Objective The electrophysiological parameters of atrioventricular conduction function in patients with atrioventricular nodal reentry tachycardia (AVNRT)were analyzed,and to explore the effect of different ablation endpoints on atrioventricular conduction function in patients with AVNRT.Methods 96 cases with AVNRT under-went radiofrequency catheter ablation (RFCA)of slow conduction pathway.According to whether the slow pathway eliminated,the patients were divided into the slow pathway disappeared group and slow tracks remaining group.Preop-erative and postoperative intracavitary electrophysiological examination and atrioventricular function data were recor-ded,including before and after radiofrequency ablation of bundle of HIS,PA,AH,HV interval,atrioventricular prequel venturi point(AVN -WKB),ventriculoatrial retrograde venturi point(VAN -WKB),atrioventricular node prequel effective refractory period(AVB -WKB).Patients were followed up by telephone for a year.Then,a comparative anal-ysis of preoperative and postoperative was done.Results RFCA of AVNRT patients with atrioventricular node pre-quel time effect:RFCA and preoperative ratio,after his bundle electrogram PA,ah,HV interval had no significant changes(P >0.05).Effect of RFCA surgery on patients with AVNRT refractory atrioventricular node prequel:com-pared with RFCA before surgery,postoperative slow pathway disappear fast pathway shortening of effective refractory period[preoperative(287.5 ±46.2)ms,postoperative(260.2 ±55.6)ms,t =2.901,P =0.005],slow pathway effec-tive refractory period[disappear preoperative(243.3 ±43.2),postoperative(0.0 ±0.0)ms,t =43.290,P =0.000], AV node Wenckebach point in advance before operation[(261.3 ±44.3)ms,postoperative(293.2 ±46.2)ms,t =3.828,P =0.000];group after slow pathway to improve fast pathway effective refractory period without obvious change (P >0.05 ),the slow pathway effective refractory period in high concentration [preoperative (242.2 ± 42.8)ms,postoperative(281.2 ±41.3 )ms,t =3.879,P =0.000〗,atrioventricular node Wenckebach point in advance before operation[(261.5 ±43.5)ms,postoperative(291.3 ±46.5)ms,t =2.769,P =0.007〗.Comparison between groups,after slow pathway disappeared group fast pathway effective refractory period was significantly shorter in the slow diameter improvement group,but between the two groups in the atrioventricular node Wenckebach point differences was not statistically significant(P >0.05).There was no recurrence in the follow -up after a year of slow path loss and slow pathway.Conclusion RFCA caused by slow pathway to disappear or modified two slow pathway ablation right AVNRT patients atrioventricular time had no effect,but all the atrioventricular junction the prequel's point advance.The atrioventricular node slow pathway disappear fast and effective pathway refractory period short-ened,slow pathway improved the slow pathway effective refractory period.RFCA surgery done by the slow pathway dis-appeared or slow pathway ablation is effective in patients with AVNRT,and there was no significant recurrence rate in both groups within 1 year.

AIM: To observe the clinical effecacy of Aidi Injection (Radix Ginseng, Radix Astragali, Mylabris, Radix et Caulis Acanthopanacis Senticosi) combined with chemotherapy in the treatment of malignant advanced tumor. METHODS: Patientes (106 cases) with advanced malignant tumor were randomized into two groups: therapeutic group (56 cases) and control group (50 cases). The therapeutic group:the chemotherapy combined with Aidi Injection (60～80mL), once a day, for 10 days. The control group:the chemotherapy alone. Two groups mainly used PTX、DDP、EPI、5 FU、VP16 etc for chemotherapy. RESULTS: The therapeutic group has different degrees of improvement in life quality, short term efficacy, leukooytai drop and T cellular subfamily, etc. There was markedly difference between the therapeutic group and the control group ( P

Objective To study the effects of high concentration oxygen exposure on the Sox17 expression of vascular endothelial cells of neonatal mice lungs,and to explore the pathogenesis of blocked lung vascular development.Methods Thirty two C57B1/6J newborn mice within six hours after birth were randomly divided to hyperoxia group (n=16) and room air group (n=16).Mice of hyperoxia group were exposed to 85％ oxygen.Eight mice of either group were sacrificed at 7 and 14 days after birth respectively to observe the lung morphology and calculate radial alveolar counts (RAC),which is the number of alveoli on the straight line from the center of respiratory bronchioles to the nearest fibrous septa or the pleura.Sox 17 expression in the pulmonary vessels was detected by immunohistochemical staining.Sox17 mRNA was measured by reverse transcription polymerase chain reaction.Sox17 protein level was measured by Western blot.Two independent samples t-test was used for statistical analysis.Results Compared with day 7,the lung structures matured with more uniformed alveoli and the septas became thinner on day t4 in room air group.However,the lungs developed slowly with simplified and non-uniformed alveoli on day 14 in hyperoxia group.The Sox17 protein was positive on endothelial cells of pulmonary arteries,veins and alveolar capillarys,as well as the alveolar epithelial cells.The RAC on day 7 and day 14 in hyperoxia group were both lower than that in room air group (3.7±0.7 vs 5.0±0.8,5.3±0.6 vs 8.3±0.9,respectively,t=3.057 and 8.148,both P ＜ 0.01).Sox17 mRNA on day 7 and day 14 in hyperoxia group were both lower than that in room air group (0.62±0.10 vs 0.88±0.11,0.44±0.06vs 0.90±0.15,t=3.607 and 6.926,both P ＜ 0.01).Sox17 protein level on day 7 and day 14 in hyperoxia group were both lowered than that in room air group (0.32±0.04 vs 0.76±0.04,0.36±0.07 vs 0.96±0.06,t=3.102 and 8.421,both P ＜ 0.01).Conclusions Exposure of high concentration of oxygen may cause impairment of lung vascular development by inhibiting Sox17 expression in lungs of neonatal mice.

