Objective To retrospect and probe the clinical applied value and the results of iliac bone with the deep circumflex iliac vessel transplantation for the treatment of avascular necrosis of femoral head.Methods With a composite procedure including synovectomy,fenestration,curettage and vascularized iliac bone graft with pedicle of the ipsilateral deep circumflex iliac vessels.Results Follow-up period average 2 years 8 months(range:for 6 month-5 years) and all patients were roentgenographied.According to new grading treatment system four items and six grades for avascular necrosis of femoral head was evaluated.Excellent and good rate was 84 4%.Post-operative radiological assessment demonstrated that there was no incidence of deterioration or further collapse of the femoral head and certain extent of re-sphering and re-surfacing of the head was observed in all of the collapsed heads.Conclusions The results of this study suggest that the technique is suitable for the treatment of avascular necrosis of femoral head of the stage Ⅰ Ⅱ Ⅲ and younger patients of late stage.

OBJECTIVE:To synthesize ternary complex of rare earth with L-Leucine and imidazoles and to determine its properties.METHODS:The ternary solid complex was synthesized from the reaction of rare earth chlorate with L-Leucine and imidazoles in the medium of alcohol,and the compositional analysis,properties,mechanism of thermolysis,thermostability and the bacteriostatic action of the ternary complex were studied by chemistry analysis,chemical elements analysis,infrared spectral(IR)analysis,molar conductivity measurement and derivative thermogravimetry(TG-DTG)analysis,bioactivity experiments etc.RESULTS:The constitute structure of the ternary complexes was detected to be electrolyte1∶3type RE(Leu) 3 Im(H 2 O)Cl 3 ?2H 2 O,meanwhile,the thermolysis dynamics,thermostability and the bacteriostatic action against E coli of the ternary complex were established preliminarily.CONCLUSION:The composition and the property of the ternary complexes are stable and which were found to be of good bacteriostatic action in the preliminary examination.

Objective: To explore the impact of atrial fibrillation (AF) on clinical outcomes in patients with cardiac resynchronization therapy (CRT). Methods: A total of 258 arrhythmia patients who received CRT in our hospital from 2010-01 to 2014-12 were retrospectively enrolled. According to AF occurrence, the patients were divided into 2 groups: AF group,n=42 and Non-AF group,n=216. The end point events were deifned by heart failure (HF) re-admission and all-cause death (including heart transplantation). Survival curve was drawn by Kaplan-Meier method, clinical prognosis was comparedbetween 2 groups with log-rank test and the impact of AF on end point prediction was analyzed by uni- and multivariate Cox proportional-hazards regression models. Results: There were 16.3% (42/258) patients combining AF. The following indexes were statistically different between AF group and Non-AF group: patients' age, the ratios of male gender and left bundle branch block (LBBB), eGFR, blood levels of creatinine, uric acid, big endothelin-1, left atrial diameter and application of amiodarone. With the median of 22 months follow-up study, there were 33/258 (12.8%) patients died, 5 (1.9%) received heart transplantation and 72 (27.9%) with HF re-admission. Survival analysisindicated that HF re-admission rate in AF group was higher than Non-AF group (χ2=6.651,P=0.010), all cause mortality was similar between 2 groups (χ2=0.528,P=0.468). Univariate Cox proportional-hazards regression analysis showed that AF, LBBB, higher blood levels of creatinine, big endothelin-1 and large left atrium were the suspiciousrisk factors for HF re-admission; increased blood levels of creatinine, big endothelin-1 and large left atrium were thesuspiciousrisk factors for all cause death. Multivariate Cox proportional-hazards regression analysis presented that AF was not the independent risk factor for HF re-admission and all-cause death, while largeleft atrium was the independent risk factor for HF re-admission (HR=1.041, 95% CI 1.007-1.075,P=0.018); large left atrium and increased serum creatinine were the independent risk factors for all cause death (HR=1.045, 95% CI 1.001-1.091,P=0.048) and (HR=1.008, 95% CI 1.001-1.015,P=0.035) respectively. Conclusion: AF was associated with the higher rate of HF re-admission in CRT patients; while no clear evidencesupported that AF was the independent risk factor for HF re-admission and all cause death in CRT patients.

