【摘要】 目的 探討細菌性膠原酶對創口感染情況的影響。 方法 2006年11月-2006年12月，對28只新西蘭兔分為實驗組和對照組，分別予細菌性膠原酶溶液及生理鹽水浸潤創口并縫合。觀察創口感染及局部皮膚的炎性細胞浸潤情況。 結果 實驗組與對照組創口感染率差別無統計學意（Pgt;0.05），炎性細胞差別無統計學意義（Pgt;0.05）。 結論 細菌性膠原酶在創傷修復過程中不能直接降低感染率，對炎性細胞的遷移并無明顯的作用。 【Abstract】 Objective To assess the effects of bacterial collagenase on the wound infection. Methods A total of 28 New Zealand rabbits have chosen from November to December 2006, and were divided into a laboratorial group and a control group. We sutured the wounds and soaked them by the bacterial collagenase liquid or by the physiologic saline solution. The infection and the inflammatory cells of the skin around the wound were observed. Results The difference of the infection rates between the two groups was not statistically significant (P=0.62), nor the difference of inflammatory cells (P=0.84). Conclusions Bacterial collagenase can not decrease the rate of infection directly, and had no obvious effect on the transferring of inflammatory cells.
目的:比較早期預警評分(EWS)和改良早期預警評分(MEWS)預測急診住院患者死亡風險的能力。方法:隨機抽取409名四川大學華西醫院急診住院患者,采用EWS和MEWS對患者進行評分,使用ROC曲線比較兩者預測急診住院患者死亡風險的能力。結果:EWS預測患者住院的曲線面積為0.849±0.132,其最佳截斷值為4分;MEWS預測急診患者住院的曲線下面積為0.876±0.124,其最佳截斷值為5分。結論:MEWS較EWS對于預測急診住院患者死亡風險有較高的效能,還可以進一步改進提高其預測能力。
Objective To elucidate the effect of first-aid fast track in triaging earthquake trauma patients by studying the earthquake trauma patients staying in the Emergency Department of West China Hospital after “5?12 Wenchuan Earthquake” so as to accumulate experience in the treatment of disaster traumas. Methods A retrospective study was done on earthquake trauma patients staying in the Emergency Department of West China Hospital after “5?12 Wenchuan Earthquake” from 14:28 May 12, 2008 to 14:27 May 15, 2008. Differences in care given during the time period were analyzed. Results There were 536 earthquake trauma patients in West China Hospital within 72 hours after the earthquake. Twohundred and seven earthquake trauma patients staying in the Emergency Department had an average stay of 129 minutes during the 24 hours after the quake; 104 earthquake trauma patients staying in the Emergency Department had an average stay of 97 minutes in the second 24 hours; and 226 earthquake trauma patients staying in the Emergency Department had an average stay of 86 minutes in the third 24 hours. Each consecutive day showed shorter average stays. Conclusion The first-aid fast track not only guarantees earthquake trauma patients are saved as soon as possible but also shortens the time in the Emergency Department.
The eye-computer interaction technology based on electro-oculogram provides the users with a convenient way to control the device, which has great social significance. However, the eye-computer interaction is often disturbed by the involuntary eye movements, resulting in misjudgment, affecting the users’ experience, and even causing danger in severe cases. Therefore, this paper starts from the basic concepts and principles of eye-computer interaction, sorts out the current mainstream classification methods of voluntary/involuntary eye movement, and analyzes the characteristics of each technology. The performance analysis is carried out in combination with specific application scenarios, and the problems to be solved are further summarized, which are expected to provide research references for researchers in related fields.
Totally thoracoscopic surgery is a branch of minimally invasive cardiac surgeries, and its operational indicators are expanding with the development of the medical and imaging devices compared with median sternotomy and other minimally invasive cardiac surgeries (such as thoracoscope-assisted small incision surgery and robotic surgery). The learning curve is significantly shortened through the professional technique training. Totally thoracoscopic cardiac surgery has many advantages, such as minor trauma, few serious complications, fast recovery, high patient acceptance and being suitable to our country's current situation. Therefore it will be one main direction of minimally invasive cardiac surgery. This article mainly introduced the current status of totally thoracoscopic technology in the field of cardiac surgery in China.
