1.Clinical characters and the results of treating fast heart rhythm disorders
Journal of Practical Medicine 2005;0(6):86-87
A study was performed on 82 cases, among which, 50% with fast heart rhythm disorders at Quang An Hospital. Results: The most common risk factors included: exhausted or moved activities. Fast heart rhythm disorders were more common in patients with hypertension and heart valvular disease. Common symptoms included: headache, dyspnea. More severe symptoms: unconsciousness, convulsion, enuresis, systolic blood pressures < 90 mmHg. There were 13.41% of cases could not cut off fast heart rhythm disorder, left the hospital within 24 hours with death prognosis.
Arrhythmias, Cardiac
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Diagnosis
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Therapeutics
2.Investigation of dose verification of esophageal carcinoma intensity modulated radiotherapy
Dan LIU ; Zifeng CHI ; Wei ZHANG ; Lan WANG ; Chun HAN
Chinese Journal of Radiation Oncology 2011;20(1):64-68
Objective To compare the results of three dose verification solutions of esophageal carcinoma IMRT plans. Methods Seven esophageal carcinoma cases were planned with Pinnacle 8.0 h.The MATRIXX and Delta4 were chosen as the two-dimensional dosimetry and three-dimensional dosimetry.IMRT plans and Delta4 phantom plans were also recalculated by Monte Carlo. Gamma values were evaluated for MATRIXX and Delta4 with 3 mm/3% gamma criteria. For the comparison of Pinnacle, Delta4 and Monte gamma maps, the dose distribution in central plane, dose profiles and dose-volume histograms were used to evaluate the agreement. Results The gamma maps comparison show that with 3 mm/3% gamma criteria an over 98% pass ratio was obtained by MATRIXX measurement. A 94. 4% gamma pass ratio whicl.contains 4 fields gamma pass ratio lower than 90%, was obtained by Delta4 measurement. A 97.6% and 99. 8% gamma pass ratio was obtained between the Delta4 measurement and Monte Carlo simulation with 2 mm/2% and 3 mm/3% gamma criteria. The dose distribution in central plane and dose profiles from Pinnacle calculation were almost in agreement with both the Monte Carlo simulation and Delta4 measurement. The DVH plot have slightly differences between Pinnacle and Delta4 measurement as well as Pinnacle and Monte Carlo simulation, but have excellent agreement between Delta4 measurement and Monte Carlo simulation. Conclusions It was shown that all the three methods can be used very efficiently to verify esophageal carcinoma IMRT delivery, Delta4 and Monte Carlo simulation no data missed. The primary advantage of Delta4 is the fact it can measure true 3D dosimetry while Monte Carlo can simulate in patients CT images but not in phantom.
3.Comparison of infrared mrker-based positioning system and electronic portal imaging device for the measurement of setup errors
Yankun CAO ; Chao GAO ; Lan WANG ; Zifeng CHI ; Chun HAN
Chinese Journal of Radiation Oncology 2011;20(5):414-416
ObjectiveTo measure the setup errors with infrared marker-based positioning system (IM-BPS) and electronic portal imaging device (EPID) for patients with esophageal carcinoma and lung cancer and investigate the accuracy and practicality of IM-BPS. MethodsFrom January 2007 to January 2008, 40 patients with esophageal carcinoma and 27 patients with lung cancer received three-dimensional conformal radiotherapy or intensity-modulated radiotherapy, setup errors during the treatment were measured with IM-BPS and EPID, and the data of setup errors were compared with paired t-test and agreement with x2-test. ResultsIt takes 10 - 12 mins to complete the validating for each patient by EPID) system, while IMBPS system only needs 2 -5 mins. The mean setup errors along x, y and z-axis for patients with esophageal carcinoma measured by IM-BPS and EPID were 3.49 mm, 3. 19 mm, 3.31 mm and 4. 03 mm, 3.41 mm, 3.43 mm, respectively. For the patients with lung cancer, the setup errors were 4. 23 mm, 3.51 mm, 3. 39mm and 4. 85 mm, 3. 53 mm, 3.74 mm, respectively. The difference of setup errors meanured by the two systems was within 1 mm for 65% esophageal carcinoma patients ( x2 =51.09, P =0. 000), and 55% lung cancer patients ( x2 =53. 35, P =0. 000).Conclusions The measurement results of setup errors for patients with esophageal carcinoma and lung cancer show that IM-BPS is mostly better than EPID. Though validating for patients can be measured accurately and be well quality controlled, IM-BPS is used easily because of macroscopic, homely,spare time and real-time monitoring.