BACKGROUND: Color Doppler flow imaging can exam the early myocardial disorder in type 2 diabetic patients. What does exercise tolerance test work for the examination of such disorder in combination with color Doppler flow imaging (CDFI) ?OBJECTIVE: To analyze in comparison the early evaluation on reduced diastolic function in left ventricle in patients with type 2 diabetes between the examinations of exercise tolerance test combined with color Doppler flow image and simple color Doppler flow imaging.DESIGN: Cases-controlled comparison and self-comparison.SETTING: Department of electrodiagnosis and department of Endocrinology in a municipal hospital.PARTICIPANTS: Thirty-six cases of inpatients with type 2 diabetes were selected from Department of Endocrinology of Shenyang Red Cross Hospital from March to December in 2004, of which, 25 cases were males and 11cases females. The diabetic patients included had no cardiac vascular complications and participated in the study in volunteer. Thirty-two patients who received annual routine health check at the same period were selected as the control, of which, 20 cases were males and 12 cases females.METHODS: Metronics treadmill exercise test equipment was used for exercise tolerance in two groups. Before exercise(at quiescent state) and after exercise tolerance, Vivid 4 CDFI was used to determine flow velocity at E and A peak values respectively, ratio between flow velocities at E peak value and A peak value as well as isovolumtric relaxation time (IRT).MAIN OUTCOME MEASURES: Comparison of cardiac functional indexes before and after exercise tolerance in two groups.RESULTS: Thirty-four diabetic patients accomplished exercise tolerance test, of which, 1 case presented frequent ventricular extrasystole, another one presented precordial pain and stopped the test. In the control, all of 32 cases ratio between flow rates of E peak value and A peak value was remarkably lower than that in the control (0. 90 ± 0. 25, 1.40 ± 0.30, P ＜ 0.05 ); IRT was remarkably longer than that in the control [ (112. 07 ± 20. 16),imental group, the ratio between flow rates of E peak value and A peak value was remarkably lower than that in the control (0.62 ±0. 12, 1.28 ±0.87, P＜ 0.01 ); IRT was remarkably longer than that in the control[ (138. 10± 19.21), (97.37±9.61) ms, P ＜0.01].CONCLUSION: CDFI can supervise and evaluate at early stage the cardiac functional changes in type 2 diabetic patients. Due to the induction of exercise tolerance, the combination of exercise tolerance test and CDFI provides more accurate, objective and valuable conclusions at early stage.

Objective To investigate the clinical characteristics of acute inhalational metallic nickel poisoning and its treatment effect.Methods Data including epidemiology,clinical features,laboratory tests,imaging examinations,therapy protocol as well as prognosis were collected and analyzed.Results Thoracic CT scan of all patients demonstrated as bilateral diffuse infiltration.Nickel concentration in both blood and urine were high in all patients and the concentration was positively associated with poisoning severity.All 4 patients received glucocorticoid treatment,2 of whom with acute respiratory distress syndrome were admitted to ICU to initiate mechanical ventilation and were given sodium dimercaptopropanesulfonate.All patients survived to hospital discharge.Conclusions Acute inhalational metallic nickel poisoning is uncommon and early symptoms are inconclusive.The blood and urine nickel concentration is helpful to judge the severity of the disease.Pulmonary diffuse infiltration is the main clinical feature.Glucocorticoid,chelation therapy as well as symptomatic treatment are effective therapies to relief disease severity.

Pure culture of Phlebopus portentosus was inoculated in the roots of coffee tree. The results indi-cated that the young fruit bodies would come out around the rhizomes of host tree after inoculation in 30 to 90 days, single or cluster, 3 to 4 days for mature, weight 20.0 g to 62.0 g. Brown rhizomorph and hyphae can be seen on the seedlings`rhizome, main root and side root while nothing is on the tip of the root.It was found that rhizomorph on the surface of roots would die after inoculation in 90 days in pot.

