Objective To evaluate the effect of H. pylori eradication on the histologic changes in the gastric mucosa. Methods H. pylori-positive gastritis patients were divided into eradication group and control group. At the baseline and at the end of follow-up, all patients underwent endoscopy, biopsies for histological test. Result A total of 80 H. pylori-infected patients were divided randomily to eradication group ( n =40) and control group ( n =40). At 6 months, H. pylori eradicated in 29 patients was assigned to eradication group. In the control group, 27 patients remained H. pylori infected. Analysis of paired samples obtained from the same patients showed a significant decrease in acute and chronic gastritis ( P 0.05). In two groups, there were no significant changes in GA ( P =0.53 and 0.64).Conclusion H. pylori eradication can cure the acute and chronic inflammation and reduce, or even reverse the IM.

Objective To evaluate the clinical value of color M-mode Doppler echocardiography (CMM) in assessing left ventricular(LV) diastolic function after mitral valve replacement(MVR). Methods Fifty-two patients who had received the implantation for more than three months were examined by echoeardiography (MVR group). Thirty age and sex-adjusted normal volunteers served as control group. Dimensions of left atrium and ventricle,ejection fraction(EF) and mitral inflow velocity(E) were measured by two-dimensional and Doppler eehocardiography. Color M-mode Doppler flow propagation velocity(Vp) and TDl-derived diastolic mitral annular velocity(Em) were measured from the apical four-chamber and two-chamber views. Then two new indexes based on the ratio of E to Vp(E/Vp) and E to Era' (E/Em') were while E/Vp and E/Era' increased, there were significant differences(P <0.01). The correlation coefficient and atrial fibrillation(P <20.01) ,however E/Vp was lower affected hy EF or atrial fibrillation(P >0.05). dysfunction were 2.00. Conclusions CMM is an effective technique to assess LV diastolic function after MVR. E/Vp has good consistency with E/Era and may be a potential useful parameter for assessing LV diastolic function.

Objective To evaluate the clinical value of tissue Doppler imaging(TDI)in assessing left ventricular(LV)function after mitral valve replacement(MVR).Methods Forty-five patients having their implantations for more than three months were examined by echocardiography and divided into atrial fibrillation group(AF group,n=21)and sinus rhythm group(SR group,n=24).Thirty normal volunteers served as control group.Left atrium and ventricle indexs of cardiac function and mitral inflow velocity(E)were measured by two dimensional and Doppler echocardiography,and TDI-derived systolic mitral annular velocity(Sm),diastolic mitral annular velocity(Em)and isovolumic relaxation time(IVRT)were measured at the septal and lateral corners of mitral annulus from the apical four-chamber view.Then E/Em ratio was calculated.Results ①Compared with control group,Sm and Em in MVR group were significantly lower and IVRT was higher(P＜0.001),however there were no significant differences between AF group and SR group.② The E/Em ratio in MVR group was significantly higher than that in control group(P＜0.001)and positively correlated with IVRT.The best cutoff value for E/Em ratio was increased of 15 which yielded the sensitivity and specificity in predicting LV diastolic dysfunction were 91.11% and 90.32%,respectively.The area under the ROC curve was 0.9548±0.0402.Conclusions TDI-defived indexes(Sm,Em)can assess LV function accurately and the E/Em ratio,an estimate of myocardial relaxation and LV filling pressures,can be used to evaluate left ventricular diastolic function after MVR.

