OBJECTIVE To investigate the distribution and resistance of bacteria of nosocomial infection in ICU.METHODS A total of 128 strains were detected by double-disc synergy test.RESULTS Among 128 strains from ICU,Gram-negative bacilli,accounted for 61 strains(47.65%),fungi for 48(37.5%),and Gram-positive cocci for 19(14.84%).Escherichia coli and Klebsiella pneumoniae were 73.00% and 55.13%.CONCLUSIONS The strains isolated from ICU are antibiotic-resistant.It is very impotant to select antibiotics correctly for infection of the patients in ICU according to the results of antibiotic susceptibility tests.

Objective To investigate the effects of cinnamic acid to enhance the exercise endurance in mice .Methods Through the exhaustive swimming to establish mice exhaustive exercise model ,the mice were divided into control group ,exercise control group and exercise cinnamic group(n=10) ,the mice exhaustive swimming time were comparted ,blood lactic acid(LAC) lev‐els were used to explore the endurance of cinnamic acid in mice;the super oxide dismutase (SOD) ,malondialdehyde (MDA) and peroxidase (CAT) content in liver homogenates were used to detect mice endurance enhancement and antioxidant capacity of cin‐namic acid ,and expression of Na+ /K+‐ATP enzyme ,Ca2+ /Mg2+‐ATP enzyme on mice quadriceps by Western blot to further study its effect on improving exercise capacity in mice .Results Cinnamic acid significantly prolonged the swimming time of mice;Exercise cinnamic group compared with control group:although the LAC content in plasma elevated ,the difference was not statistically sig‐nificant(P>0 .05) ,SOD and CAT in liver homogenate was significantly decreased(P< 0 .05) ,MDA increased significantly(P<0 .01) ,CAT was decreased but with no statistically significant(P>0 .05) ,the expression level of Na+ /K+‐ATP enzyme and Ca2+ /Mg2+‐ATP enzyme decreased significantly (P< 0 .01) .Exercise control group compared with control group:the LAC content in plasma increased significantly(P<0 .01) ,SOD and CAT in liver homogenate was significantly decreased(P<0 .01) ,MDA increased significantly(P< 0 .01) ,expression level of Na+ /K+‐ATP enzyme and Ca2+ /enzyme Mg2+‐ATP decreased significantly (P<0 .01);Exercise cinnamic group exercise control group:the LAC content in plasma was significantly reduced(P<0 .01) ,SOD and CAT in liver tissue significantly increased(P< 0 .01) ,MDA decreased significantly(P<0 .01) ,CAT decreased significantly(P<0 .01) ,the expression level of Na+ /K+‐ATP enzyme and Ca2+ /Mg2+‐ATP enzyme decreased significantly(P<0 .05) .Conclusion Cinnamic acid has good oxidation resistances and anti‐fatigue ability .

Objective To study the combined effect of chlorotoluron and atrazine on the testis of mice. Methods Kunming mice were divided into groups and treated with chlorotoluron and atrazine alone or in combination by gavage at different doses for 25 consecutive days. Microscope and electron microscope were used to observe the morphological changes. Results The herbicides used alone or in combination, at all the test doses, caused the morphological changes in degrees in the testis. Under the light microscope, seminiferous epithelium arrayed loosely and disorderedly, spermatogenic cell shed, and layers lessened compared with the control group. Under the electron microscope, mitochondria in the seminiferous epithelium appeared vacuolated, karyotheca swelled, bent and the function of sustentacular cell declined. Compared with alone use groups, the pathological changes were more serious in combination use groups. Conclusion Chlorotoluron and atrazine can produce a combined toxic effect on the testis of mice.

