Asaprimarilyused plasticizerin polyvinyl chloride,d(i2-ethylhexy)lphthalate(DEHP)is extensively used in consumer products,flooring and wall coverings,food contact applications,and medical devices.Because DEHP has been detected in waters,soils and air,and its metabolites have also been detected in human urinary,sufficient evidences show that DEHP is ubiquitous in the environment worldwide.DEHP is already in the blacklist of priority pollutants in water in China.Many researches indicate that DEHP is one kind of endocrine disrupting chemicals in animals,with carcinogenicity,teratogenicity and mutagenicity.Based on the researches and review on DEHP,this paper principally discussed the environmental level,metabolism and biological markers of DEHP,as well as the research progress on human health effects.

Child, Preschool ; Diagnosis, Differential ; Humans ; Male ; Myositis Ossificans ; diagnosis ; diagnostic imaging ; pathology ; physiopathology ; Prognosis ; Tomography, X-Ray Computed

Objective To survey the double-preceptor system in standardized residency training of general practitioners (GPs).Methods A questionnaire survey was conducted among 48 residents,53 clinical and community preceptors during May and June 2013.Results The preceptors mostly agree with the necessity to carry out double-preceptor system.82.8％ (24/29) clinical preceptors,95.8％ (23/24) community preceptors and 89.6％ (43/48) residents considered that it was very effective.Less than half of the clinical(13/29) and community (11/24) preceptors knew very clearly about their responsibilities and obligations ; 93.1％ (27/29) clinical preceptors and 95.8 ％ (23/24) community preceptors hoped to receive corresponding training courses.72.4％ (21/29) clinical preceptors and 75.0％ (18/24) community preceptors communicated with residents frequently,75.9％ (22/29) clinical preceptors thought residents were not actively involved was the main obstacle in the implementation of double-preceptor system.The guide contents were focused on clinical skills,scientific research and how to pass assessments.The main approaches were interviews,checking the quality of medical instruments and small lecture.Only 6.9％ (2/29) clinical preceptors conducted outpatient teaching,83.3％ (40/48)residents thought tutors did not knew clearly about their responsibilities and obligations was the main obstacle in the practice of doublepreceptor system.Regarding how to evaluate the double-preceptor system,clinical and community preceptors tended to use examination results and feedback of residents.Clinical preceptors,community preceptors and residents all gave low comments about the preceptor-resident contact handbook.87.5％ (21/24) community preceptors thought lack of corresponding incentive mechanisms was the main obstacle in the practice of double-preceptor system.Conclusions Double-preceptor system has been widely recognized by both preceptors and students.In order to improve the system,we should conduct tutor training courses regularly and establish an effective mechanism to assess and evaluate tutors.

OBJECTIVE To investigate the bacterial distribution and antibiotic resistance situation with urinary tract infection(UTI) for the guidance of rational use of antibiotics.METHODS The antibiotic resistance of clinical isolates from urinary tract infection from Mar 2005 to Jul 2006 was analyzed. RESULTS The most common pathogens in urinary tract infection were Escherichia coli(50.2%),Enterococcus(14.4%),Staphyloccus aureus(8.7%),Klebsiella pneumoniae(7.3%),and Proteus mirabilis(3.9%).E.coli,K.pneumoniae,and P.mirabilis were found to be highly resistant to ampicillin,quinolones and SMZ(70.6-100.0%).Enterococcus were highly resistant to penicillin and quinolones(81.0-96.8%).41.4% of E.coli and 31.3% of K.pneumoniae isolates produced ESBLs.HLGR-Enterococcus were 79.4%.78.9% S.aureus isolates were resistant to oxacillin.CONCLUSIONS The high antibiotic resistance of commonly encountered pathogens is a serious problem and much attention should be paid to detect pathogens and their antibiotic resistance.

Objective To assess standardized patients (SP) in resident general practitioners training for their consultation skills to explore its role in clinical competence training. Methods SP are employed in standardized training for 52 resident general practitioners in Shanghai during May to July 2008 to assess trainees' clinical consultation skills, including medical history taking and physical examinations, as well as clinical competencies of trainers including medical history taking, physical examinations, clinical thinking (diagnosis, differential diagnosis and treatment plans), health education, medical record writing,and reception time management. Feedback and appraisal for their consultation skills were provided by SP later. Problems encountered in trainees' consultation were discussed in group manner with their trainers.And two mouths later, assessment with SPs was undergone again for their consultation skills to compare their scores in consultation skills and percentages of them passing the assessment before and after training. Results Trainees were enrolled in the training aged (28±1 ) years in average ( with a ratio of men to women of 19/33 ). Percentage of trainees passing the assessment by SP for consultation skills was significantly higher after training (88.5%) than that before it (46. 2% ) ( P < 0. 01 ). Percentage of trainees with scores passing assessment by trainers was also significantly higher after training than that before it (86.5% vs. 51.9%, P < 0.01 ), with a percentage of those qualified for clinical skills and health education after training of 80. 8% and 88.5%, respectively, as compared to those of 46. 2% and 67. 3%,respectively before it, ( P < 0. 01 ), and with a percentage of trainees qualified for clinical thinking, out-patient medical record writing and reception time management not changed after training (71.2%, 100. 0%,100. 0%, respectively) as compared to those before it (51.9%, 100. 0% and 100. 0%, respectively)(P > 0. 05 ). Conclusions Application of SP can effectively enhance consultation skills of the trainees,especially in their medical history taking and physical examinations. However, there is still rooms to improvein their clinical thinking.

