Objective To explore the most effective formula to predict the catheterization length of the right internal jugular vein by an-terior approach. Methods Sixty-seven cases performed with right internal jugular vein catheterization from January 2013 to June 2013 were enrolled in this study and 4 formulas were selected to predict the catheterization lengths. Comparing their predicted lengths with the actual lengths defined as the lengths of the internal catheters which terminals were inserted to a accurate position,and analyse their predictive validi-ty. Results The predictive error percentages of the 4 formulas were all less than 15%. Comparing the predicted lengths and the actual lengths, there was no difference between the predicted length of the 1st formula and the actual one(P>0. 05),and the predicted lengths of the other three formulas were significantly less than the actual ones(P<0. 05). Comparing the mean absolute predictive errors of the 4 formu-las in the 3 height groups of 150~159 cm,160~169 cm and 170~179 cm,respectively,those of the 4th formula were all significantly higher than those of the 1st formula in all the 3 groups(P<0. 05);and no differences between those of the 2nd or the 3rd formula and those of the 1st formula were observed(P>0. 05). Conclusion The predictive error of all the 4 formulas is less than 15%, and the 1st formula is simple,practical and associated with a much smaller error,more suitable to estimate the length of the right internal jugular vein catheterization by anterior approach.

Objective To explore the effect of comorbidities on the surgical outcomes of elderly patients with hip fracture. Methods The Age,gender,weight,type of fracture,preoperative comorbidities and surgical outcomes of 117 patients aged 80 yr or over who undergoing hip fracture surgery in our hospital were recorded. Patients were divided into rehabilitation group and postoperative in-hospital death group ac-cording to surgical outcomes. The potential predictors of postoperative in-hospital death were identified by univariate model and were then entered into multiple Logistic regression analysis. Results Twenty three patients(19. 7%)had no comorbidity,94 patients(80. 3%)had one or more comorbidities. Ten patients(8. 5%)died in hospital after the operation. Predictors of postoperative in-hospital death were preoperative respiratory diseases and three or more comorbidities. Conclusion Surgical outcomes of elderly patients with hip fracture may be predicted by analysing preoperative comorbidities. Preoperative preparations must be sufficient in order to ensure successful operation.

Objective A study on the loci variation characteristics of polymerase on area RT and it's clinical significance while a failure using Adefovir monotherapy antiviral treatment,by analyzing the HBV polymerase reverse transcription (RT) gene sequence of the serum from the chronic hepatitis B patients.Method By using retrospective analysis on the loci variation characteristics,clinical significance of polymerase on area RT and follow-up data from the 44 patients identified genetic mutations through the gene sequence of the HBV polymerase area RT,who had a virus re-activation after getting ADV mono therapy antiviral treatment.Result The 44 patients with Adefovir mono therapy,who had the mutation in area RT with the shortest treatment time eight months,up to five years,an average of(32.2 ± 6.7) months.The level fluctuations of the virus is between 103 copies/ml-108 copies/ml.After virological breakthrough,in these 44 cases,11 as A181T (25.0％),8 as A181V (18.2％),10 as 181T/N236T(22.7％),6 as A181V/N236T (13.6％),9 as N236T(20.4％); 40 cases (90.9％) appeared a biochemistry breakthrough,alanine aminotransferase index fluctuation during 37 IU/L-946 IU/L; Remedial treatment using combination lamivudine 23 cases,6 patients with jointing entecavir,than,1 case for jointing telbivudine,change single drug lamivudine in 4 cases,10 cases of single drug entecavir.Prognosis of severe disease (3 cases),and through the remedial treatment,42 cases was recovered.Conclusion ① RT area A181T (A181T/ N236T) variation accounted about a half of total(47.7％),after the drug resistance of the adefovir,2 years of follow-up,the incidence of liver cancer shows a higher trend than patients without A181T.②Conditions allowed,strong inhibitory effect medicines during tinitial therapy should be preferred,to low the incidence of drug-resistant HBV drug,avoid adverse events.

OBJECTIVETo study the clinical significance of hepatitis B surface antigen (HBsAg) levels and HBsAg/hepatitis B virus (HBV) DNA ratio in relation to liver inflammation in HBeAg-positive chronic hepatitis B (CHB).

METHODSOne hundred and fifty-three Chinese patients with chronic HBV infection with HBeAg-positive status were enrolled in the study.Quantitative measurements were made for HBsAg levels by immunoassay (Architect HBsAg QT by Abbott Diagnostic) and HBV DNA by real-time fluorescence quantitative PCR.Levels of liver function markers were measured by standard methods.Liver biopsy specimens were obtained from all patients and used to score the histology (liver inflammation) activity index (HAI) and grade (G) the extent of necroinflammation.Statistical correlation analysis was performed to determine the association of HBsAg titre or HBsAg/HBV DNA ratio with the various parameters of liver injury.

RESULTSHBsAg titre and HBsAg/HBV DNA ratio were significantly correlated (r =0.578, P less than 0.0001).A significant positive correlation (r =0.642, P less than 0.0001) was found between HBsAg titre and HBV DNA load, and a significant negative correlation was found between the HAI and HBsAg (r =-0.389, P less than 0.0001) and HBsAg/HBV DNA ratio (r =-0.307, P=0.000l).A significant positive correlation was found between alanine aminotransferase (ALT) level and the HAI (r =0.480, P less than 0.0001).Patients with G less than 2 necroinflammation had significantly higher HBsAg titre and HBsAg/HBV DNA ratio than patients with G more than or equal to 2 necroinflammation (both P less than 0.01) but similar levels ofHBV DNA.Generation of a receiver operating characteristic curve using G more than or equal to 2 as the positive index provided the following area under the curve (AUC) values:HBsAg titre, 0.700; HBsAg/HBV DNA ratio, 0.672; ALT level, 0.713.When the random chance AUC was 0.5, all levels of AUC were statistically significant (Pless than 0.001).HBsAg titre (sensitivity =76.92%) was more sensitive than ALT level (sensitivity =76.92%), and HBsAg/HBV DNA ratio (specificity =81.33%) was more specific than ALT level (specificity =81.33%).Youden's index for comprehensive evaluation using ALT was higher than those for HBsAg titre or HBsAg/HBV DNA ratio.When HBsAg and ALT were considered in parallel, the sensitivity increased to 94.08% and specificity rose to 85.60%.

CONCLUSIONHBsAg titre, HBsAg/HBV DNA ratio and ALT levels can be used as the index for judging the degree of liver inflammation in HBeAg-positive CHB patients.Higher sensitivity and specificity are attained when HBsAg and ALT are used in series or parallel.

Alanine Transaminase ; Area Under Curve ; Biomarkers ; DNA, Viral ; Hepatitis B e Antigens ; Hepatitis B virus ; Hepatitis B, Chronic ; Humans ; Inflammation ; ROC Curve ; Real-Time Polymerase Chain Reaction ; Serologic Tests