Objective To investigate the value of femoral neck fracture(FNF) typing by digital subtraction angiography(DSA) in prognostic prediction of the fracture healing. Methods From June 2005 to June 2008,45 patients were admitted to our hospital for treatment of single femoral neck fracture.They were 26 males and 19 females,aged from 26 to 60 years(average,45.4 years).Their fractures were all typed according to DSA results.Type Ⅰ ( 15 patients) were DSA pictures which showed 3 to 6 supporting band vascular images crossing the fracture line.Type Ⅱ(14 patients) were DSA pictures which showed one to 2 supporting band vascular images crossing the fracture line.Type Ⅲ(16 patients) were DSA pictures which showed no supporting band vascular images crossing the fracture line.All cases underwent close reduction and internal fixation with cannulated screws under C-arm fluoroscopy.The prognoses of all the patients were evaluated according to their symptoms and imaging examinations in terms of avascular necrosis of femoral head (ANFH) and fracture healing. Results All the patients obtained an average follow-up of 36.7 months (from 24 to 60 months).In patients of DSA type Ⅰ,the ANFH rate and nonunion rate were respectively 0 and 13.3％ (2/15).In patients of DSA type Ⅱ,the ANFH rate and nonunion rate were respectively 7.1％ (1/14) and7.1％(1/14).In patients of DSA type Ⅲ,the ANFH rate and nonunion rate were respectively 100％ (16/16) and 0.The ANFH rate following FNF treatment was negatively related to age and the vascular number showed by DSA.The nonunion ratewas positively related to age but not significantly associated with the vascular number showed by DSA. Conclusion DSA has a significant value in predicting the prognosis for patients with femoral neck fracture.

Objective:Adenoid cystic carcinoma (ACC) is an uncommon malignant neoplasm, which mostly originates from the major and minor salivary glands of the head and neck region. This study aims to provide new information on head and neck ACC with cervical lymph node metastasis. Methods:Out of the 616 patients who underwent primary tumor resection from 1995 to 2008 in the authors' hospital, 62 cases with cervical lymph node metastasis were analyzed. Results:The general incidence rate of cervical lymph node me-tastasis in ACC was approximately 10%. The base of the tongue, mobile tongue, and mouth floor were the most frequent sites of lymph node metastasis with incidence rates of 19.2%, 17.6%, and 15.3%, respectively. Most cases exhibited the classictunnel-stylemetastatic pattern of occurrence, and the levelⅠb andⅡregions were the most frequently involved areas. Primary site and lympho-vascular invasions were significantly associated with lymph node metastasis. High patient mortality rate was also significantly correlat-ed with a high number of lymph node positive cases. Conclusion:Cervical lymph node metastasis has a high tendency of occurrence in the tongue-mouth floor complex, following the classictunnel-stylemetastatic pattern. Peritumoral lymphovascular invasion could be taken as a strong predictor for the occurrence of lymph node metastasis, which ultimately leads to poor prognosis of ACC patients. A selective neck dissection should be considered as a management in such patients.