Objective To investigate the predictive factors of progressive motor deficits (PMD) after isolated pontine infarction. Methods Consecutive patients with isolated pontine infarction admitted to hospital within 48 hours after onset were enroled. They were divided into either a PMD group (increase ≥1 within 7 days) or a non-PMD group according to the clinical course and the changes of motor scores of the National Institutes of Health Stroke Scale (NIHSS). The pontine infarction patterns were classified as basal surface infarction and deep infarction, the sides were divided into left and right, the infarct levels were divided into upper, middle, and lower according to diffusion-weighted imaging. The demographics, baseline clinical data, and imaging features were compared between the two groups. Multivariable logistic regression models were used to analyze the predictive factors of PMD after isolated pontine infarction. Results A total of 101 patients with isolated pontine infarction admitted to hospital within 48 h of onset were enroled, including 16 in the PMD group and 85 in the non-PMD group. The proportions of pontine infarction involving the basal surface (87. 5% vs. 47. 1% , χ2 = 8. 851, P = 0. 003), the infarcts on the middle levels (56. 2% vs. 24. 7% , χ2 = 4. 851, P = 0. 028), and basilar artery stenosis or occlusion (62. 5% vs. 27. 1% ,χ2 = 7. 689, P = 0. 006) of the PMD group were significantly higher than those of the non-PMD group, while the proportions of the infarcts on the left sides (18. 8% vs. 56. 5% , χ2 = 7. 664, P = 0. 006) and the infarcts on the upper levels (37. 5% vs. 72. 9% , χ2 = 7. 689, P = 0. 006) of the PMD group was significantly lower than those of the non-PMD group. Multivariate logistic regression analysis identified that pontine infarction involving the basal surface (odds ratio 5. 650, 95% confidence interval 1. 011 - 31. 580, P = 0. 049) and basilar artery stenosis or occlusion (odds ratio 4. 075, 95% confidence interval 1. 127 - 14. 741, P = 0. 032) were the independent risk factors for PMD after isolated pontine infarction. Conclusions Infarction involving the basal surface and basilar artery stenosis or occlusion may be the predictors for PMD after isolated pontine infarction.

Objective To investigate the effect of femoral head replacement for the treatment of intertrochanteric frac -tures among elderly patients .Method There were 38 cases that received intertrochanteric fracture hemiarthroplasty and 35 patients were treated with open reduction and dynamic hip screw ( DHS) plate internal fixation .After follow-up, their opera-tion duration,blood loss, postoperative drainage flow , postoperative ambulation time , hospitalization time were compared according to the Harris score to assess the effect of postoperative follow-up.Results After the mean follow-up time of 18 months (12 to 36 months),the hemiarthroplasty group was superior to the open reduction and DHS plate fixation group ,as shown by the earlier postoperative ambulation time , fewer complications , and better fracture reduction , with an excellent rate of 94 .7%.Conclusion For patients with intertrochanteric fractures , hemiarthroplasty surgery is effective and can re-duce the incidence of postoperative complications .

Objective:To explore the suitable management model on diabetic patients in communities and improvethe effect of treatment.Methods:All subjects were randomly divided into two groups,118 in control and 102 in treatment.Thecontrol group was treated with western medicine,and the treatment group was treated with western medicine and Chinese herb asdrinking.The following items were observed:the variation of human body basic parameter,blood glucose,scores of symptoms inTCM and quality of life.Results:Blood pressure and blood glucose descended in the treatment group after intervention (P

Objective To make a preliminary investigation and summary of the technique and efficacy of the novel intracranial stent, Enterprise, together with hydro-detachable coils for the treatment of very small intracranial wide-necked aneurysms (diameter<3 nun and body-to-neck ratio<1.5). Methods Six cases with very small intracranial wide-necked aneurysms were treated with Enterprise stents and hydro-detachable coils. In 5 cases the Enterprise stent was implanted to cover the neck of the aneurysm, which was followed by the introduction of a microcatheter into the aneurysmal sac through the stent mesh to stuff hydro-detachable coils in order to fill the aneurysmal sac. In the remaining case, the microcatheter was placed into the aneurysmal sac before the Enterprise stent was inserted to embolize the aneurysm. Postoperative follow-up was conducted for 3-6 months. Results The operation was successfully completed in all 6 patients, with the implanted stents being in right place. The parent arteries remained patency in all patients. No complications occurred. Complete occlusion of aneurysmal cavity was obtained in four cases, and the occlusion degree of the aneurysmal cavity above 95% was seen in 2 cases. After the procedure, all the patients recovered well. Neither rebleeding nor symptoms related to thrombosis occurred during a clinic follow-up of 3-6 months. Conclusion Endovasculur embolization with Enterprise stent together with hydro-detachable coils is a safe and effective method for the treatment of very small intracranial wide-necked aneurysms. However, its long-term effect needs to be further observed.