Objective To explore the prognostic factors in patients with acute respiratory failure due to chronic obstructive pulmonary disease (COPD) in EICU. Method Clinical data of 39 patients admitted to EICU from May 2005 to May 2007 were retrospectivley analyzed. Results In death group, the pulmonary artery pressure (PAP) ,creatinine (Cr) ,APACHE-Ⅱ score, and APACHE-Ⅲ score were increased (P < 0. 05) and ICU stays were prolonged (P < 0.05) ; Respiratory rate (RR) and Glasgow coma score (GCS) were decreased (P < 0.05). Conclusion PAP, Cr, APACHE-Ⅱ score,APACHE-Ⅲ score,RR and GCS predict the prognosis of the patients with acute respiratory failure due to chronic obstructive pulmonary disease.

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ObjectiveTo investigate the prevalence and the characteristics of heart failure (HF) in medical intensive care unit (ICU) so as to explore the factors contributing to HF.Methods A retrospective analysis of the data of HF was carried out in 887 HF patients (54. 2％ ) males; age (69.83± 13.57) years oldadmitted to the medical ICU from October 2006 through June 2010. Clinical variables were systematically reviewed for all enrolled patients. HF as either major or additional diagnosis was recorded and the potential risk factors for HF were explored. Left ventricular systolic function was evaluated in HF patients by using ejection fraction (EF) measured by echocardiography. Multivariate Logistic regression analysis was used to identify the independent factors contributing to HF in medical ICU patients. Results Of the 887 patients, 74. 1％ aged 65 years or over, and 53％ had organ dysfunction. The prevalence of HF in medical ICU patients was 22. 8％. Echocardiography measurement revealed that left ventricular systolic function was preserved in 62. 5％ of HF patients with an EF ＞ 50％. Underlying heart diseases were identified in 72. 8％ of the HF patients, and coronary artery disease accounted for the vast majority (52. 5％ ), followed by valvular heart disease ( 17. 8％ ). Structural heart diseases were not identified in 27. 2％ of the HF patients. 4) After the adjustment of age and gender, multivariate regression analysis showed that coronary artery disease ( OR =7. 364, 95％ CI: 4. 979 ～ 10. 890, P ＜0. 01 ), valvular heart disease ( OR =18. 023, 95％ CI: 9. 280 ～ 35. 002, P ＜ 0. 01 ), diabetes mellitus ( OR =2. 154, 95％ CI: 1. 227 ～ 3. 784, P =0. 0076), respiratory failure ( ( OR =1. 527, 95％ CI: 1. 045 ～ 2. 229, P =0. 0285 ), and renal dysfunction ( OR =2. 638, 95％ CI: 1. 621 ～ 4. 294, P =0. 0001 ) were associated with risk increased for HF in medical ICU. ConclusionsHF is highly prevalent in medical ICU and its etiology is multi-factorial. The high rate of HF with preserved EF highlights the importance of enhanced alertness for HF with preserved systolic function in ICU.

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Objective To investigate the prevalence of multidrug resistant genes in Klebsiella pncumoniae.MethodsTwenty strains of multidrug resistant Klebsiella pneumoniae were isolated from burn patients.Susceptibility of these strains to 14 antibiotics was detected by KB method.PCR was used to detect oqxA,smrKpn,qacE,tehA,mdfA and qacEΔl-sul1 genes.ResultsThe antibiotic sensitivity rates of 20 multidrug resistant Klebsiella pneumoniae isolates to antibiotics tested were ＜ 30％ except that to imipenam.The positive rates of efflux pump genes mdfA,qacEΔl-sull and oqxA were 65％,100％ and 100％,respectively; while those ofsmrKpn,qacE and tehA were 0％,0％ and 15％.ConclusionoqxA gene has been detected in multidrug resistant Klebsiella pneumoniae from burn patients with high positive rate.

Objective To investigate the clinical characteristics of pulmonary artery sarcoma (PAS) and pulmonary thromboembolism(PTE), to improve doctors' awareness and the early diagnosis of PAS.Methods The clinical data of 10 PAS cases confirmed with biopsy were retrospectively analyzed,and 10 cases with PTE were selected as control group.Results (1) Main clinical manifestations of the two groups were chest tightness, shortness of breath, intermittent syncope, palpitations, chest pain and cough, and there were no statistical significance differences between the two groups (P＞0.05).(2)There were 2 cases (20.0％) PaO2 ＜80 mmHg in patients with PAS.However, there were 8 cases (80.0％)PaO2 ＜ 80 mmHg in control group.The two groups had statistically significant difference (x2 =7.200, P =0.023).(3) Wells score : the cases with PAS was in low risk (80.0％ and 10.0％),however, the cases of control group was in medium and high risk(90.0％ and 20.0％).The two groups had statistically significant difference (P =0.005, 0.001).(4) The two groups had no statistically significant difference in ECG, UCG, X-ray, lung ventilation/perfusion (P＞ 0.05).(5) There had statistically significant difference in terms of LDH and CRP between PAS and PET group (100％ vs.0, x-2 =10.796,P=0.003;100％ vs.0, x2 =15.000, P =0.000).There was faster ESR in PAS group than control group,and the two groups had statistically significant difference (75％ vs.0, x2=1.400, P =0.011).There was no case of D-Dimer＞500 μg,/L in PAS group, while 10 cases in control group, and the two groups had significant statistical difference (x2 =17.000, P =0.000).(6) There was 1 case (12.5％) with DVT in PAS group, 6 cases (60.0％) in PTE group, and the two groups had significant statistical difference (x2=10.568, P =0.001).(7) The CTPA in PAS group showed filling defect in the main pulmonary artery trunk (85.7％ vs.0) ,left pulmonary artery (85.7％ vs.10.0％) ,right pulmonary artery(100％ vs.10.0％) and both left and right pulmonary artery (85.7％ vs.10.0％), the two groups had significant statistical difference (x2 =13.247, P =0.001;x2 =9.746, P=0.004;x2 =13.388, P =0.000;x2 =9.746, P =0.004).Conclusion PAS and PTE can' t be distinguished from the clinical symptoms, ECG, UCG, X-ray,lung ventilation/perfusion imaging.PAS is easily misdiagnosed as PTE.More attention should be given.PAS can be identified early through the blood gas analysis, hypoxemia,Wells score, LDH, CRP, ESR, D-Dimer, DVT and CTPA.