Objective To investigate prognosis of endometriosis and to determined correlative factors of pelvic pain associated with endometriosis after conservative surgery.Methods The clinical data in patients with pelvic pain related to endometriosis and underwent surgery treatment from January 2000 to September 2009 in Beijing Chaoyang Hospital were collected and sorted,then the patients were followed up.The data were analyzed by statistical software SPSS 13.0 for windows.Results A total of 332 patients with endometriomas were underwent conservative surgery,281 (84.6％,281/332) cases of them relieved pelvic pain.The univariate analysis showed that the effects were signficantly with age,Douglas pouch reconstruction,postoperative medical therapy,presacral neurectomy (PSN) and combined adenomyosis (all P＜0.05).The multivariate analysis also showed that age(OR=0.946,P＜0.01),Douglas pouch reconstruction (OR=0.208,P＜0.01),postoperative medical therapy (OR=0.504,P＜0.01),PSN (OR=0.121,P＜0.05) and combined with adenomyosis (OR=2.528,P＜0.01) were also the correlative factors to prognosis.Conclusion The protective factors for prognosis of pelvic pain associated with endometriosis included age,Douglas pouch reconstruction,postoperative medical therapy and PSN,while the risk factor was combined with uterine adenomyosis.

Objective To investigate the operative treatment of Sanders' type Ⅲ displaced intra-articular fractures of the calcaneus using a small dorsolateral incision.Methods From October 2006 to April 2012,90 patients with displaced intra-articular calcaneal fracture of sanders' type Ⅲ were treated by open reduction and internal fixation through a small dorsolateral incision at our department.The skin incision was made from the distal tip of the fibula to the base of the fourth metatarsal.They were 69 men and 21 women,aged from 17 to 61 years (average,39 years).On the right side were 49 cases and on the left side 41 cases.According to Sander's classification,26 fractures were of type Ⅲ AB,36 of type Ⅲ AC and 28 type Ⅲ BC.The displacements of articular facet were all larger than 1 mm.The foot functions were evaluated before and after operation by the American Orthopedic Foot and Ankle Society (AOFAS) scoring system.Results For each patient,4 to 6 calcaneal cannulated screws of 4.0 mm and 2 full threaded screws of 6.5 mm were used.No incision infection,skin necrosis or injury to the posterior tibial nerve or vessels occurred after surgery.Seventy-six patients were followed up for 10 to 56 months (average,20.5 months).Clinical union was achieved after 8 to 12 weeks (average,9.5 weeks).The lateral and axial X-ray films of the calcaneus at the last follow-up showed fine reduction and fixation of the fracture fragments and significant improvements in the length,width,height,and B(o)hler and Gissane angles of the calcaneus compared with the preoperation (P ＜ O.05).The ankle and hindfoot scored 70 to 100 AOFAS points at the last follow-up.Forty-five cases were excellent,24 good,5 fair and 2 poor (excellent to good rate of 90.8％).Follow-up observed no infection,nonunion or osteomyelitis.Conclusion Open reduction and internal fixation through a small dorsolateral incision is a good option for Sanders' type Ⅲ calcaneus fractures with a displacement of more than 1 mm,because it leads to minimal soft tissue damage,excellent exposure and convenience for later removal of internal fixators and subtalar arthrodesis.

AIM:To observe the changes of heart function and the expression of serum cardiac troponin I ( cT-nI) in early type 2 diabetic rats, and to explore the role of cTnI in the development of type 2 diabetes and early diabetic cardiomyopathy .METHODS:The type 2 diabetes rat model was established by an injection of streptozotocin after high fat diet (5 weeks).The rats were randomly divided into control group , model group of 2 weeks, and model group of 4 weeks. M-mode echocardiography was performed for echocardiographic measurements .Fasting blood glucose ( FBG) , total choles-terol ( TC) , triglyceride ( TG) , high density lipoprotein-cholesterol ( HDL-C) , low density lipoprotein-cholesterol ( LDL-C) , fasting insulin ( FINS) and cTnI levels were tested .HE staining was used to observe the pathological changes of myo-cardial structures .The alteration of cTnI in myocardium was determined by Western blot .RESULTS:Compared with nor-mal group , the levels of TC , TG and LDL-C in type 2 diabetic rats were significantly increased , HDL-C levels were signifi-cantly reduced .Cardiac histological analysis revealed that type 2 diabetes induced cardiomyocytes degeneration and necro-sis.The expression of cTnI increased significantly in diabetic groups compared to control group , and that in model group of 4 weeks increased far more than that in model group of 2 weeks (P<0.05).CONCLUSION:The increased level of cTnI and the change of the heart function may be associated with the development diabetic cardiomyopathy .These changes are valuable for the early clinical diagnosis of myocardial injury in diabetic cardiomyopathy .

