Objective To analyze the IgG variances between workmen and workwomen in x-ray room,and to provide reference for the assessment of staff in the department of radiology.Methods The staff in the department of radiology who recieved health examination from Janurary 2012 to Janurary 2016 were divided into the male group and the female group.The health examination data of 75 staff in each group were slected and the basic immunization level of the two groups were tested.And then compared the the IgG variances between the two groups.The analysis were conducted by two means of grouping,namely the working age of staff (less than 10 years,between 10 and 20 years, and over 20 years)and the age of staff (aged 21 to 30,aged 31 to 50,aged 51 to 78).Results The level of IgG in the female group were higher than that in the male group when their working age were less than 10 years,and the difference was significant (P <0.05).Both in the male group and the female group,the level of IgG in staff aged 31 to 50 were lower than the others,and the difference was significant (P <0.05).Conclusion The level of IgG in female staff were higher than that in the male staff in different age stages,and it increased with the increase of working age.To analyze the IgG variances of staff the in x-ray room could provide reference for assessment of physiclal status.

Objective To explore the application of implantable venous access port(IVAP)in tumor patients.Methods Overall,246 tumor patients were enrolled.The clinical application and nursing of IVAPs were reviewed retrospectively.Results IVAPs were implanted successfully in all 246 patients.Complications included thrombosis in 10 patients,infection in 6,blockage in 1 and leakage in another.IVAPs were removed from 15 patients with complications.Conclusions The prevention and management of complications in IVAP are important for the patients embedded with IVAP.

To clone and express 27 kDa cysteine protease (CP) gene of Spirometra erinacei plerocercoid,and analyze the biology characteristics,a total of RNA was extracted from the plerocercoids and reversely transcribed into cDNA.The 27kDaCP gene was amplified by PCR and cloned into pM-19T vector for sequencing.The accurate sequence was subcloned into the expression vector pET-28a (+).The recombinant plasmid was transformed into Transetta (DE3) and the expression protein induced by IPTG.The recombinant protein was purified by Ni2 + affinity chromatography,and analyzed by SDS-PAGE and Western blotting.The 27 kDa CP gene and its expression protein were predicted and analyzed by bioinformatics analysis tools such as NCBI and ExPASy.Results showed that the ORF length of 27 kDa CP gene sequence was 1 011 bp,and the removed signal peptide sequence was 954 bp with the submission number of ANA52569 in GenBank.The whole sequence of 27 kDa CP (Mr 35 669.9,pI 5.92) was 317 amino acids conferred from cDNA,which belongs to the Peptidase_C39_like superfamily.The pET-28a (+)-27kDa-CP was expressed under the induction of IPTG.Western blotting analysis showed that the purified protein reach expectancy,and had better response with positive serum of Spirometra erinacei plerocercoid infection.In conclusion,the 27 kDa CP gene of Spirometra erinacei plerocercoid is successfully cloned and expressed and knowing coded sequences and bioinformatic.

Objective To study the clinical characteristics and treatment of neurofibromatosis type Ⅱ (neuro-fibromatosis type 2 ,NF2 ,bilateral acoustic neuroma) ,and the effects of auditory brainstem implant for treating to-tal deafness after bilateral acoustic neuroma resection .Methods One case of bilateral acoustic neuroma and all clini-cal data in terms of diagnosis ,treatment and hearing -speech rehabilitation after surgery were retrospectively stud-ied .Results The patient was a thirteen years old boy .His clinical symptoms were hearing loss on the right ear ,tin-nitus ,hoarseness and gait instability three years .MRI showed space occupying lesion in the cerebellopontine angle . The postoperative pathological diagnosis was bilateral acoustic neuroma .The initial switch -on was peformed six weeks after the surgery ,and confirmed that all electrodes generated listening responses .As the extension of recov-ery time ,the correct recognition rate of patients on the natural environment sound ,vowel ,monosyllabic were on the rise and the pure tone hearing threshold gradually decreased .The vowel correct recognition rate of postoperative 6 , 9 ,12 ,24 ,and 36 months were 14% ,18% ,20% ,24% ,and 20% ,respectively .The recognition rate of monosyl-labic and open words at each postoperative rehabilitation stage were 0 .Conclusion The clinical characteristics and treatment of bilateral acoustic neuroma were different from the unilateral acoustic neuroma .The individualized treat-ment should be followed .Auditory brainstem implant could be performed in patients with post - bilateral acoustic neuroma resection .The accurate location of the cochlear complex during the surgery was the crucial point for the success of ABI .

