Objective: To investigate the influencing factors and population attributable risk percent (PAR%) of low back pain in automobile assemblers. Methods: A total of 634 assemblers from 11 automobile manufacturers in Shiyan City, Hubei Province were chosen as research subjects using judgment sampling method. The prevalence of low back pain in the past one year was investigated using Musculoskeletal Disorders Questionnaire. PAR% was used to analyze the contribution of influencing factors to low back pain. Results: The annual prevalence of low back pain was 68.8%. The results of multivariate logistics regression showed that length of service>15 years, high school or secondary college education or above, standing most of the time, sitting most of the time, the proportion of cumulative time of poor posture in work shift time ≥1/8, and bending for insufficient height of working space were the risk factors for low back pain (all P<0.05). The PAR% of the proportion of cumulative time of poor posture in work shift time ≥1/8 was 43.0%, 37.8% for standing most of the time, and 12.8% for bending for insufficient height of working space. Conclusion: The annual prevalence of low back pain was higher in automobile assemblers. The influencing factors included individual factors and occupational factors. The proportion of cumulative time of poor posture in work shift time ≥1/8, standing most of the time and bending for insufficient height of working space should be taken as the priority intervention factors to reduce the prevalence of low back pain among assemblers in this enterprise.

Objective:To evaluate the effectiveness and safety of anticoagulant therapy with rivaroxaban in atrial fibrillation( AF) pa-tients after radiofrequency catheter ablation( RFCA) . Methods:A retrospective analysis was performed in the study. Totally 141 AF pa-tients with RFCA in our hospital were enrolled from January 2014 to October 2015. The patients were divided into rivaroxaban group(70 patients)and warfarin group (71 patients). In rivaroxaban group,rivaroxaban(10 mg, po,qd)was given for at least 3 months after RFCA. In warfarin group,low molecular heparin (100 IU·kg-1,ih) was given before RFCA, and standard dose of warfarin (3-5 mg,po,qd) was given for at least 3 months by adjusting the INR within the range of 2. 0-3. 0 after RFCA as bridging therapy. The death rate, throm-boem bolism events and bleeding events between the groups were evaluated and companed groups. Results: There were no significant differences in baseline characteristics between the groups except the diastolic pressure. There were no significant differences in the death and thromboembolism events(transient cerebral ischemia , ischemic encephalopathy, 2/70 vs 4/71,P>0. 05)between the groups. There were no TIMI major bleeding events in both groups. There were no significant differences in minor bleeding events between the groups (3/70 vs 4/71,P>0. 05). Conclusion: Compared with those of warfarin,the effectiveness and safety of rivaroxaban show the similar effect in AF patients after RFCA. Rivaroxaban can be safely and effectively used in AF patients with low or middle risk of thromboembo-lism after RFCA.

OBJECTIVE:To compare the efficacy and safety of dabigatran and warfarin respectively used in atrial fibrillation patients after radiofrequency ablation(RFCA). METHODS:Data of 141 nonvalvular atrial fibrillation patients,who scheduled for RFCA,were retrospectively analyzed and divided into warfarin group(71 cases)and dabigatran group(70 cases)by different med-ication. Patients in warfarin group should stop warfarin if they took before,then changed to Low molecular weight heparin calcium injection 100 U/kg,subcutaneous injection,taking RFCA when INR was lower than 1.5,stopping low molecular weight heparin 12 h before surgery;Low molecular weight heparin calcium injection 100 U/kg was intravenously injected when surgery;orally tak-ing Warfarin sodium tablet 4.5 mg after 4-6 h,once a day,meanwhile bridged overlapping treated at least 3-5 d with low molecu-lar weight heparin;monitoring once INR every 3 d after surgery,maintaining INR 2.0-3.0,taking warfalin at least 3 months. Pa-tients in dabigatran group stopped taking the anticoagulant drugs when admission,then changed to Dabigatran etexilate capsule 110 mg(age≥70 years old or body mass<60 kg)or 150 mg(age<70 years old or body mass≥60 mg),twice a day;stopping dabig-atran 24 h before surgery,the same medication as warfalin group when surgery;orally taking dabigatran after 6 h,taking at least 3 months. The total mortality rate,incidence of stroke(transient cerebral ischemia,ischemic encephalopathy),peripheral thrombosis rate and incidence of bleeding after 1 and 3 month(s)in 2 groups were observed. RESULTS:There were no significant differences in the total mortality rate,incidence of stroke,peripheral thrombosis rate and incidence of bleeding after 1 and 3 month(s) in 2 groups(P>0.05). CONCLUSIONS:Dabigatran has similar anticoagulant efficacy and safety with warfarin in atrial fibrillation pa-tients after RFCA.