Objective To evaluate the clinical applied effects of tibial shaft fracture with intramedullary interlocking nail and small incision. Methods From November 2004 to October 2005,47 cases of tibial shaft fracture were treated with intramedullary interlocking nail, all the cases were adopted with small incision and intramedullary interlocking nail, and analysed the curative effects Results 47 cases were followed-up ranged 8 ～ 27 months. All cases resumed normal knee function 6 to 12 weeks after operation,without nonunion and malunion. Conclusion Treatment of tibial shaft fracture with intramedullary interlocking nail and small incision had the advantages of little trauma,good stability, high rate of fracture union and rapid functions recovery. It is worthy deserveed to be put into application and populatization in clinics.

Objective To elucidate the effect of Ge-132 on the growth of melanocytes. Mothods Melanocyes from epidermis were cultured and purified ;the second generation of the cell was used for study ;the cells were divided into two groups randomly,to group A, Ge-132 was added to the media at 0.04mg/L ;to group B ,common culturing method was used without Ge-132. After 5d, the cells were seperated by digestion for study by transmission electronic micro- scope. ResultsCompared to group B, the vacuioes of the cells were increased,mitochondria distended, endoplasmic reticulum dilated and the number of melanosome declined in the group A. Conclusion Ge-132 can inhibit the melanocyte＇s growth at a certain concentration and might be used for treating pigmented diseases.

Objective To discuss the timing and methods of operative treatment of acetabular fractures of AO Type C (double- column fractures). Methods From February, 1999 to January, 2004, we treated operatively 46 cases of AO Type C acetabular fractures, including 23 cases of C- 1 type, 14 cases of C- 2 type, and 9 cases of C- 3 type. 15 cases were treated through ilioinguinal approach, 10 cases through improved Kocher- Langenbeck approach, and 21 cases through combined anterior and posterior approaches. There were 3 groups of patients according to the time from injury to operation: 15 cases got operation within 1st week after injury (Group A); 23 cases within 2nd week (Group B); 8 cases within/after 3rd week (Group C). All of them were checked with radiography and 3D CT scan before and after operation. Results 34 cases( 73.9% ) obtained anatomical reduction, 8 cases( 17.4% ) got imperfect reduction, and 4 cases( 8.7% ) had unsatisfactory reduction. All the patients were followed up for 1 year to 4 years, averaging 31 months. According to D' Aubigne and Postel Hip Score, joint function was rated as excellent in 32 cases( 69.6% ) , good in 5 cases( 10.9% ) , fair in 5 cases ( 10.9% ) and poor in 4 cases ( 8.7% ) . As far as reduction was concerned, there was a significant difference (P0.05). As far as joint function was concerned, there was a significant amelioration in Groups A and B compared with Group C (P0.05) between group A and Group B. Conclusions Good knowledge of AO classification of acetabular fractures combined with particular radiological data can result in correct diagnosis of Type C acetabular fractures. Operations should be carried out within 2 weeks after injury and efforts should be made to ensure anatomical reduction. To achieve good clinical results in treatment of Type C acetabular fractures, suitable approaches and correct reduction and internal methods are essential

OBJECTIVE To study the dynamic changing rule and effective factors of in-door air quality of cleanliness in operating room.METHODS On-the-spot air sampling method was used to examine the efficacy in purifying bacteria in operating room.RESULTS The bacterial count in air of operation area was significantily higher than that of the peripheral area(P