Objective To investigate the relationship between ultrasonographic features of papillary thy-roid carcinoma(PTC)and lateral cervical lymph node metastasis (LCLNM).Methods A total of 449 eligible ca-ses with 633 PTC nodules was selected and divided into two groups:LCLNM group included 135 nodules(91 pa-tients);Without metastatic groups included 498 nodules(135 patients).Ultrasonographic features of PTC nodules and the relationship with LCLNM were analyzed by χ2 test and logistic regression analysis .Results In univariate analysis,the significant factors were male,age<45yrs,multifocal,maximal diameter(d>1 cm),multi-microcal-cificaltion(d<2 mm),mixed flow,wider than tall,CCLNM,extrathyroid extension,located in upper(P<0.05 or P<0.017).Multivariate analysis showed that multi -microcalcificaltion(d<2 mm),wider than tall,CCLNM,ex-trathyroid extension,located in upper pole were predictive factors of LCLNM (P<0.005,OR=1.626,2.644, 0.479,2.579).Conclusion High-frequency ultrasound can accurately describe the sonographic appearance of thyroid nodules;it can be used to remind the risk of LCLNM before operation ,and will be informative for the treat-ment of surgery .

OBJECTIVE To analyze the correlation factors of nosocomial infection in patients after receiving craniocerebral operation.METHODS Totally 388 hospitalized patients after receiving craniocerebral operation from Jan 2006 to Dec 2006 were studied retrospectively.RESULTS From them 45 pateints were suffering from nosocomial infection and total incidence of nosocomial infection was 11.59%.Among them,60.0% was lower respiratory tract infection,11.11% was surgical wound infection and 8.89% was upper respiratory infection.Aging,length of stay and invasive operation(deep vein needle detaining,trachea incision,tracheal intubation,urinary canal and drainage tube dwelling) were the main correlation tactors.CONCLUSIONS Minimizing invasive operation and early removing various kinds of dwelling tubes,using antibiotics correctly,improving hospitalizd environment and strengthening wards management are the measures to reduce nosocomial infection according its correlation factors.

Objective To study the effect of relaxation therapy on sleeping quality of patients with post cran- iocerebral traumatic syndrome. Methods 90 cases with sleep disorders were randomly divided into the treatment group and the control group. The control group was given routine care and the treatment group was given relaxation therapy combined with routine care. Take pittsburgh sleep quality index (PSQI) as evaluation criteria. Results There was significant difference between the two groups( P < 0.01 ). Sleep quality was more improved by relaxation therapy in the experimental group than that of the control group. Conclusion Relaxation therapy can effectively im- prove sleep quality in patients with post craniocerebral traumatic syndrome.

Objective To investigate the influence of early rehabilitation on the recovery of patients who have undergone the low rectal cancer resection. Methods 130 patients with low rectal cancer resection were divided into the rehabilitation group and the control group randomly, there were 65 cases in each group. The control group were accepted the routine nursing care, and the rehabilitation group were accepted the early recovery intervention. Compared the time of anus exhaust, the time of stomach extubation, the incidence rate of postoperative complication, the time of bed rest and the quality of postoperative life in these two groups. Results All the indexes which have compared between these two groups were significant better in the rehabilitation group than those of in the control group, P

rative.

Objective To compare the mid-term results of video-assisted pulmonary veins isolation and box-lesion for lone atrial fibrillation.Methods Between June 2010 to November 2012,80 lone atrial fibrillation(LAF) patients underwent minimally invasive surgical ablation in Beijing Anzhen Hospital,and all of them received left atrial appendage excision and Marshall ligament break in the surgery.Among them,37 cases were performed two epicardial ablation lines in order to created box-lesion based on PVI(14 paroxysmal AF and 23 persistent AF).Follow-up was finished after discharge.Results Mean follow-up was(18.8 ± 7.4) months,and 2 patients were died with non-cardiac disease.The success rate is 78.8％ (Paroxysmal AF 87.9％;Persistent AF 72.3％).In the paroxysmal AF patients,the success rate for PVI and Box lesion treatment was 84.6％ (11/13) and 92.9％ (13/14),P =0.45;in the persistent AF patients,the success rate for PVI and Box-lesion was 58.3％ (14/24) and 87.5％ (14/16),P =0.04.Conclusion Addition of epicedial ablation lines might increase the cure rate for lone AF therapy,especially for persistent AF.

