Objective To evaluate the influence and mechanism of different cardiac pacing modes on TCM syndrome manifestations and hemodynamics of sick sinus syndrome(SSS).Methods The 75 SSS patients were detected syndrome manifestation scores and hemodynamic parameters before operations and 1 month after pacing to compare the differences among the different cardiac pacing modes.Results After operations,the syndrome manifestation scores were all decreased(P

Objective: To analyze and evaluate of the long-term follow-up data of 152 patients with inoperable malignant biliary obstruction who underwent percutaneous placement of metallic stents. Me-thods: From 2000 through 2006, 152 consecutive patients with malignant biliary obstruction were treated with PTCD or placement of metallic stents. The causes of obstruction were bile duct carcinoma (n=35),pancreatic carcinoma (n=32), hepatocellular carcinoma and metastatic (n=61), lymphadenopathy in the hepatoduodenal ligament (n=24). We used 86 stents: 31 Cook Zilver Stents,25 Sinus Superflex Stents,12 Wall Stents,3 Sinus-s Iliaca Stents,3 ZA-S Bliary Design Stents,5 Smart Stents and 7 other stents. Every three months we followed up all patients except those who died. Patient survival and stent patency rates were estimated by life-table analysis. The Kaplan-Meier method (log-rank test) was used to compare the patency and survival rates among different groups. And the COX regression model was established to compare the relative risks. Results: The overall median length of patency of all stents was 314 days. The median length of survival for the entire patient group was 215 days. The survival rate was 79.1%,51.7% and 26.8% after 3, 6, and 9 months, respectively. Six patients developed recurrent jaundice or cholangitis. The patients with hepatic hilar obstruction group indicated worse prognosis (P≤0.05). Conclusion: Metallic stents showed a favorable patency rate with regard to patient survival. In patients with hilar obstruction, the clinical prognosis was worse than that in patients with common bile duct (CBD) obstruction. We believe that the placement of metallic stents is the procedure of choice for palliation of malignant biliary obstruction.

DNA/genetics* ; Genotype ; Humans ; Infant ; Polymorphism, Single Nucleotide

Objective To evaluate the reliability and validity of extended reach lateral method by assessing the ability of lateral balance control in elderly people,and to provide a simple method to assess the ability of lateral balance control in order to provide a reasonable basis for fall prevention in elderly people.Methods 83 elderly people aged (77.3 ± 4.7) years were included in this study.Using lateral displacement of center of foot pressure as the criterion,the reliability and validity of extended reach lateral method was evaluated.Results Left and right sides of lateral reach were (14.7±0.4) cmand (14.9±0.3) cm.Left and right sides of center of foot pressure excursion were (8.5±1.9) cm and (8.5±1.5) cm.Lateral reach was significantly correlated with the center of foot pressure excursion (r=0.70,P＜0.001).Lateral reach had a high intraclass correlation coefficient (r=0.97,P＜0.05).Lateral reach was significantly correlated with age and height (r=-0.23 and 0.28,both P＜0.05),while it had no correlations with the foot length,foot pitch and handedness (all P＞0.05).Conclusions Lateral reach has a high reliability and validity to assess the ability of lateral balance control in elderly people,which is easy to be applicated and popularized.

Objective To analyze P wave dispersion (Pd) and QT dispersion (QTd) of the patients with cononary heart disease (CHD) before and after percutaneous coronary intervention (PCI) and to evaluate the influence of Tongguan capsule on improving myocardial ischemia in vivo cardiac electrophysiology. Methods 60 CHD patients treated by PCI were divided into the trial group (Tongguan Capsule 4 weeks+ conventional western medicine) and control group (conventional western medicine) randomly. Pd and QTd/QTcd of two groups before and after treamtment were measured. Results Pd and QTd/QTcd of the trial group were obviously declined. The difference between two groups was marked. Conclusion The treatment of Tongguan Capsule can improve Pd and QTd/QTcd of the patients with CHD, which suggest Tongguan Capsule can improve myocardial ischemia.

A type of data acquisition system of Laplacian ECG based on USB is introduced in this paper. The principle of hardware and method of software designing are explained. This system not only possesses very high CMRR, but also realizes the collection and transmission of Laplacian ECG signals in real time. This system is valuable in practice.

