Objective To evaluate the feasibility and accuracy of real-time three-dimensional transesophageal echocardiography(TEE) in assessment of left atrial appendage(LAA) function. Methods Forty-two atrial fibrillation patients underwent real-time three-dimensional TEE. LAA ejection fraction based on two-dimensional area measurements(EFA-2D), three-dimensional area measurements(EFA-3D) and three-dimensional volume measurements(EFv-3D) were calculated and related to LAA peak empty velocity (PEV). The variability within observer and interobserver were tested. Results EFA-2D was significantly higher than EFA-3D[(62.84 ± 17.27)% vs (45.39 ± 16.58)%, P = 0.000] and EFv-3D [( 62.84 ±17.27) % vs (48.35 ± 19.37) %, P = 0.001 ], whereas EFA-3D and EFv-3D had no significant difference ( P = 0.158). In a simple linear correlation,the degree of association between EFv-3D and PEV was higher as between EFA-3D and PEV ( r = 0.662 vs 0.604,both P ＜0.05). No significant correlation was observed between EFA-2D and PEV ( r = 0.529, P = 0.130). Variabilities within observer and interobserver were no significant differences by the three methods( P ＞0.05). Conclusions LAA ejection fraction calculation by real-time three-dimensional TEE is feasible and more accurate than by 2D TEE.

Objective To explore the relationship between the soil components along the areas of the east route of the South?to?North Water Diversion Project and the survival situation of Oncomelania hupensis snails. Methods Four study sites were se?lected along the project,and soil samples were collected to analyze the components. The amounts of components among the dif?ferent study sites were compared statistically. Results Except zinc,sodium,and phosphorus,the contents of the soil compo?nents where the snails survived were different from those where snails were dead(t=-19.150 to 12.810,all P<0.01). Howev?er,the logistic regression analysis did not obtain a model with statistical significance. Conclusions O. hupensis snails live in the soil with adequate organic matter and neutral pH value. Along with the global warming and the operation of the South?to?North Water Diversion Project,O. hupensis snails may survive in the northern area,and therefore,the surveillance work should be strengthened.

Objective:To explore the application effect of Sihuang Powder application on Yongquan Point in patients undergoing hip and knee replacement.Methods:The convenient sampling method was used to select 172 patients after hip and knee replacement in Yantai Mountain Hospital from October 2021 to August 2022 as the research objects. They were divided into the control group ( n=85) and the experimental group ( n=87) by the random number table method. Patients in the control group were treated with routine nursing intervention, while patients in the experimental group were treated with Sihuang Powder application on Yongquan Point on the basis of control group. The fibrinogen content and D-dimer before and after intervention, the incidence of deep vein thrombosis (DVT) in lower limbs during hospitalization and the length of postoperative hospitalization were compared between the two groups. Results:On the thrid day after operation, fibrinogen content and D-dimer level of the experimental group were lower than those of control group, and the differences were statistically significant ( P< 0.05). The incidence of DVT during hospitalization in the experimental group was 5.75% (5/87), lower than 15.29% (13/85) in the control group, and the difference was statistically significant (P<0.05). The postoperative hospitalization days in the experimental group was shorter than that in the control group, and the difference was statistically significant ( P<0.05) . Conclusions:Applying Sihuang Powder to Yongquan Acupoint can effectively improve blood hypercoagulability, reduce the incidence of lower limb DVT in patients after hip and knee replacement surgery, reduce postoperative complications and effectively shorten the length of hospital stay.

Objective:To analyze the effect of green channel nursing model based on the information intelligent platform on the rescue time and quality of emergency trauma patients.Methods:Using the convenient sampling method, a total of 156 emergency trauma patients admitted to Yantai Mountain Hospital in Yantai City from April to October 2023 were selected as the research objects. The 78 patients admitted from April to July 2023 were set as the control group and they were given the conventional nursing model, while 78 patients admitted from August to October 2023 were set as the observation group and they were given green channel nursing mode based on the information intelligent platform on the basis of the control group. The rescue time and quality of patients were compared between two groups.Results:The establishment time of venous channel, medication application time, completion time of CT examination and stay time in emergency room in the observation group were shorter than those in the control group, and the scores of all dimensions of nursing quality were all higher than those in control group, and the differences were statistically significant ( P<0.01) . Conclusions:The green channel nursing model based on the information intelligent platform can improve the rescue time and nursing quality of emergency trauma patients, which has certain clinical significance.

Objective To compare the effect of pressurized rapid intravenous drip of Shenfu and micro-pumping of dopamine on hypoperfusion in percutaneous coronary intervention (PCI) of acute inferior wall myocardial infarction.Methods A total of 80 patients with acute inferior wall myocardial infarction treated with emergency PCI in Chest Pain Unit of Yantaishan Hospital of Yantai City from May 2014 to May 2015 were enrolled. Then these patients were divided into observation group (n=40,pressurized rapid intravenous drip of normal saline and Shenfu) and control group (n=40,pressurized intravenous drip of normal saline with the same pressure combined with micro-pumping of Dopamine) according to random number table. Blood pressure and heart rate per five minutes were observed and recorded before intravenous drug,five to forty minutes after intravenous drug. Besides,the incidence rates of malignant arrhythmia,vomitting,TIMI grade three flows after intrqvenous drug and major adverse cardiovascular events after 30 days of a follow-up were also observed and recorded.Results Systolic pressure,diastolic pressure and mean arterial pressure of patients between two groups all met and maintained to the expectation after treatment with significant differences between two groups (P<0.05). The incidence rates of malignant arrhythmia,nausea and vomitting in observation group were lower than those in control group with significant differences (P<0.05). There was no statistically significant difference in the proportion of TIMI grade three flows and the incidence of major adverse cardiovascular events after 30 days of a follow-up (P>0.05).Conclusions When the hypoperfusion appears during PCI of acute inferior wall myocardial infarction,the pressurized rapid intravenous drip of Shenfu can improve hypoperfusion which is better than Dopamine in the effects of correcting hypotension and reducing the occurrence of adverse events.