Objective To conclude the preliminary results of aortic valve repair with autopericardium.Methods After routine median sternotomy the pericardium was isolated and immersed into the 0.6% glutaraldehyde immersion for 10 minutes, then rinsed off before use.Conventional extracorporeal circulation was established and diseased aortic valves were removed.The curves lengths between three commissures measured with the specific sizers.The corresponding size of the pericardial patchs was used to cut the new aortic leaflets.The continuous Johnson Prolene 4-0 sutures were used to fixed the new aortic valve leaflets to the anulus.Another new 4-0 prolene suture were used to fix the new three commissures outside the aortic wall with mat.The new mat stripes were used to fix the sinus in condition with the aortic sinus dilation or bileaflets malformation.Results Since 2015 October total 27 patients received aortic valve repair with autologous pericardium.The age was in the range of 27 to 60 years old including 18 female and 9 male.There were 7 cases diagnosed as aortic valve stenosis and 20 cases aortic insufficiency.And there were 3 cases bileaflets aortic valve deformity.The mean bypass time is(104±25)mins.Postoperative esophageal ultrasound showed good coaptation of the aortic valve without significant regurgitation.The mean transvalve gradient was(8.5±3.2)mmHg(1 mmHg=0.133 kPa).In the early stage one case diagnosed with aortic valve stenosis and regurgitation received monocusp repaired with autologous pericardial leave.But there was still moderate aortic regurgitation and had to receive the aortic valve replacement.All patients recovered well and were treated with Aspirin for 6 months.The followed up lasted for 3 to 13 months.Mean aortic occlusion time was(104±25) minutes.The patients were followed up for 3-13 months, the cardiac function and aortic valve function were stable, and no gradient increased.Conclusion It is relatively simple to perform the aortic valve repair with individual autologous pericardial sizer technique and the primary clinic results are satisfactory.It is worthy of further study and long-term follow-up.

Objective To evaluate the effects of preoperative prophylactic infusion of cephalosporins antibiotics on electrocardiogram(ECG)during anesthesia induction with propofol. Methods Fifty female patients,of American Society of Anesthesiologists physical status Ⅰ or Ⅱ,aged 20-50 yr,weighing 43-75kg,scheduled for elective surgery,were divided into cefuroxime sodium group(group CEFU)and cefathiamidine group(group CEFA),with 25 patients in each group. After cefuroxime sodium was infused in group CEFU or cefathiamidine was infused in group CEFA,propofol was given by target-controlled infusion(plasma concentration 4 μg/ml).Before infusion of cefuroxime sodium or cefathiamidine,after completion of infusion and at 5min after propofol reached the target concentration,12-lead ECG was recorded,and mean arterial pressure and heart rate were simultaneously recorded. Tp-e interval and Tp-e/QT ratio were calculated.Results Compared with the baseline before infusion of cefuroxime sodium or cefathiamidine,Tp-e interval was significantly prolonged after completion of infusion and at 5min after propofol reached the target concentration in group CEFU,and Tp-e interval was significantly prolonged,and Tp-e/QT ratio was enlarged in group CEFA(P<0.05).There was no significant difference between the two groups in mean arterial pressure and heart rate at each time point (P>0.05).Conclusion Preoperative prophylactic infusion of cefuroxime sodium produces less ECG interference than preoperative prophylactic infusion of cefathiamidine during anesthesia induction with propofol.

Objective To investigate the effects of target-controlled confusion of propofol with different concentrations on ventricular repolarization after prophylactic infusion of cefuroxime sodium. Methods Sixty ASA physical status Ⅰ or Ⅱ female patients,aged 18-65 years,undergoing elective gynecological surgery were randomly divided into three groups:group P2 (n =20)with TCI 2 μg/ml, group P3 (n =1 9)with TCI 3 μg/ml and group P4 (n =20)with TCI 4 μg/ml.Firstly,they were re-hydrated;secondly,the patients in groups P2,P3 and P4 were intravenous infused with cefuroxime sodium 2.5 g (in 100 ml normal saline)and then target-controlled infused of propofol 2 μg/ml,3μg/ml and 4 μg/ml in target plasma concentration,respectively.At three pionts of time:after rehy-dration before intravenous antibiotics (T0 ),after intravenous antibiotics before TCI of propofol (T1 ), after TCI of propofol (T2 ),QT interval,QTc interval,Tp-e interval were measured and recorded, respectively.Results Compared with T0 ,QTc [(469.9 ± 34.0)ms vs.(451.2 ± 24.9)ms],Tp-e [(107±25)ms vs.(94±20)ms]and Tp-e/QT (0.260±0.058 vs.0.236±0.043)in group P4 were sig-nificantly prolonged at T1 (P < 0.05 ).Compared with T1 ,QTc of groups P2 [(437.4 ± 24.4)ms vs. (453.3±28.0)ms]and P4 [(438.8±29.9)ms vs.(469.9±34.0)ms]were shortened significantly at T2 (P <0.05).Conclusion Propofol could improve ventricular reporlarization heterogeneity caused by cefu-roxime sodium.

In order to solve the problem of selection and in vivo delivery problem in siRNA treatment, hepatitis B virus (HBV) HBx gene which could be targeted by siRNA was studied. The siRNA expression plasmid which specific inhibits HBx expression was obtained by in vitro selection via a dual-luciferase plasmid including HBx-Fluc fusion protein expression domain. The selected siRNA expression plasmid was then encapsulated in PEG-modified cationic liposome, which was devoted into pharmacodynamic studies at both cellular and animal level. The results illustrated that the cationic liposome which encapsulated siRNA expression plasmid could effectively inhibit HBx gene expression both in vitro and in vivo.