Objective To elucidate the inhibitory effect of 131I-fulvestrant on the growth of human breast cancer cells and the effect on the important organs.Methods MTT assay was used to clarify the difference in killing effects of the 131I-fulvestranton on MCF-7 cells and MDA-MB-231 cells.Breast cancer MCF-7 cell xenografts in nude mice was establishied,and two different administration methods of the 131I-fulvestrant in the MCF-7 cell to nude mice were given respectively.Organs and tumours of nude mice were observed.Results MTT assay demonstrated that 131I-fulvestrant had similar cytotoxicity against MCF-7 cells and MDA-MB-231 cells,and the former was slightly stronger.Transient contact experiments showed that 131I-fulvestrant could play a tumor suppressor effect on MCF-7 cells continually,but MDA-MB-231 cells wasn't.After the injection of 131I-fulvestrant via caudal vein,the radioactivity concentration on tumor site accounted for (4.33 ± 0.28)％ of the total injection,and the volume of the tumor reduced before gradually increasing again.Radioactivity in the blood accounted for (20.76 ± 2.54)％ of the total injection.Qrgans like liver and kidney also showed radioaction distribution.Its distribution was accorded with the distribution of estrogen receptor.Local injection of 131I-fulvestrant got powerful killing effect on the tumor,and the distribution of the radioaction was mainly confined within the tumor.Conclusion 131I-fulvestrant has a good inhibitory effect on MCF-7 breast cancer cells,which is a superposition of radiotherapy and endocrine therapy,and it is controllable on the general condition and important organs of nude mice.

Objective:To evaluate the curative effect and safety of fasudil hydrochloride injection in the prevention and treatment of aneurysm postoperative cerebral vasospasm by meta-analysis. Methods: The randomized controlled trials were retrieved from PubMed, EMBASE, Cochrane Library, VIP, Wangfang, CNKI and so on. Meta-analysis was conducted using RevMan 5. 0 software. Results:Totally 418 reference studies were screened, from which 11 ones were chosen including 786 patients in all. In the treatment of cerebral vasospasm (CVS), there was no significant difference between the groups (OR=1. 56, 95%CI:0. 95-2. 58, P>0. 05). While in the prevention of CVS, the incidence rate of CVS in fasudil group was significantly lower than that in nimodipine group ( OR=0. 43, 95%CI:0. 23-0. 81, P=0. 008). However, the incidence rate of ADR in fasudile group was higher than that in nimodipine group (OR=0. 43, 95%CI:0. 25-0. 75,P=0. 003). Conclusion:In the prevention of CVS, fasudil may be better than nimodipine, while the incidence of ADR is higher.

Objective To estimate the radiation dose and cancer risk of thyroid for children who underwent head CT or chest CT scans.Methods The parameters used in the CT scans were accessed from the DICOM files through PACS used DCMTK software, then the thyroid radiation dose was estimated with the CT-Expo(C) software and the cancer risk induced by CT scan was projected based on BEIR Ⅱ model combined with the Chinese cancer incidence and lifetime table in 2008.Results CT parameters used for different ages were roughly the same, the thyroid equivalent dose for head CT ranged from 1.2-2.0 mGy, the highest thyroid cancer risk occurs for newborn girls, about 9.6/100 thousand population;while for chest CT the thyroid equivalent dose ranged from 8.1 to 38.0 mGy, the highest thyroid cancer risk was also for newborn girls, about 244.7/100 thousand population.The radiation dose and cancer risk for thyroid decreased with the increased age.Conclusions The radiation dose for thyroid from chest CT was relatively higher than head CT, especially for newborn babies;therefore more protection should be given to the thyroid and other radio-sensitive organs during CT scanning.