Objective To assess left ventricular systolic strain in patients with mitral valve replacement (MVR) by speckle tracking echocardiography. Methods Two-dimensional images were acquired from the apical four-chamber view, two-chamber view and long-axis of the left ventricular view in 30 MVR patients (MVR group) and 30 healthy subjects matched by age and gender(control group), and then were analysed off line to evaluate left ventricular systolic strain. The maximum systolic longitudinal strain(LS) of myocardial segments and global longitudinal strain(GLS) were measured in apical views. Left ventricular ejection fraction(LVEF) was calculated using Simpson's method. The correlation between GLS and LVEF was analyzed using Pearson's method. Results Compared with the control group, LS of corresponding segment and GLS in MVR group decreased significantly (P < 0.01), but there were no statistical differences within MVR group(P>0.05). There was a good linear positive correlation between GLS and LVEF in patients (r = 0.710, P <0.01). Conclusions Speckle tracking eehoeardiography is available for measuring left ventricular systolic strain and estimating global systolic function in patients with MVR. Bull's-eye strain map, created by speckle tracking imaging, can achieve an accurate real-time segmental wall motion analysis.

AIM:To explore a more accurate and reliable pathological model of the chronic bronchitis , which has improved from the former single-factor modeling method of the disease .METHODS:The mice in complex group were treated with lipopolysaccharide ( LPS) by tracheal injection on the 1st day and nasal drops on the 14th day, and from the 2nd day to 30th day, the animals were given passive smoking and sulfur dioxide ( SO2 ) inhalation ( except on the 14th day).The mice in SO2 group were exposed to SO2 2 min per day, while in smoking group, the mice were exposed to smoke for about 1 h per day (4 cigarettes each time until one pack of cigarettes were burning up ).In LPS group, the mice had tracheal injection of LPS on the 1st day and nasal drops of LPS on the 14th day and 30th day.Every modeling process las-ted for 30 days.After modeling, the improvement of chronic bronchitis model was evaluated by testing the general condi-tions of the mice , analyzing leukocyte count in bronchoalveolar lavage fluid ( BALF ) , and observing the morphological changes of the bronchial and lung tissues .RESULTS:After modeling, the mice in every model group experienced symp-toms including wet nose, cough, dry and lusterless hair, arched back and curled-up body, showing inactive, and slow down in response .The mice in complex group gained the lowest weight compared to other groups .From each model group , the inflammatory cells infiltrated evidently around the bronchial walls , especially in the bronchial cavity , and the mucilage secretion in the airway increased .The total number of leukocytes in BALF increased significantly in complex group .The in-flammatory cell count in the lung tissue indicated that the mice in complex group had significantly higher levels of inflamma -tory cell infiltration.Besides, the comparison between smoke group and LPS group was statistically significant .CONCLU-SION:Smoking, SO2 inhalation and LPS injection induce bronchial lung disease in mice , and the complex chronic bron-chitis mouse model is a better model with the pathological changes of bronchus , lung tissue and BALF , and pathogenesis of chronic bronchitis .

Objective:To identify the risk factors of heart failure in elderly patients with hip fracture by Meta-analysis.Methods:The clinical studies on perioperative heart failure in elderly patients with hip fracture were searched by computer in Pubmed, EMbase, Cochrane Library, Medline, Web of Science, CNKI, CBM, Wanfang and VIP database. The retrieval period was from the establishment of the databases to October 2021. The literature screening, data extraction and quality evaluation were completed by two researchers, and the selected literature were statistically analyzed by RevMan5.3 software.Results:A total of 17 articles were included in this study, involving 1 76 611 patients and 24 related risk factors. Cardiac history ( OR= 4.47, 95% CI 3.56-5.62), positive balance of perioperative inflow and outflow ( OR=5.99, 95% CI 3.30-10.87), anemia ( OR= 3.78, 95% CI 2.50-5.69), and the number of complications >4 ( OR=6.21, 95% CI 3.71-10.38), electrolyte disorder ( OR=7.40, 95% CI 3.77-14.54), preoperative cognitive impairment ( OR=3.60, 95% CI 1.39-9.31) and American Society of Anesthesiologists (ASA) grade ≥ 3 ( OR= 4.73, 95% CI 2.73-8.12) were statistically significant risk factors ( P<0.05). Conclusions:Cardiac history, positive balance of perioperative inflow and outflow, anemia, number of complications >4, electrolyte disorder, preoperative cognitive impairment and ASA grade ≥3 were the risk factors of perioperative heart failure in elderly patients with hip fracture.