The objective is to discuss related problems of medical equipment management to modern hospital.Research Contents:the necessity of strengthening management to medical equipment in medical establishment;the goal of purchase management in medical equipment;assets of medical equipment and stream management;monitoring and management in adverse event monitoring of medical apparatus;medical instrument abandonment management.By strengthening integrated management of medical instrument,the purposes can be attained imply scientific decision,reasonable purchase,effective management,supply guarantee,containment of adverse event monitoring,safeguard of medical service security and quality of medical treatment.

Objective To discuss the molecular structures and functions of Alu repeats,and its relationships with malignant tumors. Methods Advances in molecular biology and oncology of Alu repeats in recent years had been reviewed. Results Homologous recombination between Alu repeats may result in various genetic exchanges,including duplications, deletions and translocations,cause a series of malignancy alteration by activating some oncogenes. Conclusion Alu repeats as a sort of multifunction regulatory sequences may play an important role during the carcinogenesis and progression of some tumors.

Sepsis is a life-threatening organ dysfunction caused by dys-regulated host response to infection. Acute kidney injury (AKI) caused by sepsis is one of the most common and severe clinical disease, which incidence and mortality remains high level, and has poor clinical outcomes. Continuous renal replacement therapy (CRRT) is an indispensable tool for the treatment of critically ill patients with severe AKI, but there is no consensus on the appropriate treatment dose of CRRT. By reviewing the process of high volume hemofiltration (HVHF) and standard volume hemofiltration (SVHF), comparing their benefits and risks, and making suggestions for therapeutic schedule improvement, reference for clinical work was provided.

In this study, we applied generalized autoregressive conditional heteroskedasticity (GARCH) model to conditional fluctuation characteristics of heart rate variation (HRV) series (congestive heart failure, Normal), with all the data from PhysioNet ECG database. Research results proved the existence of condition fluctuation characteristic in the series of changing rate of HRV. In the GARCH model family, threshold GARCH (1,1)(TGARCH (1,1)) model performs best in fitting changing rate of HRV. Although the structure of ARCH (1) model is simple, its error is the closest to that of TGARCH (1, 1) model. The results also showed that the difference was obvious between disease group and normal group. All these results provide a new method to the research and clinical application of HRV.
Cardiology ; trends ; Heart Failure ; physiopathology ; Heart Rate ; Humans ; Models, Cardiovascular

Objective To study the influence of mill speed on extract of ultra- fine powder of Bulbus Fritillariae Cirrhosae. Methods The extraction rate of ultra- fine powder of Bulbus Fritillariae Cirrhosae, which passed a 400- mesh screen, was detected and compared with that passed a 100- mesh screen under different mill speeds. At the same time, mathematical models for extraction established with applied hyperbolic function and Weibuer function were compared. Result The extraction rate of the ultra- fine powder was higher than that of the fine powder when the mill speed was over 70 r/min (P 0.05). Applied hyperbolic function was superior to Weibuer function for the simulation of extraction. Conclusion The mill speed has an influence on the extraction of to ultra- fine powder of Bulbus Fritillariae Cirrhosae, indicating that the effect of divergent function on the extraction should be considered.

Objective To investigate the effects of intervention of information literacy education on the feeling of uncertainty of patients with percutaneous coronary intervention.Methods A total of 228 cases of patients with percutaneous coronary intervention who were hospitalized during July 2010 to June 2012 were selected.The patients were divided into two groups by means of random numbers table:the experimental group (including 119 cases) and the control group (including 109 cases).The patients of the control group received traditional nursing intervention,while the patients of the experimental group received additional information literacy education intervention besides the traditional nursing.The change of feeling of uncertainty and state anxiety level of patients under two kinds of nursing interventions was analyzed and compared.Results The patients of the experimental group had high uncertainty level on the day of admission,(99.17-4.46) points.It was obviously higher than the total score (80) by 50％.Compared with that on the day of admission,the uncertainty level on the night before surgery and on the day of patient discharge significantly declined.The state anxiety level of the patients of the experimental group was (52.97±5.91) points,higher than the normative level of Chinese normal people.Compared with that on the day of admission,the state anxiety level on the night before surgery and on the day of patient discharge significantly declined,and it was lower than the normative level.Compared with those of the control group,the MUIS and SAI assessment of the experimental group on the night before surgery and the day of patient discharge obviously declined.Conclusions The information literacy education intervention was able to reduce the uncertainty level and state anxiety level of patients with percutaneous coronary intervention.Therefore,the nursing quality of patients was enhanced.

