4.6 Article

Analysis of risk factors for central venous port failure in cancer patients

Journal

WORLD JOURNAL OF GASTROENTEROLOGY
Volume 15, Issue 37, Pages 4709-4714

Publisher

BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.15.4709

Keywords

Central venous port; Chemotherapy; Risk factor; Cancer patient; Multivariate analysis

Ask authors/readers for more resources

AIM: To analyze the risk factors for central port failure in cancer patients administered chemotherapy, using univariate and multivariate analyses. METHODS: A total of 1348 totally implantable venous access devices (TIVADs) were implanted into 1280 cancer patients in this cohort study. A Cox proportional hazard model was applied to analyze risk factors for failure of TIVADs. Log-rank test was used to compare actuarial survival rates. Infection, thrombosis, and surgical complication rates (chi(2) test or Fisher's exact test) were compared in relation to the risk factors. RESULTS: Increasing age, male gender and open-ended catheter use were significant risk factors reducing survival of TIVADs as determined by univariate and multivariate analyses. Hematogenous malignancy decreased the survival time of TIVADs; this reduction was not statistically significant by univariate analysis [hazard ratio (HR) = 1.336, 95% CI: 0.966-1.849, P = 0.080)]. However, it became a significant risk factor by multivariate analysis (HR = 1.499, 95% CI: 1.079-2.083, P = 0.016) when correlated with variables of age, sex and catheter type. Close-ended (Groshong) catheters had a lower thrombosis rate than open-ended catheters (2.5% vs 5%, P = 0.015). Hematogenous malignancy had higher infection rates than solid malignancy (10.5% vs 2.5%, P < 0.001). CONCLUSION: Increasing age, male gender, open-ended catheters and hematogenous malignancy were risk factors for TIVAD failure. Close-ended catheters had lower thrombosis rates and hematogenous malignancy had higher infection rates. (C) 2009 The WIG Press and Baishideng. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Environmental Sciences

Adsorption and Hydrolysis Characteristics of Antibiotics in the Hyporheic Zone of Zaohe-Weihe River, China

Yali Xie, Shengke Yang, Zongzhou Wang, Ruixin Hu, Siqi Shen, Dan Zhang, Mengya Luo, Wenke Wang

Summary: This study explored the adsorption and hydrolysis characteristics of antibiotics in different environments by simulating the hyporheic zone. The results showed that the adsorption capacity and hydrolysis rate of antibiotics were influenced by the environmental conditions, and there were differences between surface water and groundwater.

POLISH JOURNAL OF ENVIRONMENTAL STUDIES (2022)

Article Biochemistry & Molecular Biology

Evaluation of clinical relevance and underlying pathology for hemodynamic compromise in acute small subcortical infarction using MRI-based neuroimaging markers

Yi-Ting Pan, Yuan-Hsiung Tsai, Jiann-Der Lee, Hsu-Huei Weng, Jen-Tsung Yang, Yen-Chu Huang

Summary: This study aimed to evaluate the clinical relevance and underlying pathology of hemodynamic compromise in acute small subcortical infarction (SSI) using MRI-based neuroimaging markers. The results showed that hemodynamic compromise was highly related to early neurological deterioration (END), basal ganglia EPVS, and branch atheromatous disease.

BIOMEDICAL JOURNAL (2023)

Article Biodiversity Conservation

Temporal effect of phytoremediation on the bacterial community in petroleum-contaminated soil

Yuanyuan Shen, Yu Ji, Wenke Wang, Tianpeng Gao, Haijuan Li, Mingyan Xiao

Summary: This study investigated the effects of Ryegrass on bacterial community and diversity in petroleum contaminated soil. High-throughput sequencing technology was used to compare the bacterial communities in 14 groups samples at different repair stages. The study found that different responses were observed to promote or inhibit microbial reproduction, and the repair time has a vital effect on microbial community changes.