Objective: To create and validate a scoring system for predicting clinical prognosis in patients with cardiac resynchronization therapy (CRT). Methods: A cohort of 367 consecutive patients received CRT in our hospital from 2010-01 to 2015-12 were enrolled. The endpoint follow-up events were all-cause death including heart transplantation and heart failure re-admission. The patients were randomly categorized into 2 groups: Modeling group, to develop HEAL scoring system,n=300 and Veriifcation group, to validate HEAL model,n=67. HEAL system was established by Cox proportional hazards regression model, discrimination between HEAL and EARRN scoring systems was evaluated by AUC of ROC, HEAL calibration was assessed by Hosmer-Lemeshow test and clinical endpoint evaluation by 2 scoring systems were compared by Kaplan-Meier method. Results: Modeling group analysis indicated that hs-CRP (HR=1.137, 95% CI 1.072-1.205,P<0.001), big endothelin-1 (HR=1.934, 95% CI 1.066-3.507,P=0.03), left atrial diameter (HR=1.045, 95% CI 1.007-1.084,P=0.02) and NYHA IV (HR=2.583, 95% CI 1.331-5.013,P=0.005) were the independent risk factors of adverse prognosis in CRT patients. Based on β partial regression coefifcient, HEAL scoring system was established to classify the patient's risk levels: low risk<4, moderate risk 4-10 and high risk>10. AUC for risk classification in Modeling group and Verification group were 0.719(95% CI 0.629-0.809) and 0.708 (95% CI 0.539-0.878), HEAL can well distinguish clinical prognosis in patients at different risk levels (log-rank test showed in Modeling groupP<0.001 and in Veriifcation groupP=0.002); Hosmer-Lemeshow test presented good calibration,P=0.952. All 367 patients were respectively evaluated by HEAL and EARRN scoring systems, HEAL had the better discrimination than EARRN as AUC 0.763 (95% CI 0.692-0.833) vs AUC 0.602 (95% CI 0.517-0.687). Conclusion: HEAL scoring system can effectively predict adverse prognosis in CRT patients, it had the better discrimination than EARRN system and was valuable to distinguish high risk patients in clinical practice.

Objective To investigate the methods and internal quality control ( IQC ) leucorrhea routine examinationin clinical laboratories of medical institutions in Guizhou Province.Methods In 2009, 97 clinical laboratories were randomly selected for the first investigation.At the same time, staffs in theinvestigated laboratories were educated on the importance of IQC.The second investigation of the same items was carried out in 2011 inthe same laboratories.The results of the two investigations were analyzed byChi-square test.Results 2009 and 2011 numbers of laboratories thoseonly used normal saline suspension method for leucorrhea examination were 17and 16 (χ2 =0.037, P >0.05 ) respectively, used bothnormal saline and 10%KOH suspension methodswere 16and 2(χ2 =12.003,P<0.01), used staining method were 64and 79(χ2 =5.488,P<0.05), both used suspension and staining methods were 60and 73(χ2 =4.041, P<0.05), used normal salinesuspension method combined with Wright stain and Gram staining methods were3and 28(χ2 =23.996,P<0.01) respectively.Numbers of Laboratoriespracticing IQC were 2and 88in 2009 and 2011 respectivly(χ2 =153.293,P <0.01).Conclusions Currently, the most common used method for leucorrhea routine examination is suspension.Through the investigations and education, the quality ofleucorrhea routine examination was improved in Guizhou Province.

Objective To establish an external quality assessment ( EQA) system of genitourinary tract secretions routine testing in Guizhou Province and improve the overall testing level.Methods From 2009 to 2011, more than 50 clinical laboratories in different grade hospitals from Guizhou Province were enrolled as participating units every year.EQA was carried out twice a year.Each time, five slides of high quality Wright′s or Gram stain smear of the genitourinary tract secretions or photographs obtained from these smears were selected to send to the participating laboratories for testing, and the feedback results from each laboratory were analyzed.The qualification was judged by the coincidence rate equal to or more than 80%. The average coincidence rates of each time and each year were statistically analyzed by Chi-squared test. Results From 2009 to 2011, the number of EQA participating units increased from 55 to 96, with an average return rate of >80%.Coincidence rates <80%of the 6 EQA results in the 3 years were as follow:four times for coccobacteria (73.7%,77.8%,61.1%,77.1%), twice for bacillus (75.6%,79.3%) and coccobacillus (64.3%,52.1%), once for infusorian (79.7%), epithelial cells (76.1%), neutropenia (75.7%) and cleanliness (71.3%).There were six batches of 30 quality assessment controls (accounting for 20.0%) in the six EQAs had the coincidence rate of <80%.Eleven items of 30 quality assessment controls with 1 to 15 batches were unqualified ( average coincidence rate of<80%) respectively.The item with the highest total average coincidence rate was suspected gonococcus (94.2%), and two items with the lowest total average coincidence rates were coccus and coccobacillus ( 77.0%, 75.2%, respectively ) . Conclusions This EQA program carried out within a certain range of clinical laboratories achieved good results:participating units increased significantly;the total score of all the items showed an obviously upward trend;the quality awareness of clinical lab technicians has enhanced to a certain extent.In this study, EQA system of genitourinary tract secretion routine testing were preliminarily established in Guizhou province, which provided a reference model of internal quality control ( IQC ) and EQA for clinical laboratories and higher authorities, and will be bound to have a positive impact on improvement of the overall level of genitourinary tract secretion routine testing.

