Objective To explore the variation of E-index and M-index of rabbits with acute pulmonary embolism (APE) under the status of pulmonary hypertension (PHT). Methods Rabbit models of APE with PHT were established. A series of parameters [including peak early diastolic mitral inflow velocity (EM), peak late diastolic mitral inflow velocity (AM) and so on] were obtained with routine echocardiography and tissue Doppler imaging (TDI);and then E-index, M-index were calculated. The parameters before and after APE were compared. Results Twenty-three rabbit models with APE were successfully established, but 3 with atrial fibrillation were excluded. After APE, pulmonary artery pressure increased significantly, EM decreased observably, whereas right ventricular myocardial performance index (RVMPI) increased more evidently than left ventricular myocardial performance index (LVMPI) (P<0.01) did and E-index decreased and M-index increased remarkably. Conclusion Changes of E-index and M-index may provide reference for quantitative assessment of early APE.

Objective To assess the value of two-dimensional speckle tracking echocardiography (2D-STE) of predicting the acute response to cardiac resynchronization therapy (CRT) in patients with congestive heart failure. Methods Twenty-four patients with congestive heart failure scheduled for CRT were included. 2D-STE was performed within 7 days of implantation with device ON and OFF. Left ventricular (LV) dyssynchrony was defined as an interval ≥130 ms for the absolute difference in time to peak radial strain for the anteroseptal wall versus the posterior wall (T_(AS-POST)) with 2D-STE. Acute hemodynamic response was measured as LVdp/dt, and percentage change in LVdp/dt was used to classify responders (Δdp/dt%＞25%) and nonresponders (Δdp/dt%≤25%). Results Fifteen patients (62.50%) were classified as acute responders. Compared with nonresponders, the responders demonstrated significant increase of LV ejection fraction and reduction of TAS-POST after CRT-ON. T_(AS-POST)was the only determinants of Δdp/dt%＞25%. T_(AS-POST)≥130 ms prognosticated acute response to CRT with sensitivity of 86.24% and specificity of 70.38%. Conclusion CRT can immediately increase the LV systolic function and synchrony. 2D-STE is highly predictive for acute response to CRT.

Objective To evaluate large field diffusion-weighted imaging (DWI) in detection of bone metastases of malignant tumors. Methods Eighteen patients with various malignant tumors were enrolled in this study. All the patients underwent large field DWI and 99mTc-MDP bone scintigraphy within one month. Results Fifteen of 18 patients were diagnosed as bone metastases with conventional MRI; 7 of them were found more than 10 bone metastases, and 23 bone metastases were confirmed in the other 8 patients. When seven patients with multiple bone metastases (>10) were excluded, and lesions in the residual 11 patients with or without bone metastases were counted, the diagnostic sensitivity of bone metastases with large field DWI and bone scintigraphy was both 100%, and specificity were 100% and 33.33%, respectively. ROC study showed the area under curve (AUC) of large field DWI and bone scintigraphy were 1.00 and 0.67, respectively (P=0.04). With lesion numbers as study unit, the diagnostic sensitivity of large field DWI and bone scintigraphy were 86.96% and 78.26%, and the specificity was both 60.00%. ROC study showed the AUC of large field DWI and bone scintigraphy was 0.74, 0.69, respectively; and no statistical difference was found. Conclusion Large field DWI can be used in screening the bone metastases of malignant tumors.

Objective To investigate the current status of nurses′ work performance and job involvement, and to analyze the impact of nurses′job involvement on work performance. Methods Self-made questionnaires were used to investigate 309 nurses in a 3A military hospital in Beijing. The military hospital is in a high standardization level, which may be properly representative of both military hospitals and 3A hospitals. Results The total score of nurses′work performance was 192.04 ± 31.25. The total score of nurses′ job involvement was 55.48 ± 9.94. The multiple regression analysis showed that the nurses′ work performance would be influenced by staff type, vigor and absorption. Conclusions The nurses′work performance and job involvement were at a high level. Managers should take methods to keep a high level of nurses′job involvement, which may improve work performance.

