Objective To identify the correlative and risk factors of non-oxygenation factors associated with postoperative prolonged mechanical ventilation (PMV) of aortic dissection(AD).Methods AD patients undergoing surgery during January 2010 and January 2015 were enrolled.Prolonged mechanical ventilation was defined that duration of ventilation more than 48 h.Results There were 240 patients,average age was (50 ± 12)years.The correlative factors with postoperative PMV were:pre-opervative white blood cell (WBC) (r =0.241,P =0.003),emergency operation (r =0.263,P =0.004),Debakey type (r =-0.379,P =0.000),duration of operation (r =0.329,P =0.000),postoperative diastolic pressure (r =-0.205,P =0.007),heart rate (r =0.246,P =0.001),postoperative hemoglobin (r =-0.213,P =0.005),calcium(r =-0.262,P =0.001),glucose (r =0.274,P =0.000),lactate(r =0.272,P =0.000) and pericardial effusion (r =0.239,P =0.032).Logistic analysis indicated that:the duration of operation,WBC and postoperative blood calcium were:2.063,1.285,0.016,respectivly(all P ＜ 0.05).Conclusions The correlative factors were:preoperative WBC,emergency operation,Debakey Type,duration of operation,heart rate,postoperative diastolic pressure,hemoglobin,calcium,glucose,lactate,and pericardial effusion.Duration of operation,WBC and postoperative blood calcium were risk factors predicting PMV.

Sepsis has relatively high morbidity and mortality in patients at intensive care unit (ICU). With the study of sepsis having continued to develop in recent years, the defects existing in this research have unceasingly exposed. Because the lack of design process of international standardized clinical randomized controlled trials (RCT) for septic patients, the situation of incomplete data record exists in these clinical studies, that may further affect the interpretation of the research results, therefore it is in urgent need to have an international standardized RCT design process for septic patients.

AIM: Apply the newly invented method of suppression subtractive hybridization to scan the mitochondria genes expression of hippocampus neurons in post ischemia/reperfusion rats. METHODS: Decapitate the rats suffering 10 min of whole brain ischemia and 24 h of reperfusion in Pulsinelli’s 4 vessels occlusion ischemia/reperfusion model. Dissociated hippocampus and isolated mRNA. After reversed transcription, use SSH to subtract the common sequences, then use suppressed PCR to amplify the differentially expressed sequences. After cloning and DNA sequencing, the dot hybridization was used to finally identify the differential gene expression. RESULTS: In the 78 positive clones acquired from cloning, 7 clones represent differential gene expression after confirmed by clone PCR, dot blot and DNA sequencing. The DNA sequencing data indicate these clones are ESTs of Cytochrome c oxidase subunit and NADH-ubiquinone oxidoreductase chain 4 gene. CONCLUSION: Cytochrome C oxidase mRNA level changs during brain ischemia /reperfusion. The differential expression of NADH-ubiquinone oxidoreductase chain 4, one of those 13 subunits of subcomplex ?, suggests that subcomplex ? may have important function associated with pathophysiologic changs in reperfusion injury.

Objective:To study the clinical manifestations and treatments of closed injuries of the cervical trachea.Method:We carried out a retrospective study of the clinical manifestations, diagnosis and treatment of patients with closed injuries of the cervical trachea that have been treated in our hospital over the last ten years. We analyzed commonly occurring clinical problems, key points of surgical treatment, and postoperative recovery. Fourty-one patients with acute closed injuries of the cervical trachea underwent emergency tracheotomy or anesthesia orotracheal intubation and surgical repair of the trachea within 24 to 48 hours. Twenty six patients had their tracheotomy tubes extubated after surgery and had their anesthesia orotracheal tubes extubated within 48 hours postoperatively; tracheotomy tubes remained in the airway in 15 patients postoperatively, and of them, 12 had extubation successfully in 2 weeks postoperatively, while the remaining 3 were left intubated due to laryngotracheal stenosis. Among the 3, 2 underwent further surgical repair and recovery, and 1 had a stent inserted.Result:Twenty-eight patients fully recovered postoperatively. Ten patients mostly recovered postoperatively exception for hoarseness, and their fundamental phonation function recovered within 2 to 3 months but with poor movement of the vocal cords. The breathing and swallowing function of the other 3 patients recovered after the surgery, but they suffer from hoarseness.Conclusion:In the treatment of closed disruption of the cervical trachea, prompt diagnosis and timely surgical repair of the structure and function of the trachea are key to saving the patients' lives and avoiding tracheal stenoses.