Objective:To explore the application of scenario simulation and rapid film reading training in the standardization of cervical vertebra DR examination in radiology department.Methods:Using the method of scene simulation in the examination room to take DR films of cervical vertebra, two senior technicians in charge evaluated and guided the deficiencies of junior technicians from the aspects of patient check, exposure conditions, body position placement, film printing, inspection safety and radiation protection. Every morning, DR images of cervical vertebra were randomly selected and read quickly, and the junior technicians should quickly browse the images within one minute and make quality control evaluation. Then the senior technician in charge pointed out the shortcomings of the evaluation and related improvement methods. After that, the technical specification manual of cervical vertebra DR was compiled based on the deficiencies and problems found by each technician, and 200 patients aged 18-55 years, without abnormal movement and no internal fixation before and after the establishment of standardization were randomly selected in group A (before standardization) and group B (after standardization). The image quality and repetition projection rate of group A and group B before and after the standardization were compared. SPSS 25.0 was used to analyze the data.Results:The image quality score of group B (8.83±0.33) was higher than that of group A (8.45±0.30), and the repetition projection rate of group B (2%) was lower than that of group A (9%), with statistical significance ( P<0.05). Conclusion:Through the training mode of rapid film reading and scenario simulation, the standardization of cervical vertebra DR examination technology suitable for the situation of the department has been established, which effectively solves the problem of abstraction in the technical teaching of radiology department. The standardization establishment plays an important role in standardized training, for which, the technicians can quickly grasp the work process of the department and the corresponding examination technology during participating in the standardization establishment and training process.

Objective To investigate the effects of echocardiography-guided pacemaker parameters optimization in order to enhance the efficacy of cardiac resynchronization therapy(CRT).Methods Seventeen patients with chronic heart failure received biventricular resynchronous pacing therapy.A-V delay and V-V delay was optimized under the guiding of spectral Doppler echocardiography and tissue Doppler imaging.Results The indices of heart function in all patients were significantly improved after the treatment.The NYHA class of the patients was improved from class Ⅲ～Ⅳ to class Ⅱ～Ⅲ.Since PAV/SAV was optimized to 130-180/100-150 ms,left ventricular filling time(LVFT) was increased from (354±147)ms to (420±112)ms,mitral reflux (MR) was decreased from (8.41±4.55)cm2 to (5.36±4.71)cm2.After VV delay was optimized to 4-40ms,standard deviation of time to regional peak systolic velocity (Ts-SD-12) was decreased from (48.4±17.9)ms to (30.2±18.6)ms,left ventricular outflow tract velocity time integral(VTI LVOT) was increased from (20.6±9.0)cm/s to (26.1±3.1)cm/s.Conclusions Echocardiography-guided optimization of the pacemaker parameters is necessary in order to enhance the efficacy of CRT.

Objective To evaluate the value and feasibility of tissue mitral annular displacement (TMAD) in the assessment of left ventricular global and segmental longitudinal systolic function and synchronization in patients with hypertrophic cardiomyopathy.Methods The study population consisted of 39 on-obstructive hypertrophic cardiomyopathy (nHCM) patients and 39 healthy volunteers matched by gender and age.Left ventricular global and segmental longitudinal were measured by speckle tracking imaging(STI).The mitral annular displacement (MAD) (anterioseptal,posterioseptal,anterior,lateral,posterior and inferior sites,respectively),peak of time (PT) and left ventricular systolic dyssynchrony index (SDI) were measured by TMAD.The correlation between LSR and MAD was analyzed,and the parameters of MAD and SDI for tow groups were compared.Results The rate of effectively track segments of TMAD was significantly higher than that of STI(98.7％ vs 77.9％,P ＜0.001).There were high correlationship between segmental LSR and MAD(r =-0.784,P ＜0.001),and global and MADglobal (r =-0.897,P ＜0.001).Compared with the control group,MAD of six spots and MADglobal were significantly decreased (P ＜ 0.001,respectively),SDI was significantly increased(P ＜0.001).Conclusions TMAD is a sensitive and reproducible method for the assessment of LV longitudinal functionin patients with nHCM.

Objective To investigate the clinical value of serum insulin-like growth factor-1 (IGF-1),insulin-like growth factor-binding protein-3 (IGFBP-3) and mean height standard deviation score(HtSDS) in recombinant human growth hormone (rhGH)-treated small for gestational age (SGA) children.Methods 32 cases of SGA failed of catch-up growth were subcutaneously injected with rhGH every night before bed at a dose of 0.15-0.20u· kg-1 · d-1.And the variation of serum IGF-1,IGFBP-3,HtSDS,body height and growth velocity (GV) were monitored at 3,6,9 and 12 months of the treatment and compared.Results The GV (cm/years) increased to (12.4 ± 3.2),(11.0 ± 2.3),(10.1 ± 3.5),(9.4 ± 1.8) versus (4.1 ± 0.5) before treatment,suggesting a significant catch-up growth after treatment (F =51.35,P ＜ 0.01).Accordingly,HtSDS increased to (-2.55 ± 0.73),(-2.39 ± 0.65),(-2.21 ± 0.58),(-2.09 ± 0.94) versus (-2.81 ± 0.64),suggesting that height gaps were reduced compared to the normal children of the same age and sex after rhGH treatment (F =4.99,P ＜0.01).The serum levels of IGF-1,IGFBP-3 were significantly increased compared to pre-treatment (F =34.52,14.04,all P ＜ 0.01),especially for serum IGF-1,which maintained at a high level after 3 months of treatment and up to peak after 6 months.However,the ratio of IGF-1/IGFBP-3 showed no increase after treatment (F =1.82,P ＞ 0.05).There was a significant positive correlation between the serum level of IGF-1 and △HtSDS after the rhGH treatment within six months (r3 =0.72,r6 =0.91),while there was no correlation between them after 9 months (r9 =0.26,r12 =0.33).There were no serious adverse events during the rhGH treatment.Conelusion The serum levels of IGF-1,IGFBP-3 were significantly increased after the rhGH treatment,especially for serum IGF-1.There was a significant positive correlation between the serum level of IGF-1 and △HtSDS within six months,but not after 9 months.The rhGH treatment could be a safe and effective strategy for SGA children.

