Objective To develop a portable and automatic quick screener for noise-induced hearing loss(NIHL),which is suitable for airman and ground crew.Methods Through using audio decoder chip VS1003 to achieve quick screener for noise-induced hearing loss and pre-exposing for special background noise.LPC2148 of ARM7-TDMI configuration was adopted as main controlling chip,and its software design was completed by multitask scheduler based on UCOS-Ⅱ,while the FAT system controlled the read-write to the files in SD card.The signal emergence,change in hearing class,frequency selection as well as records of subject reaction were automatically achieved.Results The system can produce stable signal of exact frequency according to GBZ49-2002 Diagnostic Criteria of Occupational Noise-induced Hearing Loss to output stability of the frequency and intensity of the audio signal,and the specific context of the noise pre-exposure function with screening of hearing impairment was achieved automatically.Conclusion Based on the great power of embedded system and VS1003,the portable and automatic quick screener for noise-induced hearing loss(NIHL) can be developed to carry out many functions,which has several features,such as simple structure,high integration,good stability and use of flexible etc.

ObjectiveTo investigate the clinical features and pregnant outcomes of the pregnant women with congenital adrenal hyperplasia (CAH) 21-hydroxylase deficiency (21-OHD).MethodsThe clinical features,therapies,pregnant outcomes of the pregnant women with 21-OHD were retrospectively reviewed in Peking Union Medical College Hospital,from January 2005 to April 2011.ResultsThere were 8 pregnant womenwith 21-OHD including 5siinplevirilizing patientsand 3nonclassical 21-OHD women.Eightpatientswereacceptedprogestationalandprenatalcontinuallowerglucocorticoid treatment.During the gestational period,the dosage of glucocorticoid was adjusted in one pregnancy.The serum level of 17-alpha hydroxyprogesterone (17-OHP) were elevated after pregnancy [ (70 ± 38 ) versus (24 ±23) nmol/L,P ＜ 0.05].The fertility and offspring rate of 8 patients was 8/12,the fertility and offspring rate of patients who started treatment at preadolescence was significantly increased (4/5 versus 4/7).Four patients were accepted genital reconstructive surgery ( clitorectomy,clitoroplasty,vulvoplasty) before pregnancy.The incidence of GDM was 1/8.All patients selected caesarean at from 37 +6 gestation weeks to 39+6 gestation weeks.The average newborn birth weight was (3210 ± 447 ) g,and height was (48 ±2) cm of 8 neonates,none of them was CAH.Conclusions Medical and surgical therapy provides satisfactory fertility and pregnancy outcomes for women with 21-OHD.It is safe to pregnant women with 21-OHD and their fetus in continual lower glucocorticoid treatment.The dosage of glucocorticoid should be carefully adjusted during the pregnancy individually according to serum level of 17-OHP.

Promotion of outstanding people to head nurses is key to hospital nursing management.In view of the current shortcomings in the analysis of appraisal data and the interpretation of appraisal results,the analysis of means(ANOM)method is introduced to the process of hospital human resource management.The proposed method aims to solve the problem when the score differences between interviewers are great and the score differences between candidates are small.An example for head nurses' promotion appraisal in a hospital is offered to demonstrate that statistical tools can provide the decision support for hospital personnel selection.Finally,the application differences between ANOM and analysis of variance(ANOVA) in human resources appraisal are compared.

Aim To synthesize and identify artificial antigen of podophyllotoxin for the production of podophyllotoxin polyclonal antibody. Methods The hapten was synthesized by two different chemical approaches and characterized by TLC, IR, NMR, and MS. Mixed anhydride reaction (MAR) and active ester method (AEM) were used to couple the podophyllotoxin to carrier proteins (BSA and OVA). Characterization of artificial antigens was done by using spectroscopy and electrophoresis. The anti-podophyllotoxin polyclonal antibodies were obtained through immunizing rabbits. Results The results from IR, NMR and MS showed that 4-O-succinoyl podophyllotoxin (hapten) was successfully synthesized. The coupling molar ratios of the hapten and carrier proteins were 88.6 for Hapten-BSA1, 40.3 for Hapten-BSA2, 17.8 for Hapten-OVA1, and 54.2 for Hapten-OVA2. Hapten conjugates coupled with BSA yielded two sets of the specific and affinitive polyclonal antibodies. One set of antibodies showed an IC50 value of 2.21 μg·mL -1 with a detection limit of 0.12 μg·mL -1. Conclusion Antigenic conjugates were artificially synthesized, and based on these artificial antigens, polyclonal antibodies against podophyllotoxin were raised from rabbits immunized with two different immunogens and characterized with an indirect ELISA format.