4.Effect of travoprost on nuclear factor kappa B expression in human ciliary muscle cells
Jianhui XIAO ; Yuqing LAN ; Chi ZHANG ; Zhaoxia XIA ; Wei PENG
Chinese Journal of Tissue Engineering Research 2008;12(37):7394-7397
BACKGROUND: Nuclear factor kappa B (NF-κB) is possibly related to regulation of various cell signals that are derived from aqueous uveoscleral outflow pathway.OBJECTIVE: To explore effect of travoprost on the expression of NF-κB and inhibitor-κB (I-κB) in human ciliary muscle cells cultured in vitro. DESIGN, TIME AND SETTING: A contrast study, which was performed in the Laboratory of Zhongshan Ophthalmology Center from March 2005 to November 2006.MATERIALS: Eyeballs were obtained from the youth who died due to other diseases except eye disease no more than one hour. The relatives voluntarily provided the informed consent.METHODS: Travoprost (1 μmol/L) was added in human ciliary muscle cell culture medium, and then the samples were divided into four groups according to culture time, including 0-hour (control group), 6-hour, 12-hour, and 24-hour experimental groups. MAIN OUTCOME MEASURES: Expression of mRNA and protein of NF-κB p65 and I-κBα in the four groups by using real-time RT-PCR, immunofluorescence relative quantitative analysis and enzyme linked immunosorbent assay (ELISA) techniques. RESULTS: As compared to control group, mRNA expression of NF-κB p65 in the 6-hour, 12-hour, and 24-hour experimental groups was decreased (F=17.068, P=0.001); while mRNA expression of I-κBα was not changed remarkably in the 6-hour and 12-hour experimental groups (P > 0.05), but the expression was significantly higher than that in the 24-hour experimental group (F=32.742, P=0.000). Immunofluorescence relative quantitative analysis showed that the fluorescence intensity of NF-κB p65 in the 6-hour, 12-hour, and 24-hour experimental groups were weaker than that in the 0-hour control group (F=17.216, P=0.000); additionally, as compared to 0-hour control group, fluorescence intensity of I-κBα in the 6-hour experimental group was not changed remarkably (P=0.134), that in the 12-hour experimental group was weakened (P=0.032), and that in the 24-hour experimental group was strengthened (F=17.346, P=0.001). ELISA revealed that expression of phosphorylated NF-κB p65 was decreased gradually by the time of being induced by travoprost (F=15.4, P=0.001). CONCLUSION: Travoprost can down-regulate mRNA expression of NF-κB p65, inhibit nuclear translocation, and up-regulate mRNA expression of I-κBα in human ciliary muscle cells.
5.Study on Pharmacokinetics and Bioavailability of Two Products of Valaciclovir Tablet
Dongmei YE ; Shun LAN ; Pancai CHI ; Guoshen WANG
China Pharmacy 2001;0(10):-
0 05) CONCLUSION:The two products of valaciclovir tablet are bioequivalent
6.A novel rabies vaccine based on the chimpanzee adenoviral vector AdC68
Rui ZHU ; Yudan CHI ; Fei DENG ; Ke LAN ; Dongming ZHOU
Chinese Journal of Microbiology and Immunology 2016;36(6):442-447
Objective To investigate the genetic stability, immunogenicity and protective efficacy of AdC68-rab. gp, a novel rabies vaccine based on the replication-defective chimpanzee adenoviral vector AdC68-ept. Methods The recombinant adenovirus AdC68-rab. gp expressing the glycoprotein of rabies vi-rus ERA strain was constructed. Genomes of the AdC68-rab. gp of different generations were extracted and analyzed. HEK293 and Huh7 cells were infected with the AdC68-rab. gp of different generations. ICR mice were immunized with the AdC68-rab. gp and blood samples were collected 4 weeks or 6 months after immuni-zation. Rapid fluorescent focus inhibition test ( RFFIT) was performed to detect the neutralizing antibody against rabies virus in mice serum samples. ICR mice were challenged with lethal dose of rabies virus 4 weeks after the immunization with AdC68-rab. gp to evaluate the protective efficacy of AdC68-rab. gp. Re-sults The genome of AdC68-rab. gp was stable after 15 passages, which was identical to that of the 5th and 1st generations. High levels of neutralizing antibody against rabies virus in serum samples were detected in mice immunized with AdC68-rab. gp and maintained for a long period of time. Immunization mice with one dose of AdC68-rab. gp could protect all mice from the lethal dose challenge of rabies virus. Conclusion The novel AdC68-rab. gp was characterized by good genetic stability and ideal protective effi-cacy. The adenoviral vector based vaccine could be further developed as a potential candidate for the substi-tute of current rabies vaccine.