Objective To evaluate the efficacy and safety of transjugular intrahepatic portosystemic shunt (TIPS) combined with gastroesophageal variceal embolization (SEVE) in the treatment of patients with gastroesophageal varices accompanied by a gastrorenal shunt with a diameter over 5 mm .Methods From October 2013 to December 2014 ,the clinical data of 18 patients with portal hypertension caused gastroesophageal variceal bleeding and treated by TIPS combined with SEVE were collected . The difference of portosystemic pressure gradient between before and after operation was observed ,and Child‐Pugh score before and after operation was also evaluated .The hemostasis in 24 hours ,TIPS patency ,the occurrence of hepatic encephalopathy(HE) ,rebleeding ,hepatic failure ,mortality and the change of liver function and thrombocytopenia were recorded after operation .Student′s t‐test or analysis of variance was performed for statistical analysis of measurement data .Results In the 18 patients ,the average portal vein pressure decreased from (34 .23 ± 6 .35) cmH2O (1 cmH2O= 0 .098 kPa) before operation to (25 .69 ± 6 .89) cmH2O after TIPS combined with SEVE ,and the difference was statistically significant (t=7 .572 , P<0 .01) .The difference of portal vein pressure before and after operation was (8 .54 ± 4 .79) cmH2O . No hepatic failure was observed in all 18 patients .Among 10 patients with emergency operation ,nine patients obtained successful hemostasis in 24 hours .No operation related complications were observed in all the patients .During the follow‐up period of 18 patients ,two patients had variceal rebleeding confirmed by endoscopy ;one patient had stent stenosis;three patients got HE and one patient died .At different follow‐up time point of patients ,there was no significant difference in Child‐Pugh score ,blood ammonia level ,albumin level ,bilirubin level ,white blood cell count and blood platelets count compared with those before operation (all P>0 .05) .Conclusion TIPS combined with SEVE in the treatment of patients with gastroesophageal varices accompanied by a gastrorenal shunt with a diameter over 5 mm could effectively control bleeding ,and no ectopic embolism happened .

Objective:To analyze the effect of simvastatin combined with tanshinone in the treatment of patients with acute cere-bral infarction. Methods:The patients with acute cerebral infarction were randomly divided into the treatment group (n=50) and the control group (n=50). The control group was given tanshinone treatment, the treatment group was given simvastatin treatment addi-tionally, and the treatment course was 14 d. The NIHSS ( nerve function defect degree) , ADL ( daily life activity) and the treatment effect before and after the treatment were comprehensively evaluated and compared between the two groups. Results: Compared with those before the treatment, the NIHSS and ADL scores were significantly improved in the two groups after the treatment, and the differ-ences were statistically significant (P<0. 05), and the improvement in the treatment group was significantly better than that in the control group with statistical significance (P<0. 05). The total effective rate of the observation group was 98%, which was higher than that (70%) in the control group (P<0. 05). Conclusion: Simvastatin combined with tanshinone in the treatment of acute cerebral infarction shows obvious therapeutic effect, which can obviously improve neurologic deficits and daily life activity, and is worthy of fur-ther clinical application.

Objective To evaluate two treatment schemes of liver protection and choose the optimal radiotherapy using phar‐macoeconomics principle and methods .Methods In‐patients who were diagnosed as decompensated cirrhosis patients and simultaneously conformed to the Chlid‐Pugh graduation of level B‐C during 2010-2012 were chosen .The chosen patients were divided into A ,B and C group separately ,and were treated with the compound prescription of dichloro acetic acid two isopropyl amine inoculation fluid ,the poly‐ene phosphatide acid radical choline inoculation fluid ,and the compound prescription dichloro acetic acid two isopropyl amine inoculation fluid and the polyene phosphatide acid radical choline inoculation fluid .Cost effectiveness analysis was done between group B and C .Re‐sults Treatment time of group B and C was (15 .5 ± 8 .55) d and (12 .13 ± 7 .61) d respectively .The total effectiveness was 50% and 60% respectively and the difference was with non‐statistics significance (P>0 .05) .The total cost was (1 640 .52 ± 905 .26) yuan and (2 576 .51 ± 1 615 .99) yuan respectively .Conclusion Group B was the better treatment scheme .

Objective: To discuss the pharmaceutical care experience of clinical pharmacists in the antibacterial agents application in one patient with infection after coronary artery bypass graft ( CABG) . Methods:The clinical pharmacist participated in the treatment of the patient after CABG. According to the relevant laboratory indices and the extent of the infection combined with the vital signs of the patient, the pharmacist formulated and adjusted the anti-infection therapeutic regimen. The therapeutic effects and adverse reactions were observed as well. Results: Safte and high-quality individualized pharmaceutical service was provided to the patient by the pharmaceutical care of the clinical pharmacist in anti-infection treatment. Conclusion:Through the above practice, clinical pharmacists have played a positive role in reasonable using of anti-infective drugs in patients with cardiac surgery.