolated streptococcus were ana-lyzed antimicrobial susceptibility test with the disk diffusion procedure,and eleven strains of them were ana-lyzed by with minimal inhibitory concentrations. Results All of 15 cases had fever and pleural effusion,1 case with extrapulmonary manifestations. In chest X-ray and CT scanning,the lesion location were on the left in 7 cases,on the right in 7 cases,bilateral in 1 case. All patients had increased white blood cell count and C-reactive protein. Fifteen strains of streptococcus pneumoniae were collected from clinic samples,which had high sensitivity to vancomycin,linezolid,rifampicin,levofloxacin,no resistant strains appeared. We observed that the resistant rates of streptococcus pneumoniae to penicillin was 7/15,and to erythromycin and clindamy-cin were 11/11 and 10/11. The average length of stay in hospital was 39 d and no death occurred during the hospitalization. Conclusion The treatment of necrotizing pneumococcal pneumonia in childhood usually takes a longer time,and patients always have obvious symptoms. The drug-resisting of streptococcus pneu-moniae are serious,and children with necrotizing pneumococcal pneumonia are easily complicated by pleural effusion. But through active treatment,the prognosis is good.

Objective Coronary heart disease (CHD) is a multifactorial disease. This meta-analysis was performed to evaluate the relationship between angiotensinogen gene polymorphisms and CHD in the Chinese population. Methods We searched literature in pubmed (1990-2010.8) and CNKI (1990-2010.8) for all the relevant studies on 2 angiotensinogen polymorphisms (M235T and T174M) and risk of CHD. The meta-analysis software Stata 10.0 was used for ascertaining heterogeneity among individual studies and for combining all the studies. Furthermore,Egger's test and sensitivity analysis were performed to insure authenticity of the outcome.Results Ten associations studies on 2 angiotensinogen polymorphisms (M235T and T174M) were included in this meta-analysis. In a combined analysis, the summary per-allele odds ratio for CHD of the M235T polymorphism was 1.374 (95% confidence interval, 1.019 to 1.852) and T174M polymorphism was 4.089 (95% confidence interval, 1.697 to 9.851). Conclusions The M235T polymorphism had weak but statistically significant association with CHD while the T174M polymorphism was more strongly associated with a CHD risk in Chinese population, but further confirmation studies are needed.

Atherosclerosis is a chronic inflammatory disease.Atherosclerotic plaque rupture and thrombosis may result in cardio-cerebrovascular events.Inflammatory mediator CD40L widely exists in cells associated with atherosclerosis.They participate in plaque inflammatory response,release proinflammatory cytokines,degrade extracellular matrix,improve procoagulant activity,and promote the progression of atherosclerosis and plaque vulnerability.Intervening CD40/CD40L signaling system may become an effective treatment strategy to slow the progress of atherosclerosis and stabilize atherosclerotic plaques.

The pathogens were tested in 682 cases of neonatal pneumonia,atypical pathogens were found in 167 cases (24.49％).Among the 167 cases,chlamydia trachomatis was detected in 124(74.25％),ureaplasma urealyticum in 55 (32.93％),chlamydia pneumoniae in 47 (28.14％) and mycoplasma pneumoniae in 35 (20.56％).The Chlamydia trachomatis-positive rate in mothers of 167 cases was 80.84％,ureaplasma urealyticum was 53.29％,chlamydia pneumoniae was 50.90％,Mycoplasma pneumoniae was 53.29％.The patients were treated with azithromycin and other antibiotics,151 cases were cured and 11 were effective with an overall efficacy rate of 97.01％.The liver and kidney function were tested before and after treatment; and there were no significant changes after treatment.The results show that azithromycin is safe and effective for treatment of neonatal infectious pneumonia from atypical pathogens.

The corneal epithelial cells are at the surface of the cornea.Human corneal epithelial cells cultured in vitro contribute to fully understand the biological properties of corneal cells,construct disease models in vitro,and play its clinical significance better.This article reviews the recent advances in human corneal epithelial cells cultured in vitro about extractive fraction,extraction methods,factors of progress,impact identification methods.

Medical maintenance,content,quality control of medical equipment and their mutual relationships are discussed.It is to set up the content requirement and controlling way for equipment repairing together with their relationships using the theory and method of modern management science to direct,organize,control and coordinate the repairing work of medical equipment.It is also expected to predict,regulate and check every link of the repairing course so as to establish good quality controlling and management system for optimum repairing effect and economic benefit.This is profound to promote the comprehensive improvement of the quality of medical equipment.

Objective To analyze the relationship between clinical features of infantile cough after infection and microelements in peripheral blood, and to observe the therapeutic of treating this cough with Milkvetch Root and Radix Glycyrrhizae. Methods 75 infantile patients were randomly recruited into a therapeutic group and a reference group. 39 patients in the therapeutic group were treated with Huangqi Zhusheye and Tablete Glycyrrhiza, while 36 patients in the reference group were treated with Azithromycin. The therapeutic effects were evaluated after the treatment. Meanwhile,microelements in peripheral blood of the 75 patients were assayed and made a contrast to 40 healthy children. Results The contents of Fe, Zn, and Mg in peripheral blood of the 75 patients dropped on different levels, comparing to the healthy children.The therapeutic effects of the therapeutic group was much better than the reference group with significant difference (P＜0.05).Liver and renal functional lesion was unseen in both groups after the treatment. Conclusion Infantile past-infection cough may related with the decrease of Mg, Fe, and Zn. Combined usage of Milkvetch Root and Radix Glycyrrhizae clinically has good therapeutic effects to this disease.

Acupuncture Therapy ; Adolescent ; Adult ; Aged ; Cardiac Surgical Procedures ; adverse effects ; Coma ; etiology ; psychology ; therapy ; Consciousness ; Female ; Heart Diseases ; surgery ; Humans ; Male ; Middle Aged ; Young Adult