Objective To investigate the efficacy and safety of laparoscopic surgery of rectal cancer for different stages of rectal cancer . Methods A retrospective analysis was made on clinical data of 96 cases of rectal cancer from January 2009 to December 2013.Among 42 cases of TNM staged 0-Ⅰ, there were 22 cases of laparoscopic surgery ( laparoscopic group A ) and 20 cases of open surgery ( laparotomy group A ) .Among 54 cases of TNM staged Ⅱ-Ⅲ, there were 20 cases of laparoscopic surgery (laparoscopic group B) and 34 cases of open surgery (laparotomy B group).At the end of follow-up ended in May 2015, the tumor markers, postoperative complications , local recurrence , distant metastasis rate and 1-year and 3-year survival rates were compared in different stages of patients between the laparoscopic surgery and open surgery . Results As compared with the laparotomy group A , the laparoscopic group A had shorter surgery time [(121.7 ±13.5) min vs.(142.4 ±23.5) min, t=-3.530, P=0.000] and less blood loss [(80.9 ±10.6) ml vs.(136.3 ±32.6), t=-7.559, P=0.000].As compared with the laparotomy group B , the laparoscopic group B had less blood loss [(110.3 ±15.3) ml vs.(186.5 ±22.6) ml, t=-12.202, P=0.000].As compared with the laparotomy group A, the laparoscopic group A had significantly reduced distal resection margin distance [(2.3 ±0.6) cm vs. (3.0 ±0.7) cm, t=-3.489, P=0.001].As compared with the laparotomy group B, the number of lymph node metastasis was significantly reduced in the laparoscopic group B (2.7 ±0.4 vs.3.1 ±0.4, t =-3.298, P=0.002).The conversion rate to laparotomy in the laparoscopic group B was 20%.There were no significant difference between the laparoscopic group A and laparotomy group A in local recurrence rate [9.5% (2/21) vs.5.0% (1/20), χ2 =0.000, P=1.000], distant metastasis rate [4.8%(1/21) vs.5.0%(1/20),χ2 =0.000, P=1.000], and survival rate (log-rankχ2 =0.102, P=0.750).There were no significant difference between the laparoscopic group B and laparotomy group B in local recurrence rate [6.2%(1/16) vs.6.2%(2/32),χ2 = 0.000, P=1.000], distant metastasis rate [6.2%(1/16) vs.3.1%(1/32), Fisher test, P=1.000], and survival rate (log-rankχ2 =0.158, P=0.691). Conclusions Laparoscopic radical surgery for TNM stage 0-Ⅰ of rectal cancer has a good effect and safety.The conversion rate to laparotomy in TNM staged Ⅱ-Ⅲrectal cancer patients is still high with relatively high surgical risks , which requires strict preoperative assessment .

OBJECTIVETo explore the clinical effects of Dynesys system combined with posterior lumbar interbody fusion (PLIF) in treating multiple lumbar degenerative disease.

METHODSThe clinical data of 46 patients with multiple lumbar degenerative diseases treated by Dynesys system combined with PLIF from September 2010 to May 2013 were retrospectively analyzed. There were 17 males and 29 females, aged from 38 to 68 years old with an average of (56.38±11.63) years. Operation section was in L2-L5 of 16 patients (6 with fusion of L4,5 and 10 with fusion of L4,5,L5S1) and in L3-S1 of 30 patients (11 with fusion of L5S1 and 19 with fusion of L4,5,L5S1). Patients were followed up for three times: postoperative 3 months, 1 year and final follow-up. Visual analogue scale (VAS) and Oswestry Disability Index (ODI) were used to assess clinical symptoms preoperatively and postoperatively. All patients underwent flexion/extension radiographs examinations before surgery and at final follow-up. Range of motion (ROM) and disc height index (DHI) were recorded.

RESULTSAll patients were followed up from 16 to 48 months with the mean of (23.23±7.34) months. At third follow-up after operation, ODI and VAS of lumbago and leg pain were significant improved than that of preoperative (P<0.01). DHI of fusion segment was significantly increased than that of preoperative (P<0.05). There was no significant difference in adjacent non-fusion segment between preoperative and postoperative (P>0.05). Postoperative ROM of fusion and non-fusion segments were obviously decreased than that of preoperative. There was no significant difference in ROM of upper adjacent non-fusion segment between 3 months and 1 year after operation (P>0.05), but at final follow-up, the ROM was increased (P<0.05).

CONCLUSIONThe preliminary clinical results of the Dynesys system combined with PLIF in the treatment of multiple lumbar degenerative diseases are satisfactory. It can be determined in fusion or non-fusion according to the individual needs and can reserve the some intervertebral motion, prevent the early degeneration of adjacent segments. However, its long-term clinical efficacy should be verified with long time.

Humans ; Lumbar Vertebrae ; surgery ; Range of Motion, Articular ; Retrospective Studies ; Spinal Diseases ; physiopathology ; surgery ; Spinal Fusion ; methods ; Visual Analog Scale

A century ago the Flexner Report facilitated the process of modern medical education reform.Half a century ago,Problem-based learning initiated the student-centered medical education model.At present training medical students' competency will usher in the third reform in medical education.Over 100 years' development and in the global context of current medical education reform,China's medical education has become an important part of the world medical education.Harbin Medical University conducted an all-around reform through international cooperation and received the accreditation referenced according to global standards in medical education,which is an epitome of the medical education reform in China.

Objective:To study the correlation between responses to Hepatitis B and HLA DRB1*07 DRB1*04 DRB1*1001. DQB1*0401 genes in Han population in Ningbo.Methods:A total of 240 Han people living in Ningbo received the routine vaccination of recombinant hepatitis B vaccine.The serum levels of anti-HBs antibody were examined and the subjects were divided into 2 groups according to tile results:negative responses group(n=120.anti-HBs D