Objective To evaluate the effectiveness and safety of foscarnet sodium in the treatment of chronic hepatitis B. Methods We searched MEDLINE, EMbase, The Cochrane Library and CNKI from 1978 to June 2006. Randomized controlled trials of foscarnet sodium versus other drugs or no drugs in the treatment of chronic hepatitis B were identified. The quality of the included trials was evaluated by two reviewers independently. Meta-analysis was done using The Cochrane Collaboration’s RevMan 4.2.7. Results Seven studies (337 patients) were included; one compared foscarnet sodium versus interferon, and the other six compared foscarnet sodium versus no drugs. All the included studies were graded in terms of the quality of randomization, allocation concealment and blinding. All 7 studies were graded as level C. The meta-analysis showed that: ① foscarnet sodium was not significantly different from interferon in clinical efficacy, liver function, negative-conversion rate of virological markers and side effects. ② compared with the no drugs group, the negative-conversion rate of virological markers was significantly higher for the foscarnet sodium group, HBeAg (RR 6.20, 95%CI 1.76 to 21.79) and HBV-DNA (RR 4.13, 95%CI 1.32 to 12.86); but there were no significant differences in clinical efficacy, liver function and side effects. Conclusions Available evidence shows that: in the treatment of chronic hepatitis B the effectiveness and safety of foscarnet sodium are not significantly different from interferon, but only one trial is included in this review, so the evidence is weak. Compared with no drugs, foscarnet sodium significantly improves the negative-conversion rate of virological markers, but the evidence is insufficient to show whether foscarnet sodium could improve clinical efficacy and liver function, as well as reduce side effects.
【摘要】 目的 評價簡化腎臟病膳食改良試驗（MDRDa）方程以及國內兩個改良MDRD方程（中國方程1、2）預測中國慢性腎臟病患者腎小球濾過率（glomerular filtration rate，GFR）的適用性。 方法 選擇2008年1-12月住院慢性腎病患者250例，用99mTc-DTPA腎動態顯像法測定GFR（sGFR），同時測定血清肌酐、尿素氮，根據年齡和性別分別用簡化MDRD方程、中國方程1和中國方程2預測GFR，即eGFRa （簡化MDRD方程）、eGFR1 （中國方程1）和eGFR2（中國方程2），以sGFR為參考值，將估計的eGFRs進行比較。 結果 各方程eGFRs與sGFR之間呈顯著相關關系。其中中國方程2的估算eGFR2與sGFR具有良好的一致性，總體偏差最小，準確性最高。 結論 中國方程2優于簡化MDRD方程和中國方程1，可用于中國慢性腎病人群eGFR的計算。【Abstract】 Objective To evaluate the applicability of three equations for glomerular filtration rate (GFR) in Chinese patients with chronic kidney disease (CKD). Methods A total of 250 patients with CKD which were diagnosed according to K/DAQI guidelines between January and December 2008 were selected. GFR were estimated with Chinese equation 1 (eGFR1), Chinese equation 2 (eGFR2) and abbreviated MDRD (eGFRa) separately, and the results were compared with that of 99mTc-DTPA(sGFR). Results The eGFRs of the three equations were correlated significantly with sGFR. Chinese equation 2 seemed to be the best; eGFR2 showed less bias and higher accuracy than other equations. Conclusion Chinese equation 2 for estimation of GFR may be more accurate in Chinese CKD patients.
Objective To evaluate the effectiveness and safety of foscarnet and ganciclovir for cytomegalovirus retinitis associated with acquired immune deficiency syndrome (AIDS). Methods We searched MEDLINE (1966 to 2005.12), EMBASE (1974 to Dec.2005), The Cochrane Library (Issue 4,2005), CBM (1978 to Dec.2005), CMCC (1994 to Dec. 2005), CNKI (1994 to Dec. 2005) and VIP (1989 to Dec. 2005). We identified randomized controlled trials of foscarnet versus ganciclovir. Two independent reviewers collected and evaluated details of study populations, interventions, and outcomes using a data extraction form. We conducted meta-analysis of the homoeonomous data. Result Three studies involving 451 patients were included. Meta-analysis showed foscarnet was better than ganciclovir with the following outcomes: mortality (RR=0.84, 95%CI 0.70 to 1.00, P=0.05); male genital ulcers (RR=1.29, 95%CI 0.60 to 2.82, P=0.002). There were no significant differences in ocular symptoms, relapses and other side effects. Conclusion Foscarnet in the treatment of cytomegalovirus retinitis in AIDS patients may be more benefical than ganciclovir with regard to mortality and male genital ulcers, but the supporting evidence is not very b because there are only three trials.