Objective To investigate the influence of zoledronic acid injection on body temperature of patients with primary osteoporosis.Methods A total of 142 patients with primary osteoporosis who received intravenous zoledronic acid treatment in Peking university people's hospital during 2013-2014 were enrolled in this study.The body temperature before and after intravenous zoledronic acid treatment were recorded and analyzed with SPSS 17.0 software.Results The patients'body temperature at different time points after intravenous zoledronic acid treatment was significantly different (P =0.000).Prophylactic use of NSAIDs could significantly reduce patients' body temperature at the second day after intravenous zoledronic acid.Conclusion NSAIDs can be given orally on the same day of intravenous injection of zoledronic acid,and continued for three days.

Objective To investigate the effect of surround needling at articular six meridians plus finger (toe) tip bloodletting therapy on sciatic nerve conduction velocity and lower limb microcirculatory flow in diabetic rats. Method The model was made with streptozotocin. The rats were allocated to model, methycobal, acupuncture and normal groups. The methycobal group received a muscular injection of 50 ?g/kg in the left and right lower limbs alternately, every other day. The acupuncture group received acupuncture at points Taixi(KI3), Kunlun(BL60) and Jiexi(ST41), once daily plus toe tip bloodletting. The normal and model groups were bound 30 min once every other day. Every group was treated for eight weeks. General condition was observed, and sciatic nerve conduction velocity and lower limb microcirculatory flow were measured in the rats before and after treatment. Result Compared with the normal group, sciatic nerve conduction velocity decreased in the other groups of rats (P<0.01). Compared with the model group, sciatic nerve conduction velocity was higher in every treatment group of rats (P<0.05). Conclusion Surround needling at articular six meridians plus finger (toe) tip bloodletting therapy can increase sciatic nerve conduction velocity and improve lower limb microcirculation.

Objective To evaluate the effect of three different choices of indwelling urethral catheter clamping. Indwelling urethral catheter clamping choices included according to patients′complaints to clamp the catheter (Group A), released as schedule (Group B),and smooth passway of indwelling urinary catheter all the way (Group C). Methods We searched RCT about the effect of different choices of indwelling urethral catheter clamping from CNKI, VIP database,Wanfang database, PubMed on line. Literatures were searched from the database had been established till now. Two reviewers evaluate the literatures independently according to the RCT authentic assessment manual of Cochrane Collaboration. Other than different results, negotiation took as the measure to attach an agreement. No agreement reached, consult the opinion of the third person. RevMan5.2 was used to analyses the result of the study. Results Statistical difference between three clamping choice on the rate of successful in autonomous urination after catheter removed: both group A and group B preceded group C (Z=2.97, Z=4.34, P < 0.05), mean well group A preceded group B (Z=5.30, P < 0.05). Statistical difference did not found on the rate of urinary tract irritation after catheter removed between three choices. Conclusion Clamping indwelling urethral catheter according to patients′ complaints seems useful in bladder reconditioning before indwelling urethral catheter removal.

Objective To evaluate patient outcomes of sustained low flow oxygen inhalation therapy with humidifying and non-humidifying oxygen.Methods Randomized controlled trial (RCT) about sustained low flow oxygen therapy with humidifying and non-humidifying oxygen were searched from China National Knowledge Infrastructure (CNKI),Wanfang database,VIP database,PubMed on line.Literatures were searched from the database had been established till now.The primary outcome of the rate of unpleasant respiratory symptoms,oxygen humidification cylinder pollution as well as secondary lower respiratory tract infections were attached importance to.Two reviewers evaluated the literatures independently according to the RCT authentic assessment manual of Cochrane Collaboration.Negotiation took as the measure to attach an agreement.RevMan 5.2 was used to analyses the result of the study.Results A total of 15 met the inclusion criteria,Meta-analysis showed that humidifying and non-humidifying oxygen was not statistically significant with the rate of unpleasant respiratory symptoms (P ＞ 0.05).Non-humidifying group was better than humidity group at the rate of oxygen humidification cylinder pollution and the secondary lower respiratory symptoms (Z=2.50,2.44,P ＜ 0.05).Conclusions Low flow nasal oxygen inhalation therapy may not have to use humidifying oxygen.