Objective To investigate the appropriate low tube current of abdominal CT on a 64-slice spiral CT. Methods (1) Phantom study:The phantom Catphan500R was scanned with a fixed 120 kVp,and 450,400,380,360,340,320,300,280 mA, respectively. 15, 9, 8, 7, 6 mm diameter low-contrast objects with 1% contrast were scanned for evaluating image quality. CT images were graded in terms of lowcontrast conspicuity by using a five-point scale. Statistical analyses were performed to determine the appropriate tube current and the interval leading to the qualitative change. (2) Clinical study: 3 groups of 45 patients who had 2 examinations of non-enhanced abdominal CT within 3 months were enrolled. All patients were scanned with 450 mA at first scanning. For the second scanning, group-1 was scanned with optimal tube current, group-2 was scanned with optimal tube current plus interval, group-3 was scanned with optimal tube current sinus interval. CT images were graded in terms of the diagnostic acceptability at three anatomic levels including porta hepatis, pancreas and the upper pole kidney, and the image noises of eight organs including abdominal aorta, portal vein, liver, spleen, gallbladder, pancreas, renal cortex, renal medulla were graded by using a five-point scale. The image quality was compared with non-parametric rank sum test,and the individual factors of the patients were compared with the A VONA. Results (1) The optimal tube current and interval leading to the qualitative change were 340 mA and 40 mA respectively. (2) There were no significant differences in image quality between 340 mA and 450 mA in group-1, between 380 mA and 450 mA in group-2 (P ＞ 0. 05). There was significant difference in image quality between 300 mA and 450 mA in group-3 (the mean scores for 300 mA were 2. 92 ± 0. 62,2.92 ± 0. 62,2.64 ± 0. 84,2. 72 ±0.82,2.63 ±0.71,2.51 ±0.84,3.04 ±0.72,3.04 ±0.72,2.63 ±0.71,2.52 ±0.73,2.93 ±0.81respectively; for 450 mA were 3.93 ± 0. 72,3.94 ± 0. 72,3.41 ± 0. 64,3.43 ± 0. 61,3.62 ± 0. 93,3.63 ±0.71,3.93 ±0.81,3.93 ±0.81,3.43 ±0.61,3.52 ±0.92,3.84 ±0.82 respectively) (Z = -2.449 to - 2. 236, P ＜ 0. 05). Conclusion Radiation dose can be effectively reduced by using an appropriate and lower current of 340 mA.

Objective To investigate the clinical effects of different doses of propranolol in treatment of infantile mixed and deep hemangioma,and to provid theoretical and experimental evidence for the treatment of hemangioma. Methods The selected 62 patients with mixed and deep hemangioma were divided randomly into low dose (1.5mg·kg-1 ·d-1 )and high dose (3.0 mg·kg-1 ·d-1 )of propranolol groups,3 times a day,6 months as a course,the changes in hemangioma size and the incidence of adverse reactions were recorded.Results The efficacy was evaluated using Achauer system.The total effective rate was 80.65% in low dose of propranolol group and 93.55% in high dose of propranolol group,including 6 cases of class Ⅰ (poor),9 cases of class Ⅱ (moderate), 11 cases of classⅢ (good),and 5 cases of class Ⅳ (excellent)in low dose propranolol group;while 2 cases of class Ⅰ (poor),4 cases of class Ⅱ (moderate),10 cases of class Ⅲ (good)and 15 cases of Ⅳ (excellent)in high dose of propranolol group.The efficacy in high dose of proprandol group was significantly better than that in low dose of proprandol group (P<0.05),there were no significant differences in the efficacies between different sites and different types (P>0.05)and there was no significant difference in the incidence of adverse reaction between two groups (P>0.05).Conclusion The efficacy of oral 3.0 mg·kg-1 ·d-1 propranolol in treatment of infantile mixed and deep hemangioma is increased significantly, and there is no significant adverse reactions after increasing doses.Therefore,high dose of propranolol should be recommended in order to improve the therapeutic effect.

Objective: To observe the clinical efficacy of tuina combined with electroacupuncture (EA) in treating lateral humeral epicondylitis. ＜br> Methods: Totally 118 patients were randomly allocated into a treatment group and a control group, 59 cases in each. The patients in the treatment group were treated with tuina combined with EA treatment, while those in the control group were treated by EA alone. Clinical efficacies of the two groups were compared after the treatment. ＜br> Results: The total effective rate was 93.2% in the treatment group, versus 84.7% in the control group, and the difference was statistically significant (P＜0.05). ＜br> Conclusion: Tuina combined with EA treatment for lateral humeral epicondylitis has a significant effect.

Objective:To investigate the clinical efficacy of point injection in treating lumbar intervertebral disc protrusion.Methods:One hundred and fifty-six patients with lumbar intervertebral disc protrusion were randomly allocated to an observation group of 80 cases (mecobalamin injection)and a control group of76 cases(vitamin B12 injection).Injection at Jiaji (Ex-B 2)points corresponding to the spinal segments of the pressed nerve roots was performed.Results:The efficacy rate Was 86.3% in the observation group and 78.9% in the control group.There was a statistically significant difference in curative effect between the two groups (P＜0.01).Conclusion:The results indicate that the clinical curative effect of acupoint injection of mecobalamin is significantly better than that of point injection of vitamin B12 in treating lumbar intervertebral disc protrusion.