There was significant difference in teaching atmosphere between teaching hospitals directly and indirectly under medical university.To improve medical students'general quality,some measures were carried out in our teaching hospital indirectly under medical university,such as strengthening the exchanging with teaching hospital directly under medical university,improving the teaching management system,strengthening the key teaching members training and teaching quality control,and improving student performent training.

Objective To analyze the X ray findings of enema unreduced (including 4 perforations ) intussusception so as to improve the knowledge about the difficulty of reduction by air enema or the risk of perforation. Methods Of the 552 cases, 506 cases were successfully reduced by air enema. The range of air pressure was 6.67 to 14.67 kPa(60～110 mm Hg). Forty six unreduced cases were cured by operation. The films were taken before and during the reduction period. X ray findings were analyzed compared with that of the operative pathology. Results (1)Abdominal plain films showed total obstruction in 26 cases and asctis in 4 cases; (2) Air enema showed big and lobular masses in 36 cases and the location of masses in distal part of colon in 22 cases; (3)Operation pathology: ileoilecolic intussusception in 35 cases, 15 cases with intestinal necrosis (including 4 perforation cases). In 3 cases, perforations were in the intussusceptum,the other in the intussuscipiens. Conclusion 92% of intussusceptions can be reducted by pressure of air enema. Complex intussusception, with intestinal necrosis and primary intussusceptum, are difficult to reduce, and these patients ought to be operated on time.

A red pigmant, procligiosin, have been isolated from the metabolite of germ pseudomonas sp. collected from the Dayawan Bay. Its structure was established on the basis of the spectral method.

Objective:To investigate the correlation between ankle-brachial index(ABI)and intracranial atherosclerosis in patients with ischemic stroke.MetlaTds:qhe ABI of 73 patients with ischemic stroke were detected using vascular Doppler ultrasound;head magnetic resonance angiography(MkA)was performed using a 1.5 T magnetic resonance imahing system,and the extent of intracranial artery stenosis was graded.The correlation between ABI and the grade of intracranial artery stenosis in patieras with ischemic stroke was analyzed.Results:The ABI in patients without intracranial artery stenosis(n=38)was significantly higher than those with intracranial artery stenosis(n=35)(0.975±0.114 vs 0.837±0.096,P<0.001).The ABI was significantly negatively correlated with the extent of intracranial artery stenosis(r=-0.736,P=0.001).Conclusions:The ABI was negatively correlated with the extent of intracranial artery stcnosis.It can he used as a preliminary screening means of intracranial atherosclerosis.

Objective To compare the differences of atria and atrial myocyte structure in patients with atrial fibrillation (AF) and sinus rhythm(SR) .To evaluate the influence of AF on cardiac function .Methods 79 patients without heart failure undergoing car-diopulmonary bypass surgery were divided into the AF group (n=39) and the SR group(n=40) .Echocardiography was performed for analysis of left ventricular end diastolic dimension(LVDd) ,left ventricular end-systolic dimension(LVDs) ,left ventricular poste-rior wall(LVPW) ,interventricular septum(IVS) and left atrial diameter(LAD) .Part of left atrial appendages was taken freshly for HE staining in order to observe atrial tissue structure .Results LVDd ,LVDs ,LVPW and IVS of the AF group were lower than that of the SR group .But LAD of the AF group was higher than the SR group .There was statistical significance in IVS and LAD between the two groups(P<0 .05) ,and there were no significant differences in other aspects (P>0 .05) .Compared with the SR group ,the AF group had thinner myocardial atrophy ,more obvious fibrosis ,smaller nucleus and darker HE staining .Conclusion The incidence of AF was mainly in rheumatic heart disease .The development of AF was mostly accompanied with the enlargement of LAD and the change of atrial tissue structure which showed that AF can reduce cardiac function .

Objective To investigate the clinical efficacy of new-type patent endotracheal tube in difficult endotrachea intubation patients.Methods Seventy-three patients with the abnormal airways were selected as our subjects.Patients were given the traditional endotracheal tube by mouth after anesthesia.The successes patients in terms of endotracheal intubation were as group Ⅰ (n =73).The failed patients were asgroup Ⅱ (n =63),who performed the secondary endotracheal intubation with new type patent endotracheal tube.Analyze the success rate of intubation of the two groups when on use the tube core.Results The first time intubation success rate and intubation success rate was (2.7％ (2/73),13.7％ (10/73) respectively) in Ⅰ group,and 73.02％ (46/63) and 98.41％ (62/63) respectively in the group Ⅱ,and there was the significant difference between two groups (x2 =36.01,31.08 respectively,P ＜ 0.01).Conclusion The new type endotracheal tube was proved with three advamage of good plasticity,without need of auxiliary core intubation with trachealtube and give full play to lead the soft cannula guide tubes leading role.Therefore,the new type patent endotracheal tube has more efficacy over traditional tube.