The progressive injury of retinal ganglion cells ( RGCs) is a common occurrence in several eye diseases, which ultimately may lead to irreversible blindness. Currently, there are still no effective or ideal treatments for it in practice, however some recent studies show that stem cell transplantation may provide a promising new idea for neuroprotection and replacement of retinal ganglion cells. This paper will review the research progress of stem cell transplantation-based treatment.

OBJECTIVE:To improve the information system of Out-patient pharmacy intravenous admixture center (OUIVA) to improve the pharmaceutical service rendered to the transfusion patient and ensure the safety of drug use. METHODS:The defi-ciency in OUIVA information system of our hospital were analyzed,in which improvement was made with respect to ungrouped doctor’s orders,inconsistency between the total doses charged and the prescribed doses and the error of transfusion days that occurred fre-quently. The conformity rate of out-patient fluid transfusion prescriptions and the time of patients’waiting for transfusion before and after the improvement were compared and evaluated. RESULTS:Improvement was made to OUIVA information system through the optimization of transfusion process,the application of condition limit,the adding of logical operation and verification and the other measures. After improvement,the unconformity rate of out-patient prescriptions in our hospital descended from 11.24% in 2013 to 3.69% in 2014,with an obvious increase in the accuracy rate of dispensing for fluid transfusion;and the time of patients’waiting for transfusion was shortened from 30-40 min to 15-20 min,with an increase in the degree of satisfaction of transfusion patients. CONCLUSIONS:The OUIVA information system can reduce the errors of drug dispensing for fluid transfusion and improve pharmaceutical services.

BACKGROUND:Structural and functional changes of endothelial cels are the common pathological basis of cardiovascular disease. Severe structural and functional damage of endothelial cels are found in patients with hypertension or coronary heart diseases.
OBJECTIVE:To explore a new treatment method for hypertension from the perspective of vascular endothelial progenitor cels.
METHODS: PubMed and Wanfang databases were retrieved using the keywords “hypertension, EPCs” and approximately relevant 200 English and 100 Chinese literatures were obtained. Forty-nine eligible literatures were screened finaly.
RESULTS AND CONCLUSION:Endothelial progenitor cels have strong differentiation and proliferation capacities. This review may provide a new insight into potential sources of cels for diagnosis and treatment of hypertension.

OBJECTIVE:To optimize the extraction technology of Compound qima capsules. METHODS:With the blood pres-sure lowering of rats as index,pharmacological efficacy test was used to screen the preparation technology(A was whole herb de-coction;B was Gastrodia elata fine powder mixed with other decocted medical materials). The extraction technology was opti-mized by single factor and orthogonal test using the contents of astragaloside and isoflavone grape glycosides and the quality of sol-id as indexes,with added water,decoction time,decoction times as factors;and the verification test was carried out. RESULTS:Pharmacological efficacy test showed that antihypertensive effect of sample by technology B was superior. The optimal extraction condition of other medical materials of technology B was as follows as 12-fold water per time,decocting for 1.5 h,for 3 times. In verification test,average extraction rates of astragaloside and isoflavone grape glycosides were 64.02% and 51.97%,and average value of the quality of solid was 5.69 g(RSD≤1.92%,n=3). CONCLUSIONS:The optimized extraction technology is stable and feasible.

Objective To study the effect of angiotensin Ⅱ and aldosterone (ALD) in patients with congenital heart disease by preoperative nursing interventions at high altitude area. Methods 86 patients with congenital heart disease were divided into the experimental group and the control group on average by random. The experimental group was treated with preoperative nursing interventions and routine nursing before operation and the control group was treated with routine nursing only. Angiotensin Ⅱ and aldosterone were detected before anesthesia, 30min after operation and after pulling out of endotracheal tube respectively. Results The concentration of Angiotensin Ⅱ and aldosterone was significantly lower in the experimental group than the control group. Conclusions The risk of open surgical operation for congenital heart disease at high altitude can be reduced by preoperative nursing interventions.