Objective: To explore the troubleshooting of medical equipment and ensure its function and performance in daily work in hospital. Methods: According to the fault degree, equipment important degree, time and funds the difference, we should adopt different repair method. Results:Medical equipment fault is varied. The repair method depends on the repair time, repair funds for various reasons, we should according to the specific situation, weigh the advantages and disadvantages before making a decision. Conclusion:Medical equipment repair involves many factors. Leadership should be aware of the engineering and technical personnel in the hospital daily work, improve the level of engineering and technical personnel, in order to safeguard the medical equipment intact rate and meet needs.

Objective To explore the method and therapeutic principle of transcatheter closure of coronary artery fistula, aortopulmonary collaterals and aortopulmonary window. Methods Interventional occlusion of 4 cases of coronary artery fistulas and 1 case of aortopulmonary collaterals with Cook coils, 1 case of coronary artery fistulas and 1 case of aortopulmonary window with AGA Amplatzer duct occluder. The mean age of 7 children were 8.5 years. Results Transcatheter closure of 7 cases of vascular malformations were successful. During the follow-up period of 1 month to 5 years, no residual shunt and other complications appeared. Conclusion The curative effect of transcatheter closure of vascular malformations was good. But for the occlusions′ success and prevention from complications occurrence, the indications of closure should be obeyed, the time of X-ray exposure should be less than 60 minutes.

Objective To evaluate the therapeutic effect of transcatheter closure of perimenbranous ventricular septal defect (PMVSD) with membranous VSD occluder device and compare the effect of transcatheter closure of VSD with surgery. Methods The therapeutic effect of transcatheter occlusion in 48 children with VSD is compared with that of other 73 cases who had received surgical treatment. Age, height, weight, pulmmary artery pressure, size of the defect, time for hospitalization, success rate as well as complications after operations are compared between the 2 groups. All the data are proccessed either by means of t test or ? 2 test statistically. Results There are no statistical differences between the two groups in age, height, weight, pulmonary systolic pressure and the rate of success. But the size of VSD is smaller and the time for operation and hospitalization is shorter in the group of transcatheter occlusion. There are no significant differences between the two groups in the rate of complications including the second surgery, residual shunt, bleeding, nerve injury, hemolysis, Ⅲ atrioventricular block, pneumothorax, hydrothorax, hydropericardium, aortic valve insufficiency and infection. But left anterior bundle branch block and complete left bundle branch block occur more often in the group of the catheter interventions during or after the occlusion. Conclusion Transcatheter occlusion shows a promising therapeutic effect on VSD. To prevent complications, therapeutic rules and technical criterias should be obeyed and close monitoring after the closure should be carried out.

Objective: To study the architectural features and the biomechanical properties of human masseter and temporolis muscles. Methods: The architecture parameters of masseter and temporolis muscles on both sides of 5 human corpes fixed in formalin for more than 1 year were measured and quantitatively analyzed. Results: Human masseter and temporolis muscles were multipennate, there existed many layers of aponeurosis to which muscle fibers attached especially within the superficial portion of the masseter. The parameters of superficial portion of the masseter were statistically different from those of the deep portion, so were those of anterior portion of temporolis from those of posterior portion; the posterior part of the temporolis was the heaviest, the deep of the masseter the lightest. The physiological cross-sectional area of the superficial part of masseter was the largest, the posterior of temporolis the second, the anterior of temporolis the third, and the deep of the masseter the smallest. Among the ratios of muscle weight vs physiological cross-sectional area in each portion of the masseter and temporolis, the ratio in the deep part of masseter was the largest, that in the posterior of temporolis the smallest, that in the superficial of the masseter was similar to that in the anterior of the temporolis. In addition, the fiber in the posterior of the temporolis was the longest and that in the deep of the masseter the shortest. Conclusion: The deep portion of masseter is designed for force production, the posterior of the temporolis for velocity production, and the superficial of the masseter and the anterior of the temporolis for both force and velocity production. The deep part of masseter and the anterior of temporolis play an important part in maintaining mandibular position and balence, and the superficial of masseter and the posterior of temporolis play a major role in producing occlusive force and mandibular fast retrusion.