Objective To describe the monitoring and control of pan-drug resistant Acinetobacter baumannii (XDRABA) colonization and infection in a medical intensive care unit (ICU),and to summarize the effective measures of surveillance of nosocomial infection and control.Methods Nonsurgical patients admitted to medical ICU of Peking University People's Hospital from September 2009 to April 2013 with length of ICU stay over 48 hours were surveyed.Number of cases of colonization and infection of XDRABA per month was recorded,and the clinical features of patients with XDRABA colonization and infection were observed.The control of XDRABA colonization and infection was divided into three stages:① Outbreak stage,from September 2009 to August 2010,the infection control measures included stringent hand hygiene and surface disinfection,use of disposable ventilator tubes and improvement in antibiotics use.② Environmental control stage,from September 2010 to April 2012,the infection control measures consisted of on-the-spot investigation,isolation of patients with XDRABA colonization and infection,tubes terminal environment disinfection.③ Microbial screening stage,from May 2012 to April 2013,throat,nose and axillary swabs were obtained when the patients admitted.Results From 2009 September to 2013 April there was a total of 193 patients colonized or infected with XDRABA,and 64 patients died (mortality rate was 33.2％),and 133 (68.9％) patients were on mechanical ventilation.Patients with XDRABA colonization and infection had severer illness [acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score 20.3 ±6.7],longer ICU stay [(34.6 ± 13.8) days].In outbreak stage,number of cases with XDRABA colonization and infection was 5-9 per month.In environmental control stage,case number of XDRABA colonization and infection was 3-6 per month.In microbial screening stage,case number of XDRABA colonization and infection,which were already present,was 2-4 per month,and they were mainly admitted from emergency department (59.5％).The number of cases of ICU acquired XDRABA colonization and infection decreased from 2-3 to 0-1 per month.Conclusion To control the colonization and infection of XDRABA,monitoring of microorganism,hand hygiene,isolation of patients with XDRABA colonization and infection,and stringent environment disinfection were very necessary.

OBJECTIVE To surveillance invasive fungal infection rate in SICU,in order to direct intervention to prevent invasive fungal infection.METHODS The samples collected from SICU patients in our hospital between Jan 2003-Nov 2008 were cultured.RESULTS According to the diagnosis standard of nosocomial infections,75 case of 3699 patients were isolated fungi.During 6-years invasive fungal infection rate is 2.027%,(1.05%-2.63%).Totally 86 fungi strains were isolated,the majority of them being Candida albicans,accounting for 46.51%;Candida glabrata 22.09%;Candida tropicalis 13.95%.CONCLUSIONS During 6-years,invasive fungal infection rate and incidence density do not increase.Candida are the major pathogens of fungal infections in SICU.

OBJECTIVE: To explore the immunological mechanism of exfoliative tongue fur in children with asthma. METHODS: Thirty-nine children with asthma, twenty-eight children with repetitive respiratory tract infection (non-asthma) and eleven healthy children were divided into five groups, which were asthma with exfoliative fur or with non-exfoliative fur groups, non-asthma with exfoliative fur or with non-exfoliative fur groups and normal control group. The concentrations of keratin 13 and bcl-2 in cells exfoliated from tongue fur were detected by immunohistochemical method. The expression levels of blood cell chemokine receptor-3 (CCR-3) and CD4(+) were examined by flow cytometry, and the levels of serum cortisol and IgE were detected by radioimmunoassay. RESULTS: The levels of blood CD4(+) and CCR-3 of children with asthma and exfoliative fur were higher than those in the asthma with non-exfoliative fur group and the normal control group (P<0.05). The serum level of cortisol in the groups of asthma with exfoliative fur and non-asthma with exfoliative fur were lower than that in the other groups (P<0.05). The serum levels of IgE in asthma with exfoliative fur or with non-exfoliative fur groups were higher than that in the other groups (P<0.05). Concentrations of keratin 13 in the cells exfoliated from tongue fur in the groups of asthma or non-asthma with exfoliative fur were lower than that of the other groups (P<0.05). There was no significant difference of expression level of bcl-2 in the cells exfoliated from tongue fur among these five groups. CONCLUSION: There is a reasonably close relationship between the formation of exfoliative tongue fur and the immune system such as low level of serum cortisol and high levels of blood CD4(+) and CCR-3, which may all promote the formation of exfoliative fur. The disability of keratinization and apoptosis of epithelial cells of tongue may also be one cause for its formation.