Objective To analyze the relationship between karyotypes and clinic features of patients with primary amenorrhea. Method Karyotype analysis of patients with primary amenorrhea was performed by using G-banding technique. Results Karyotype analysis of 468 patients with primary amenorrhea revealed that 255 patients (54. 49% ) had normal female karyotypes and 213 patients (45.51%) had abnormal karyotypes, including 143 patients with abnormal X chromosome, 4 patients with mosaic X -Y chromosome, 57 patients with 46, XY karyotype, 8 patients with abnormal autosome and one patient with Xautosome translocation. 75.52% primary amenorrhea patients with short stature had abnormal X chromosome, and all primary amenorrhea patients with deletion or break-up of Xp11. 1 - 11.4 and Xp21 - 22 were short statures. Conclusion One of the main reasons of primary amenorrhea was chromosome abnormity,especial heterosome abnormity. Karyotype analysis should be used to detect primary amenorrhea patients in regular. There might be relationship between height improvement and the abnormity of Xp11. 1 - 11.4 and Xp21 - 22.

Chemotherapy as a routine method for clinical treatment of cancer has disadvantages such as significant toxicity and strong resistance. In order to improve the efficacy of the drugs and reduce the by-effects, we tried to combine static magnetic field (SMF) with cisplatin or adriamycin. The growth of Hepa1-6 cells treated with the static magnetic field (SMF) combined with cisplatin or adriamycin was significantly inhibited, as detected with MTT (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide) test. Combined treatment group cells underwent significant morphological changes as observed by HE (Hematoxylin and eosin) staining under optical microscope. Cell cycle analysis indicated that SMF increased the ratio of cells arrested in G2/M phase caused by cisplatin, and when treated with SMF combined with adriamycin, cells were almost arrested in G1 and G2/M phase. SCGE test showed that SMF can enhance the ability of cisplatin or adriamycin to promote cell DNA damage. Atomic force microscope observation found that the combination of antitumor drugs and magnetic field treatment induced larger and deeper holes on the cell membrane, and surface structure damage is serious. The combination of antitumor drugs and magnetic field technology effectively inhibits the growth of tumor cells, and reduces drug doses. The results implicate this method as potential cancer therapy.
Antineoplastic Agents ; pharmacology ; Cell Cycle ; Cell Line, Tumor ; drug effects ; Cisplatin ; pharmacology ; DNA Damage ; Doxorubicin ; pharmacology ; Humans ; Magnetic Fields

Objective Summarizing single clinical experience with extracorpomreal membrane oxygenation(ECMO) as a supplement to extracorporeal cardiopulmonary resuscitation(ECPR) in adult patients with cardiac arrest to explore new ideas.Methods We retrospectively analyzed the characteristics of 17 patients who underwent ECMO as part of ECPR from July 2005 to September 2014 at Fuwai Hospital,and analyzed the differences between the survival group(n =6) and the in-hospital death group.Results The mean CPR time was(44.53 ± 21.39) min.The support duration of ECMO was(106.38-± 70.43) h.12 patients of all were successfully weaned from ECMO,and 6 patients survived to hospital discharge.There were significant differences between the two groups in terms of the last serum creatinine and blood lactate acid level before ECMO,and the time to lactate normalization.11 patients died,7 patients developed bleeding,and 8 cases developed infection.Conclusion Single-center data showed that applying ECMO as a means of ECPR improved the survival rate in cardiac arrest patients.Additionally,creatinine and lactic acid were good indicators for assessing prognosis.Refractory circulatory dysfunction and neurologic complications have an adverse impact on the survival of cardiac arrest patients.