Objective To investigate the immunization effect of influenza A/H1N1 vaccine in health care workers (HCW) in Inner Mongolia Greater Khingan Mountains area. Methods Five hundred and five HCW who received A/H1N1 influenza vaccination (immunized group) and 129 staffs who didn't receive the vaccination (unimmunized group) were randomly sampled for semiquantitative testing of serum H1N1 antibody (IgG) levels by enzyme-linked immunosorbent assay (ELISA).Results were analyzed and stratified by age, sex, occupation and the time interval between the time of vaccination and serum sample collection. The antibody positive rates of the two groups were compared by x2test. Results There were 401 (79. 4%) HCW whose H1N1 antibody were positive and 50 (9.9%) whose antibody were weak positive among 505 immunized HCW. While among 129 unimmunized HCW, there were 59 (45.7%) whose antibody were positive and 15 (11.6%) whose antibody were weak positive. The seroconversion rates of specific antibody were not significantly different among the different age groups after receiving A/H1N1 influenza vaccine (P＞ 0.05).However, there were statistical differences of the seroconversion rates among different sex groups (men 95.7% vs women 87.4% in immunized group, x2=6.40, P＜0.05; and men 73.3% vs women 52.5% in unimmunized group, x2 =4.07, P＜0.05) and different occupation groups (doctor 86.0% vs nurse 94.5% in immunized group, x2 = 9. 16, P＜0.01; and doctor 43. 8% vs nurse 75.0% in unimmunized group, x2=12.61, P＜0.01 ). The seroconversion rate was 81.5% after 80 to 89 days of vaccination, which was significantly lower than those after 30 to 39, 50 to 59 days and 60 to 69 days of vaccination, which was 100.0%, 94.7% and 93.6%, respectively (x2 =3.96, P ＜0.05; x2=7.15, P ＜0. 01; x2 = 9. 98, P＜0. 01). Conclusions A/H1N1 influenza vaccination can induce effective immune response in HCW in Greater Khingan Mountains area of Inner Mongolia. However,the level of specific antibody significantly reduces after 80 to 89 days of vaccination.

Objective To observe the hemodynamic changes of acute after cardiac resynchronization therapy(CRT) interruption in patients with chronic heart failure (CHF),and explore the benefit of hemodynamic of the reverse remodeling and non-reverse remodeling CHF patients during CRT.Methods 46 CHF patients who had undergone implantation of CRT device for more than 6 months were enrolled in the study.The reverse remodeling and non-reverse remodeling were identified by reduction of LV end-systolic volumes ≥ 15％.The two groups underwent echocardiography,and mitral regurgitation area (MRA),velocity time integral of aortic valve (VTI-AV),velocity time integral of mitral valve(VTI-MV),maximum rising rate of left intra-ventricular pressure(+ dp/dtmax),LVFT/T were measured in on and off mode of CRT.Hemodynamic indicators of two groups were compared in CRT on and off modes.The rate of changes of above mentioned parameters ΔMRA,ΔVTI-AV,ΔVTI-MV,Δdp/dt and ΔLVFT/T were calculated and compared in the two groups.Results MRA had significant increasing in both group after 10 minutes intereuption of CRT (P ＜0.01).Two groups had significant worsening of VTI-AV,VTI-AV,+ dp/dtmax and LVFT/T after 10 minutes interruption of CRT as compared to CRT-on mode (P ＜0.05).ΔMRA,ΔVTI-MV,Δdp/dt of reverse remodeling group significantly higher than non-reverse remodeling group(P ＜0.05).But there was no difference in ΔVTI-AV and ΔLVFT/T(P ＞0.05).Conclusions The hemodynamic index become worsening after 10 minutes interruption of CRT in both group of medium-and long-term CRT patients especially in reverse remodeling group,suggesting that patients of both groups have obtained hemodynamic benefits continuously during CRT.Reverse remodeling group get more benefits than non reverse remodeling group.