7.Factors Affecting Invasive Management after Unplanned Extubation in an Intensive Care Unit.
A Lan LEE ; Chi Ryang CHUNG ; Jeong Hoon YANG ; Kyeongman JEON ; Chi Min PARK ; Gee Young SUH
Korean Journal of Critical Care Medicine 2015;30(3):164-170
BACKGROUND: Unplanned extubation (UE) of patients requiring mechanical ventilation in an intensive care unit (ICU) is associated with poor outcomes for patients and organizations. This study was conducted to assess the clinical features of patients who experienced UE and to determine the risk factors affecting reintubation after UE in an ICU. METHODS: Among all adult patients admitted to the ICU in our institution who required mechanical ventilation between January 2011 and December 2013, those in whom UE was noted were included in the study. Data were categorized according to noninvasive or invasive management after UE. RESULTS: The rate of UE was 0.78% (the number of UEs per 100 days of mechanical ventilation). The incidence of self-extubation was 97.2%, while extubation was accidental in the remaining patients. Two cases of cardiac arrest combined with respiratory arrest after UE were noted. Of the 214 incidents, 54.7% required invasive management after UE. Long duration of mechanical ventilation (odds ratio [OR] 1.52; 95% confidence interval [CI] 1.32-1.75; p = 0.000) and high ICU mortality (OR 4.39; 95% CI 1.33-14.50; p = 0.015) showed the most significant association with invasive management after UE. In multivariate analysis, younger age (OR 0.96; 95% CI 0.93-0.99; p = 0.005), medical patients (OR 4.36; 95% CI 1.95-9.75; p = 0.000), use of sedative medication (OR 4.95; 95% CI 1.97-12.41; p = 0.001), large amount of secretion (OR 2.66; 95% CI 1.01-7.02; p = 0.049), and low PaO2/FiO2 ratio (OR 0.99; 95% CI 0.98-0.99; p = 0.000) were independent risk factors of invasive management after UE. CONCLUSIONS: To prevent unfavorable clinical outcomes, close attention and proper ventilatory support are required for patients with risk factors who require invasive management after UE.
Adult
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Heart Arrest
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Humans
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Incidence
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Intensive Care Units*
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Critical Care*
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Mortality
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Multivariate Analysis
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Respiration, Artificial
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Risk Factors
8.Effect of travoprost on matrix metalloproteinase-2 expression in human ciliary muscle cells cultured in vitro
Yuqing LAN ; Jianhui XIAO ; Wei PENG ; Chi ZHANG ; Hui GUO ; Xin SONG
Chinese Journal of Tissue Engineering Research 2007;11(41):8414-8417
BACKGROUND:Travoprost can increase human ciliary muscle cell interspace, decrease uveoscleral outflow resistance and then decrease intraocular pressure. But whether this action pathway is conducted by enhancing the expression of matrix metalloproteinase (MMP) in the ciliary muscle cells remains unclear.OBJECTIVE:To observe the effect of travoprost on the expression of MMP-2 in the human ciliary muscle cells.DESIGN:Controlled observation analysis.SETTING:Zhongshan Ophthalmic Center,Sun Yat-sen University.MATERIALS:This study was Carried out in the Zhongshan Ophthalmic Center,Sun Yat-sen University between August 2005 and April 2006.Donor was from the unilateral eyeball of a youth patient,who was dead within one hour,had no any disease (informed consent was obtained from the relatives) in the Zhongshan Ophthalmic Center, Sun Yat-sen University.Rabbit anti.human MMP-2 polyclonal antibody (Boster Bioengineering Co.,Ltd,Wuhan),and travoprost (86610F,0.004% solution,ALCON company.USA) were used in this study.METHODS: Experimental intervention: 1μmol/L travoprost was added into bovine serum-free medium of human ciliary muscle cell, serving as experimental group,and meanwhile,the cells which were not interfered by drugs were taken as control group.In the experimental group,cells were harvested 6, 12,and 24 hours after travoprost being added.Experimental evaluation:MMP-2 gene and protein expressions in the human ciliary muscle cells in each group were detected by RT-PCR and ELISA methods.The activity of MMP-2 in each group was detected by Zymography technique.MAIN OUTCOME MEASURES:MMP-2 mRNA expression in the human ciliary muscle cell,MMP-2 protein expression and MMP-2 activity in the extracellular fluid.RESULTS:①In the experimental group, at 6,12 and 24 hours after travoprost being added,the relative expression of MMP-2 mRNA was gradually increased (F=236.959,P<0.01).②In the experimental group,at 6,12 and 24 hours after travoprost being added,MMP-2 protein was also gradually increased with time (F=38.110,P<0.01).③Zymography technique detection showed that in the experimental group,at 6,12 and 24 hours after travoprost adding,MMP-2 activity was gradually enhanced with time (F=74.348,P<0.01).CONCLUSION:After human ciliary muscle cell cultured in vitro being subjected to the intervention of travoprost.MMP-2 expression is gradually increased with action time of travoprost, and meanwhile MMP-2 activity is also gradually enhanced.