Objective. Analysis of the cause of intrauterine death of one fetus of twin and to evaluate the outcome of conservative management of twin pregnancy with single fetal death.Method.A retrospective review was undertaken on PUMC hospital records of women who delivered twin between Jan. 1987 and Dec. 1998.Result.During the recent 12 years, 99 pregnant women were documented as twin pregnancies. Of the twin pregnancies during this period, 13 were complicated by a single intrauterine death. Four women suffered this complication during their first trimester. In the remain 9 cases one fetus died during second or third trimester. The cesarean section was given in three pregnant women soon after a single intrauterine death because of the survival fetal distress. No consumptive coagulopathy was apparent in all 13 pregnant women. It is wise that the pregnancy was managed conservatively, with regular coagulation parameters obtained.Conclusion.Our results support conservative management in twin pregnancies complicated by single fetal death.

Objective:To translate Pediatric Quality of Life Inventory TM 3.2 Diabetes Module (PedsQL TM 3.2-DM) for children and adolescents into Chinese and analyze the reliability and validity of it. Methods:Following the principle of Brislin translation, the source scale was translated by 2 supervisor nurses with master's degrees and the scale was back translated by 2 nursing experts with overseas study experience. The semantic adjustment of the scale was carried out by pre-surveys. By the convenient sampling method, a total of 175 children and adolescents with diabetes who were treated in Department of Endocrinology and Department of Pediatrics in ClassⅢ Grade A hospitals in Yantai and Qingdao from March to August 2019 were investigated and 175 effective scales were finally included to analyze the reliability and validity of the revised scale in children and adolescents with diabetes.Results:The Chinese version of PedsQL TM 3.2-DM had 33 items in total, including 4 dimensions such as disease-related symptoms, treatment compliance, disease-caused worry and communication. The Cronbach's α coefficient of Chinese version of PedsQL TM 3.2-DM was 0.927 and that of 4 dimensions were respectively 0.885, 0.910, 0.828 and 0.798. After assessment by panel of experts, the content validity index of Chinese version of PedsQL TM 3.2-DM was 0.97 and the content validity index of every item was from 0.80 to 1.00. A total of 4 common factors were extracted by exploratory factor analysis and the cumulative variance contribution rate was 59.539%. In addition, the factor loading of each item on its common factor was over 0.4. Conclusions:The Chinese version of PedsQL TM 3.2-DM has good reliability and validity, which can be used as a simple tool for self-assessment of quality of life in children aged from 8 to 19 years with diabetes.

Objective To study the time extended for getting emergency intervention in different modes of transportation and factors influencing the modes of transportation of patients with ST elevation myocardial infarction (STEMI).Methods A total of 564 consecutive patients with STEMI admitted from September 2013 to June 2016 were enrolled in the study.The clinical data about time consumed for getting emergency intervention and modes of transportation were collected.Results According to the mode of transportation,patients were divided into three groups:emergency care system (EMS) transportation group (n =96),self-transportation group (n =206) and referral group in which the patients were sent in from other hospitals (n =262).EMS transportation group had significantly shorter total ischemic time before emergency treatment than self-transportation group (229 rin vs.418 min,P ＜ 0.05) and referral group (229 min vs.512 rin,P ＜ 0.05),and significantly shorter length of pre-hospital time than self-arrival group (55 min vs.110 min;P＜0.05) and referral group (55 min vs.372 min;P＜0,05).The referral group had longer pre-hospital time and the self-transportation group had longer door-to-balloon time,but there was no difference in total ischemic time between the self-arrival and referral group (Z =-1.882,P =0.068).Multivariate logistic regression was used to analyze influence factors in mode of transportation:(1) patients characterized with high school or university education,profession of civil service,and their transportation distance more than 30 km were greater in number than referral group (P ＜ 0.05);(2) patients identified with senior middle school education,staff member of public sectors or company,their transportation distance less than 30 km,and with killip grade above Ⅱ were more likely to have EMS transport (P ＜ 0.05);(3) patients defined as businessmen without taking out new rural cooperative medical insurance,taking up transportation distance less than 80 km,and subjecting to killip grade Ⅰ had a higher proportion of individuals of this kind taking self-transportation (P ＜ 0.05).Conclusion Mode of transportation is an important factor that affects the time extended to get emergency intervention.Education level,occupation,medical insurance type,transportation distance,killip grade are associated with modes of transport.