BACKGROUND:Mason II type and III type radial head fractures with massive bone are mainly treated by open reduction and metal fixation, but metal implants have to be removed in the second operation, which increased patients’ travail and financial burden. Absorbable screw/rod also can be used to treat radial head fractures, and has its special advantages due to the low price and no second operation. OBJECTIVE:To compare the clinical therapeutic effects of absorbable rod and Herbert screw for the treatment of Mason II or III type radial head fractures. METHODS:A total of 80 patients with Mason II and III type radial head fractures were equal y assigned to experimental and control groups. They received open reduction and internal fixation. The experimental group was treated with absorbable rod and the control group received Herbert screw. RESULTS AND CONCLUSION:A total of 79 patients were fol owed up for averagely 34 months. No significant difference in average operative time, fracture healing time, Broberg and Morrey elbow scores and incidence of complications was detected between the experimental and control groups (P>0.05). However, treatment costs were lower in the experimental group than in the control group (P<0.05). Results indicated that the therapeutic effects between absorbable rod and Herbert screw for Mason II or III type radial head fractures were similar. However, absorbable rod for radial head fractures can avoid the second operation for removal of the implant. Therefore, we recommend absorbable rod in the choice of internal fixation materials.

BACKGROUND:At present, the methods of treating unstable comminuted radial head fractures contain open reduction and internal fixation and metal prosthesis replacement. There were success cases treated by the two methods, but some shortcomings simultaneously existed.
OBJECTIVE:To compare the clinical therapeutic effects of replacement of the radial head with metal prosthesis with open reduction and internal fixation for the treatment of unstable comminuted radial head fractures.
METHODS:A prospective randomized control ed analysis was performed in 45 cases of unstable comminuted radial head fractures. These cases received open reduction and internal fixation and metal prosthesis replacement. This study compared the Broberg and Morrey elbow joint function score and the incidence of complications after fixation, and performed statistical analysis.
RESULTS AND CONCLUSION:The subjects were fol owed up for 1-5 years, averagely 2.8 years. According to Broberg and Morrey scores, the average score was 90.1 and the incidence of complications was 13.6%in the prosthesis replacement group. The average score was 76.8 and the incidence of complications was 47.9%in the open reduction. Significant differences were visible between the two groups (P<0.01). Compared with the open reduction group, prosthesis replacement for unstable comminuted radial head fractures obtained better joint function and lower incidence of complications.

Objective To investigate the incidence and the risk factors of major adverse cardiac events of critical care patients after noncardiac surgery.To study the incidence of myocardial injury after noncardiac surgery (MINS).Methods A retrospective analysis of critical care patients (n =1 087) after noncardiac surgery from January 2012 to January 2013 in our hospital was carried out.The clinical data of the medical history, intraoperative conditions, postoperative conditions and cardiac troponin Ⅰ (cTNI) were collected.Major adverse cardiac events included unstable angina, non fatal myocardial infarction, severe arrhythmia, heart failure and cardiovascular death.Risk factors of major adverse cardiac events of critical care patients after noncardiac surgery were analyzed using Logistic regression.Results The 30 d non cardiac surgery incidence of major adverse cardiac events was (94/1 087) 8.6％, the incidence of MINS was (168/1 087) 15.5％, Logistic regression analysis showed that the risk factors of major adverse cardiac events after non cardiac surgery were age (OR 1.03,95％ CI 1.01-1.05, P =0.002), a history of chronic renal insufficiency(OR 3.12,95％ CI 1.44-6.74,P =0.004), rise of cTNI 24 h after operation (OR 2.04,95％ CI 1.16-3.58,P =0.014) and use of vasopressor drugs within 24 h after operation (OR 2.34,95％ CI 1.25-4.38,P =0.008).Conclusions The incidence of major adverse cardiac events and the MINS of critical care patients after noncardiac surgery is high.Old age, history of chronic renal insufficiency, rise of cTNI 24 h after operation and vasopressor drugs within 24 h after operation are the independent risk factors.