Safety management of clinical medical imaging equipment / 医疗卫生装备

Objective To execute safety management of clinical medical imaging equipment to enhance medical service quality.Methods The classification and main products of medical imaging equipment were introduced.The common failures were analyzed,and the main causes involved in equipment,personnel and environment.The safety management of medical imaging equipment was implemented from the aspects of assets management,quality control management and measurement management.Results The safety management decreased the failure rate,prolonged the service life,reduced the cost,provided data for clinical service and shortened the treatment time.Conclusion The medical equipment management department performs safety management from the aspects of assets management,quality control management and measurement management,so that the efficiency of medical imaging equipment can be ensured.

Treatment of benign ureteral stricture by double J stents using high-pressure balloon angioplasty / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Balloon dilatation angioplasty is a minimally invasive surgery for treating benign ureteral stricture. The aim of this study was to investigate the effect of placing double J (D-J) stents using high-pressure balloon angioplasty in treating benign ureteral stricture.</p><p><b>METHODS</b>A total of 42 patients (48 cases) with benign ureteral stricture (42 had benign ureteral stricture) were investigated by inserting dual D-J stents using high-pressure balloon angioplasty. The control group contained 50 patients (57 cases) employing the conventional balloon angioplasty with a single D-J stent inserted for comparison.</p><p><b>RESULTS</b>The overall effective rate of the treated and control groups was 87.8% (36/41) and 62.7% (32/51), respectively (P < 0.05).</p><p><b>CONCLUSION</b>This new approach produces a better curative effect than the conventional balloon angioplasty with a single D-J stent insertion in treating benign ureteral stricture.</p>

Placement of dual double-J stents following high-pressure balloon angioplasty for treatment of ureter-ileum bladder anastomosis stricture / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the benefit of placement of dual double-J stents following high-pressure balloon angioplasty for treatment of ureter-ileum anastomosis stricture after total bladder resection.</p><p><b>METHODS</b>Seventeen patients (11 males and 6 females, mean age 56.65±6.28 years, 23 sides) undergoing total bladder resection were included in this study. Unilateral and bilateral ureteral stricture occurred postoperatively in 11 and 6 patients, respectively; 13 patients had ureter-ileum bladder anastomosis stricture after ileal bladder substitution, and 4 patients had ureter-ileum stricture after orthotopic construction of ileal neobladder. The control group consisted of 21 patients undergoing open surgery.</p><p><b>RESULTS</b>In the double-J stenting group, the effective rate was 82.6% (19/23), similar to that of 85.7% (18/21) in the control group (P>0.05). Compared with the control group, the stenting group showed a significantly reduced mean time of operation (87.42±10.35 min vs 34.12±7.52 min, P<0.05), intraoperative blood loss (203.16±32.67 ml vs 21.54±6.15 ml, P<0.05), and mean postoperative hospital stay (10.12±1.19 vs 3.24±0.35 days, P<0.05).</p><p><b>CONCLUSION</b>As a safe and minimally invasive approach to the management of ureter-ileum bladder anastomosis stricture, placement of dual double-J stents following high-pressure balloon angioplasty produces a effect comparable with that of open surgery.</p>

Hemodynamic changes in depressive patients / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

<p><b>OBJECTIVE</b>This study is aimed at exploring the relationship between hemodynamic changes and depressive and anxious symptom in depression patients.</p><p><b>METHODS</b>The cardiac function indices including the left stroke index (LSI), ejection fraction (EF), heart rate (HR), diastolic pressure mean (DPM), systolic pressure mean (SPM), left ventricle end-diastolic volume (LVDV), effective circulating volume (ECV), resistance total mean (RTM) and blood flow smooth degree (BFSD) were determined in 65 patients with major depressive disorders and 31 healthy normal controls. The clinical symptoms were assessed with Hamilton depression scale (HAMD) and Hamilton anxiety scale (HAMA).</p><p><b>RESULTS</b>In patients with depression without anxiety, LSI, EF, LVDV, DPM, SPM, ECV, BFSD were significantly lower than those in controls, while RTM was higher than that in controls. Patients with comorbidity of depression and anxiety showed decreased LVDV, ECV, BFSD, and increased HR in comparison with the controls. The anxiety/somatization factor score positively correlated with LSI, EF, LVDV, but negatively correlated with RTM. There was negative correlation between retardation factor score and DPM, SPM, LVDV.</p><p><b>CONCLUSION</b>The study indicated that there are noticeable changes in left ventricle preload and afterload, blood pressure, peripheral resistance, and microcirculation in depressive patients, and that the accompanying anxiety makes the changes more complicated.</p>

Bladder Regeneration by Small Intestinal Submucosa with Release of Exogenous Growth Factors / 中国康复理论与实践

@#ObjectiveTo explore the release of exogenous growth factors from small intestinal submucosa (SIS) in bladder regeneration. MethodsThe release of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) from SIS in vitro were evaluated by ELISA and MTT method. The defected bladder walls of rats in experimental group were repaired with porcine small intestinal submuscosa. Partial bladder mucosa and smooth muscle of the rats in control groups were destroyed. At regular intervals, the VEGF and bFGF expression were observed by histological and immunohistochemical methods. ResultsThe concentration of bFGF and VEGF released in vitro from SIS in PBS solution were (121.8±2.683) ng/L and (93.8±3.033) ng/L respectively, and showed proliferation of vascular endothelial cell. In the SIS framework, the capillary and smooth muscle were observed followed histological evaluation. The weak expression of VEGF and bFGF in both experimental and control groups were found in the first week. Since the second week the VEGF and bFGF expression in experimental group began to increase with a peak in the 6th week, and began to decrease after 8 weeks. In the control group, the weak VEGF and bFGF expression were shown during the observation. ConclusionSIS functions as a carrier for exogenous growth factors release in rat bladder regeneration.

Bladder Regeneration by Small Intestinal Submucosa with Release of Exogenous Growth Factors / 中国康复理论与实践

@#ObjectiveTo explore the release of exogenous growth factors from small intestinal submucosa (SIS) in bladder regeneration. MethodsThe release of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) from SIS in vitro were evaluated by ELISA and MTT method. The defected bladder walls of rats in experimental group were repaired with porcine small intestinal submuscosa. Partial bladder mucosa and smooth muscle of the rats in control groups were destroyed. At regular intervals, the VEGF and bFGF expression were observed by histological and immunohistochemical methods. ResultsThe concentration of bFGF and VEGF released in vitro from SIS in PBS solution were (121.8±2.683) ng/L and (93.8±3.033) ng/L respectively, and showed proliferation of vascular endothelial cell. In the SIS framework, the capillary and smooth muscle were observed followed histological evaluation. The weak expression of VEGF and bFGF in both experimental and control groups were found in the first week. Since the second week the VEGF and bFGF expression in experimental group began to increase with a peak in the 6th week, and began to decrease after 8 weeks. In the control group, the weak VEGF and bFGF expression were shown during the observation. ConclusionSIS functions as a carrier for exogenous growth factors release in rat bladder regeneration.