Objective To evaluate the effectiveness and safety of treatment with Fuzheng Huayu capsule for liver fibrosis of chronic hepatitis B (CHB). Methods We searched MEDLINE, EMBASE, Cochrane Database of Controlled Trials (CCTR), CBMweb and CNKI up to March 2008. The references of retrieved literature were also hand searched. Randomized controlled trials (RCTs) which compared Fuzheng Huayu capsule with placebo or other drugs were collected. Data extraction and quality assessment were performed by two reviewers independently. The Cochrane Collaboration’ s software RevMan 4.2.10 was used for data analyses. Results Seven RCTs involving 590 cases of liver fibrosis of CHB were included. As for their methodological quality, one was graded A, one was graded B and the others were graded C. We carried out subgroup analyses based on treatment course and intervention measures. In terms of reducing haluronic acid, Fuzheng Huayu capsule was more effective than Huoluo Shugan capsule when the treatment course was 3 months (WMD=–61.75, 95%CI –105.20 to –18.30); significant differences were also noted between Fuzheng Huayu capsule and placebo (WMD=–187.72, 95%CI –244.23 to –31.21) or Huoluo Shugan capsule (WMD=–120.03, 95%CI –158.41 to –81.65) when the treatment course was 6 months. In terms of reducing IV-C, Fuzheng Huayu capsule was more effective than Gantaile when the treatment course was 6 months (WMD=–72.32, 95%CI –84.30 to –60.34). As for improving liver fibrosis at stage S, significant differences were observed between Fuzheng Huayu capsule and Gantaile (RR=2.33, 95%CI 1.37 to 3.96) or Huoluo Shugan capsule (RR=1.30, 95%CI 1.03 to 1.65). Except a very small number of gastrointestinal reactions, no significant adverse reactions were reported. Conclusion Fuzheng Huayu capsule is effective in reducing haluronic acid and improving liver fibrosis at stage S, especially when the treatment course is prolonged from 3 months to 6 months. No significant adverse reactions are reported. Because most of the included trials are of poor quality and small sample size, more high-quality RCTs are needed.
【Abstract】 Objective To study the outcome of wound-heal ing hydrogel in treating chronic venous ulcer of lowerextremities so as to find a new therapy. Methods From April 2007 to September 2007, 60 patients with chronic venous ulcer of lower extremities were randomly assigned to wound-heal ing hydrogel group (group A, 30 cases) and control group (normal sal ine, group B, 30 cases). In group A, there were 24 males and 6 females, aging (57.3 ± 6.8) years; the disease course was (2.9 ± 0.7) years; and the ulcer area was (3.4 ± 0.6) cm2. In group B, there were 20 males and 10 females, aging (60.1 ± 7.4) years; the disease course was (3.3 ± 0.9) years; and the ulcer area was (3.1 ± 0.4) cm2. There were no differences in age, area of ulcer and course of disease between two groups (P gt; 0.05). The area of ulcer was measured every week after the treatment, and the effect of treatmentwas evaluated after 15 days. Results The ulcer area of 7 days and 14 days after treatment was (2.6 ± 0.7) and (1.1 ± 0.2) cm2 in group A, and (2.8 ± 0.6) and (2.3 ± 0.7) cm2 in group B, respectively; showing no statistically significant differences 7 days after treatment (P gt; 0.05), and showing statistically significant difference 14 days after treatment between two groups (P lt; 0.05).The average heal ing time was (12.0 ± 1.7) days in group A, and (31.0 ± 2.9) days in group B, respectively, showing statisticallysignificant difference (P lt; 0.01). The results were excellent, good, fair and poor in 16, 9, 4 and 1 of group A , and were in 3, 9, 14 and 4 of group B, respectively; showing statistically significant difference (P lt; 0.01). Conclusion Wound-heal ing hydrogel is effective in treating chronic venous ulcer of lower extremities.