Objective:To understand the development reality of pastes in Hubei province through the investigation of paste busi-ness in 2013. Methods:Issued by Hubei provincial administration of traditional Chinese medicine, a questionnaire investigation was a-dopted in the study. The implementation, usage amount, scope, composition of the users, price, technical personnel and propaganda of pastes were investigated and statistically analyzed in 91 TCM, integrated Chinese and western and national hospitals in our province. Results:The business conduction rate of pastes in Hubei province was nearly 61. 54% in 2013 with the production of approximately 45,000 batches and the technical personnel of 1 538. The paste business created great economic value of 0. 48 million yuan in 2013 with strengthened propaganda. However, the brand building was slightly weak. Conclusion:The business of pastes in Hubei province has developed rapidly and still shows great development potential.

objective To investigate the relationship between serum iron,ferritin(SF),transferrin(TRF)and coronary artery stenosis asd well to find the possible cause of coronary heart disease,Methods All the 315 pailents underwent coronary angiography.Serum iron,SF and TBF were measured.All patients were divlded into three groups according to the Gensini score.The distribution of serum iron,SF,TRF in the three groups underwent analysis of variance and the relationship between serum iron,SF,TRF and the Gensini score were further investigated by means of multiple linear regression analysis.Results The analysis of one-way variance showed that serum iron,SF and TRF/SF Were associated with the Gensini score(coefficient correlation=6.162,7.191 and 4.380,P<0.05).Muhiple linear regression analysis adjusted for many risk factors for coronary heart disease showed that SF had independent association with the Gensini score.(r=0.240.P<0.01).Conclusion Ferritin is independ-ently associated with coronary artery stenosis.

Objective To evaluate the safety and efficacy of percutaneous closure for muscular ventricular septal defect(MVSD).Methods Fifty-one patients diagnosed as MVSD from October 2011 to July 2016 at Guangdong General Hospital were enrolled including 32 males and 19 females,ranging from 1 to 16 (5.12 ±3.52) years in age,weight (20.19 ± 10.55) kg.The diameter of the MVSD was (4.82 ± 2.51) mm which was measured by transthoracic echocardiography (TTE),and multiple defects were found in 10 patients.The choice of plugging device and transport system depended on the size,position and status of MVSD.TTE and left ventricular (LV) angiography were performed before and after release of the device to evaluate the therapeutic effects.Electrocardiogram and TTE were performed during follow-up period at 24 h,1 month,3 months,6 months and 12 months after operation and yearly thereafter.Results Eight cases showed no hemodynamic significance through standard catheter examination then the interventional therapy was stopped.Cardiac arrest was found in 1 case when the long sheath was transported along the track,and the procedure was terminated immediately,and the selective surgical operation was performed after successful rescue.The devices were successfully placed in the rest of 42 patients (97.6％) with operation time (90.68 ± 36.42) min and fluoroscopy time (18.67 ± 10.89) min.The average of follow-up time was (13.82 ± 13.84) months ranging from 1 to 48 months.It was found that mild residual shunts showed in 4 cases during operation,mild tricuspid regurgitation showed in 2 cases and trivial aortic regurgitation showed in 1 case at 6 months after operation,but there was no need to intervene anymore.Conclusions Percutaneous closure of MVSD in children is safe and effective with high successful rate and low incidence of complication.The middle-term follow-up findings were satisfactory.

Objective To analyze the incidence of complications during and after interventional therapy for common con-genital heart disease (CHD) in children. Methods From January 2011 to December 2013, interventional therapy of common congenital heart disease which include ventricular septal defect (VSD), atrial septal defect (ASD), patent ductus arteriosus (PDA) and pulmonary valve stenosis (PS) were performed in 2356 patients. Among them, 159 patients who developed complications during and post to interventional therapy were retrospectively analyzed. Results The overall complication rate was 6.75%(159/2356) (11.40% post VSD occlusion, 7.50% post ASD occlusion, 3.09% post PDA occlusion, 1.63% post percutaneous balloon pulmonary valvuloplasty (PBPV) ).The rate of arrhythmia was 4.41%(102/2356). The severe complication rate was 2.71%(64/2356) (3.62%post VSD occlusion, 2.21%post ASD occlusion, 2.53%post PDA occlusion, 1.63%post PBPV). The intraoperative severe complication rate was 0.51%(12/2356);the early severe complication rate was 1.99%(47/2356);the late severe complication rate was 0.21%(5/2356). Interventional therapy rate was 0.13%(3/2356); cardiovascular surgery rate was 0.64%(15/2356);conservative treatment rate was 1.95%(46/2356). The mortality rate was 0.08%(2/2356). Conclusions The complications and mortality rate of interventional therapy for CHD in children are relatively low, but cannot be ignored. The complication could be reduced by choosing proper indications, following the operational procedures and careful operative follow-up.

Gypsum Fibrosum is one of mineral medicines, which is widely used in clinics for a long time. It is mainly used for treating epidemic febrile diseases and excess-heat syndrome. The studies on the heat-clearing effects and mechanisms of Gypsum Fibro-sum in recent years were summarized in the paper,which can provide scientific reference for its further research, application and the heat-clearing mechanism exploration.