Background and Objectives: Preimplantation QRS-T morphology screening (TMS) is a composite tool for selecting subcutaneous implantable cardioverter defibrillator (S-ICD) candidates. However, its role in predicting the patient's response to cardiac resynchronization therapy (CRT) is uncertain. Methods: A total of 55 consecutive de novo CRT candidates were enrolled between January 2016 and March 2017. Electrocardiogram (ECG) and TMS were performed before and soon after implantation. The ECG parameters were recorded, including QRS duration and morphology (such as ΔQRS_Index, QTc during biventricular pacing mode [BiV pacing QTc], and QRS/T ratio during biventricular pacing mode [BiV pacing QRS/T ratio]). TMS monitored three sensory vectors of the S-ICD. Six months after implantation, the responses to CRT were evaluated. Results: Thirty-nine patients (70.9%) passed the TMS during biventricular pacing mode. At the six-month follow-up, the number of responders and super-responders was significantly higher in the passing group than in the non-passing group (responders: 31/39 [79.5%] vs.5/16 [31.3%], p<0.001; super-responders: 9/39 [23.1%] vs. 1/16 [6.3%], p=0.020). The superresponse rate was higher among patients who passed all three vectors than among those who passed 1 or 2 vectors (3 vs. 2 vectors, p=0.018; 3 vs. 1 vector, p=0.003). A smaller left atrial diameter, vectors that passed TMS during biventricular pacing mode, and larger ΔQRS_Index values were independently associated with good CRT response. Conclusions Our study demonstrated that patients on CRT who pass the TMS during biventricular pacing mode are more likely to respond and super-respond to CRT.

Objective To establish genotyping methods for vitamin K epoxide reductase complex subunit 1 (VKORC1)and cytochrome P450 2C9(CYP2C9)based on pyrosequencing technique to detection of warfarin metabolizing enzyme related gene polymorphisms.Methods A total of 50 peripheral blood samples from healthy adults were collected and the whole blood genomic DNA was extracted.A set of biotin-labeled amplifi-cation primers and sequencing primers were designed respectively for three SNP sites:VKORC1 -1639 G>A,CYP2C9 430C> T and CYP2C9 1075A>C.After PCR amplification of the samples,pyrophosphoric acid se-quencing was conducted.And then the signal peaks form were combined to analyze and determine each sample genotype.Genotyping results were verified by Sanger sequencing,and the consistency of the two sequencing methods was compared.Results Genotypes of the three SNPs can be clearly determined according to the ba-ses and height of the signal peaks.Among the 50 samples,there were 41 AA and nine AG for VKORC1 -1639G>A,accounting for 82% and 12% respectively,and there were 45 *1/*1,five *1/*3 for CYP2C9, accounting for 90% and 10% respectively,no CYP2C9*2 allele detected.Genotype results detected by pyrose-quencing and Sanger sequencing were consistent with each other.Conclusion In SNP genotyping,Pyrose-quencing has the advantages of convenience,time-saving,cheap with accurate and reliable results,which can quickly determine the genotypes of CYP2C9 and VKORC1.