Objective To study prospectively the safety and efficacy of the thromblytic therapy in acute submassive pulmonary thromboembolism (PTE) without randomized control.Methods A total of consecutive 177 patients with acute submassive PTE admitted to the emergency intensive care unit were screened from June of 2005 to May of 2012.After a comprehensive screening,102 patients were treated with thrombolytic therapy (TT group),and 75 with anticoagulation therapy (AT group).Clinical signs and physical examination findings were recorded 2 hours,24 hours and 7 days after treatment.Echocardiography (ECG) was repeated 24 hours later.Lung perfusion scan and CT pulmonary artery (CTPA) were repeated on the 7th day.All data was analyzed by paired t test and Chi-square test.Results ①Bleeding happened in 6 patients of TT group and in 1 patient of AT group (P ＞ 0.05),and no lethal hemorrhage occurred in the two groups.There were no statistically significant differences in demographics and clinical history of patients between TT group and AT group (P ＞ 0.05).②There were statistically significant changes in respiratory rate,heart rate and systolic blood pressure in the TT group 2 hours after treatment and great changes in systolic pressure of pulmonary artery (SPAP) and tricuspid regurgitation at 24 hours after treatment (P ＜0.01),whereas obvious change in respiratory rate in AT group was found 24 hours after treatment.③In the TT group 7 days after treatment,significant efficiency rate and total improvement of the deep vein thrombosis (DVT) identified by ultrasonography were 83.0％ and 96.2％ respectively,and those of CTPA and lung perfusion scan were 66.7％ and 98％ respectively.The efficiency of TT was significantly superior over AT in this respect (P ＜ 0.01).④The efficiency of TT given within 3 days after onset of PTE was significantly higher than that of TT conferred over 3 days after onset of PTE (P ＜ 0.01).Conclusions ①Thrombolytic therapy is safe and effective for the submassive PTE,but atypical cerebrovascular accident must be rule out first.②Thrombolytic therapy can improve the symptom of the patient in 2 hours compare with AT.③ Thrombus burden can be reduced more obviously in TT group after 7 days treatment compare with the AT group.④The effect of thrombolytic therapy depends on the time as ti given during the course of disease,the earlier administration the better efficacy.

OBJECTIVE To investigate drug resistant genes associated with beta-lactamases,aminoglycosides and sulfonamides in Pseudomonas aeruginosa isolated from burned patients.METHODS Common drug resistant genes associated with beta-lactamases,aminoglycosides and sulfonamides of 20 strains of P.aeruginosa isolated from burned patients were detected by PCR.RESULTS The positive rates of genes of TEM,aac(6′)-Ⅰb,sul1 and ant(3″)-Ⅰwere 85%,85%,90% and 10%,respectively and genes of CARB and aac(6′)-Ⅱ were both positive(100%).Genes of oprD2 were all absent and genes of SHV,GES,IMP,VIM,DHA and armA were all negative.Furthermore,drug resistant genes of strains isolated from different sites of one patient on different time could be different.CONCLUSIONS Drug resistant genes of CARB and aac(6′)-Ⅱprevail in P.aeruginosa isolated from burned patients.Detections of drug resistant genes in P.aeruginosa isolated,especially continuously isolated from burned patients are essential.

Objective To investigate the prevalence of mobile genetic elements in Acinetobacter baumannii strains isolated from burn patients. Methods Polymerase chain reaction (PCR) was used to detect the genes encoding the integron, transposon, conjugative plasmid and insertion sequence in 20 strains of Acinetobacter baumannii isolated from burn patients. Results tnpU and ISaba1 genes were detected in all 20 strains, and int Ⅰ gene was detected in 19 strains (95.0%). Other genes were all negative. Conclusion Mobile genetic elements carrying multi-drug resistant genes are found in Acinctobacter baumannii strains isolated from bum patients.

Pregnant women are a group of people in a special period, once sudden cardiac arrest (CA) occurs, it will threaten the life of both mother and child. It has become a great challenge for hospital, doctors and nurses to minimize maternal mortality during pregnancy. All the efforts should ensure the safety of both mother and child throughout the perinatal period. Because difference of the cardiopulmonary resuscitation strategies for common CA patients of the same age, the resuscitation strategies for CA patients during pregnancy need consider the patient's gestational age and fetal condition. Different resuscitation techniques, such as manual left uterine displacement (MLUD), will involve perimortem cesarean delivery (PMCD). At the same time, drugs should be reasonably used for different causes of CA during pregnancy, such as hypoxemia, hypovolemia, hyperkalemia or hypokalemia and other electrolyte disorders and hypothermia in 4Hs, as well as thrombosis, pericardial tamponade, tension pneumothorax and toxicosis in 4Ts. In view of the fact that many causes of CA in pregnancy are preventable, it is more necessary to introduce guidelines for CA in pregnancy in line with our national conditions for clinical guidance. This paper systematically reviewed the pathophysiological characteristics of CA during pregnancy, the high-risk factors of CA during pregnancy, and identified the correct resuscitation methods and prevention and treatment strategies of CA during pregnancy.