9.Impact of setup errors on dose distribution of three dimensional conformal radiotherapy for patients with esophageal carcinoma
Chao GAO ; Lan WANG ; Zifeng CHI ; Chun HAN ; Jun WANG ; Xin ZHANG ; Guoxin MA ; Aiqin XIAO
Chinese Journal of Radiation Oncology 2009;18(4):270-273
Objective To measure the setup errors of patients with esophageal carcinoma during the treatment of three dimensional conformal radiotherapy (3DCRT), and to analyze the impact of setup errors on dose distribution of GTV,CTV and normal tissues around. Methods Forty-two patients with esophageal cancer treated by 3DCRT were included. The setup errors of each patient were measured once a week for 6 times by electronic portal imaging device (EPID). The setup errors were integrated into the treatment plan-ning system by moving the isocenter. Then the dose distribution of GTV, CTV and normal tissues were recal-culated. Results The systematic setup errors of the 42 patients were - 2.31 mm, - 0.55 mm and - 0.16 mm, and the random errors were 4.42 mm, 4.35 mm and 4.48 mm in the directions of lef-fight, anterior-posterior,and superior-inferior, respectively. The dose covered 95% GTV( D95 ) was reduced by 32 cGy and by 88 cGy for CTV D95. The lung V20 in the original plan and the integrated plan was 22.49% and 22.02%, respectively. The average dose of the heart in the two plans was 2077.62 cGy and 2036.23 cGy, respectively. In the original plan, no patient had maximum dose of spinal cord over 4500 cGy; While in the intergrated plan there were 18 patients had the spinal cord dose more than 4500 cGy, with a maximum dose of 5503.90 cGy. Conclusions The setup errors cause significant dose reduction of GTV and CTV, but not of the lung and heart . The maximum dose of the spinal cord may exceed 4500 cGy due to the setup errors.
10.Prevalence of High Blood Pressure and its Relationship with Body Weight Factors among Inpatients with Schizophrenia in Taiwan.
Asian Nursing Research 2012;6(1):13-18
PURPOSE: The objective of this study was to document the prevalence of high blood pressure (BP) and to explore its relationship with weight among inpatients with schizophrenia. Additionally, other possible risk factors impacting BP levels in relation to patients' demographic characteristics and use of atypical antipsychotic drugs and medications to reduce blood pressure were analyzed. METHODS: Using medical records, demographic data, and results of physical examination, this crosssectional study investigated the prevalence of hypertension and high BP and its association with body weight among 1,030 inpatients with schizophrenia in a large psychiatric facility in Taiwan. RESULTS: The prevalence of high BP and hypertension were found to be higher among inpatients with schizophrenia in Taiwan in comparison with those of the general population in line with the latest evidence. Hypertensionwas significantly associated with body mass index; meanwhile, other risk factors, including age, gender, length of hospital stay, time since initial schizophrenia diagnosis, medications used to reduce blood pressure, and atypical antipsychotics, were identified. However, body mass index was the most effective predictor of blood pressure in the study. CONCLUSION: The findings of this research shed light on the importance of developing effective weight and blood pressure monitoring and management programs for inpatients with schizophrenia. There is also a need for clinical nurses to employ multiple behavioral intervention strategies to minimize risks of high BP in patients with schizophrenia. We recommend that clinical nurses carefully monitor and control BP among inpatients with schizophrenia.
Antipsychotic Agents
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Blood Pressure
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Blood Pressure Monitors
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Body Mass Index
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Body Weight
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Humans
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Hypertension
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Inpatients
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Length of Stay
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Light
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Medical Records
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Obesity
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Organothiophosphorus Compounds
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Overweight
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Physical Examination
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Prevalence
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Risk Factors
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Schizophrenia
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Taiwan