5 0 cm, intratumoral necrosis, liquefaction, cystic degeneration, lymph nodes metastases, invasion of renal vein or inferior vena cava, invasion of adjacent organs or distant metastases had higher DNA content Those tumors had higher malignant biological behavior

Objective To study the value of chest radiograph and thin-section computed tomography (CT) in diagnosis bronchiolitis obliterans in children, and to determine clinical view of obliterative bronchilitis in children. Methods We identified 12 infants, 10 boys, and 2 girls (age range, 5 month to 11 years) with clinical confirmation of bronchiolitis obliterans. Three cases were after Steven-Johnson syndrome, 8 were post-infection(2 adenovirus, 2 measles and 1 Pseudomonas aeruginosa infection, 3 cases were unknown etiology infection) ; The symptoms lasted for at least 6 weeks. One case had lung ventilation nuclear scan. We evaluated individual bronchscopy, pulmonary function test, chest radiograph and thin-section CT features and their characteristic appearance. Results All cases had typical clinical characteristics and pulmonary function testing results that were consistent with nonreversible small airways obstruction. One case had lung ventilation nuclear scan illustrated absent and reduced ventilation of the right lower lobe. Nine cases who underwent bronchoscopy were chronic endobronchial inflammation. Three children had transbronchial biopsy and 1 patient who underwent open pulmonary biopsies were uncertain of histological diagnosis. Chest radiography showed hyperinflation in 8 cases; peribronchial thickening in 6 cases; consolidation/atelectasia in 6 cases; unilateral hyperlucency of a small/normal-sized lung in 4 cases. Thin-section CT/HRCT features included: mosaic perfusion pattern, decreased lung attenuation in 11 cases, pulmonary vascular attenuation in 10 cases; bronchial dilatation in 7 cases; bronchial wall thickening in 9 cases; unilateral hyperlucency of a small/normal-sized lung in 5 cases; consolidation in 6 cases; nodular in 3 cases; mucoid impaction in 5 cases. Conclusions In our study, correct diagnoses of bronchiolitis obliterans in children were made more special with thin-section CT than with chest radiographs. The diagnosis of BO in children can be based on the characteristic clinical situation, pulmonary function, indicating minimally reversible airways obstruction and characteristic thin-section CT findings.

Objective To investigate the effects of the exercise training on the cognitive function ,choline acetyltransferase (ChAT) activity and acetylcholinesterase (AchE) activity in stroke prone spontaneously hypertensive rat (SHR/SP) vascular de-mentia model .Methods 30 male SHR/SP rats were randomly divided into sham operation group ,model group and exercise group (n=10) .The VD model was established by the fractional ligation of bilateral carotid artery (2-VO) .The sham operation group and the model group were given the normal feeding without intervention after operation ;the exercise group adopted the treadmill exer-cise(DSPT-1) for 8 weeks .After the exercise ,the Morris maze test was conducted for evaluating the cognitive function in each group .The rats were finally killed for detecting the ChAT activity and AchE activity of hippocampus .Results In the positioning navigation training ,the latency period of the sham operation group was significantly short than that of the exercise group and the model group ,but the latency period of the exercise group was obviously short than that of rats in the model group (P<0 .05);in the spatial exploration test ,the rats in the sham operation group had more frequency of crossing platform than the other two groups ,the exercise group had more frequency of crossing platform in platform quadrant than the model group (P<0 .05);the exercise training could increase the ChAT activity and lower the AchE activity of hippocampus .Conclusion The exercise training can improve the function of hippocampal cholinergic system in SHR/SP and then increase the cognitive ability .

Objective To evaluate the role of multi-slice computed tomography (MSCT) in the diagnosis of pulmonary sequestration.Methods MSCT scans of 18 cases of pulmonary sequestration proved by surgery and pathology were reviewed.All cases underwent plain and contrast enhanced CT scanning,and retrospective reconstruction was made.Various reconstruction techniques in displaying the pulmonary sequestration and associated malformation were evaluated.Results Anomalous systemic arterial supply was discovered by transverse CT images in 12 cases.The reconstructed images using multiple methods showed the aberrant artery more clearly in all cases,including 6 cases in which the abnormalities were not confirmed by transverse CT.Drainage vein was revealed in 13 cases and lung heteroplasia with other malformation was demonstrated in 14 cases.Volume rendering (VR) reconstruction is the optimal choice for displaying the abnormal vessels and airway.Conclusion Enhanced MSCT with image post-processing can show the abnormal artery and vein of the pulmonary sequestration and the associated malformation,so it is the first choice in diagnosing pulmonary sequestration in pediatric population.