HUMAN AND ECOLOGICAL RISK ASSESSMENT (2023)

Article Materials Science, Multidisciplinary

Effect of Tension Temperature on the Anisotropy of Tensile Behavior for Az31 Alloys: A Visco-Plastic Self-Consistent Analysis

Wenke Wang, Jaimyun Jung, Chao Cui, Wenzhen Chen, Yang Yu, Peng Li, Wencong Zhang, Renlong Xiong, Hyoung Seop Kim

Summary: This work investigated the anisotropy variation of tensile flow stress for AZ31 magnesium alloys at different temperatures and tensile strains using the visco-plastic self-consistent model. The results showed that the anisotropy of flow stress weakened with increasing temperature and exhibited a slightly increasing stage followed by a continuously decreasing stage with increasing strain. Activation of basal slip and tension twinning contributed to the development of a (0002)//LD type texture during tension deformation, while activation of prismatic slip produced a < 10-10 >//LD type texture. The study found that the macroscopic average resolved shear stress decreased significantly with increasing temperature or strain, resulting in the decline of the tension deformation behavior anisotropy.

METALS AND MATERIALS INTERNATIONAL (2023)

Article Materials Science, Multidisciplinary

Comparison Study between Surface Bending and Base Bending in the Bending Strength and the Microstructure Variation for FSWed ZM6 Sheet

Wenzhen Chen, Manman Yuan, Wenke Wang, Jun Yu, Wencong Zhang, Tianyue Teng

Summary: In this study, the effects of surface bending and base bending on the bending strength and microstructure variation of friction stir welded ZM6 magnesium alloy sheet are compared. The results show that different bending methods produce different microstructure variations, resulting in changes in yield strength.

ADVANCED ENGINEERING MATERIALS (2023)

Article Metallurgy & Metallurgical Engineering

Evolution of microstructure and mechanical properties of ZK60 magnesium alloy processed by asymmetric lowered-temperature rolling

Wen-cong Zhang, Xin-tong Liu, Jun-fei Ma, Wen-ke Wang, Wen-zhen Chen, Yu-xuan Liu, Jian-lei Yang

Summary: Asymmetric lowered-temperature rolling was used to fabricate fine-grained ZK60 magnesium alloy sheet with weak basal texture. The results showed that multi-pass loweredtemperature rolling could improve microstructure homogeneity and refine the grain size. During the rolling process, a fiber texture along the transverse direction gradually developed. The shear deformation along the rolling direction weakened the basal texture along this direction, resulting in a decrease in yield strength.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2022)

Article Ecology

Temporal dynamic of antibiotic resistance genes in the Zaohe-Weihe hyporheic zone: driven by oxygen and bacterial community

Ruyi Feng, Lei Duan, Siqi Shen, Yan Cheng, Yanhua Wang, Wenke Wang, Shengke Yang

Summary: The widespread spread of antibiotic resistance genes (ARGs) in the hyporheic zone (HZ) is a growing environmental problem. This research investigates the effects of oxygen changes, temperature, and salinity on the abundance of ARGs in the HZ. It also analyzes the bacterial community composition of sediment samples and their relationship with ARGs. The study reveals that changes in bacterial communities, oxygen conditions, and horizontal gene transfer (HGT) of mobile genetic elements (MGEs) play significant roles in the spread of ARGs.

ECOTOXICOLOGY (2023)

Article Chemistry, Physical

Effects of asymmetric basal texture on the stretchability and the microstructure variations for the rolled ZK60 magnesium alloy sheet

Wenke Wang, Xinhua Liu, Zhihao Wang, Miaomiao Chen, Wenzhen Chen, Wencong Zhang, Hyoung Seop Kim

Summary: This study investigates the effects of asymmetric basal texture on the stretchability and microstructure variations of magnesium alloy sheet. The results show that plastic deformation is concentrated in the central region of the sample during stretch forming, and the transverse direction sample has higher stretch formability. This is attributed to the weak basal texture in the transverse direction sample, which activates more basal slip and tension twinning. Additionally, the activation of basal slip narrows the spread angle of the basal pole for the transverse direction sample, while only increasing the basal texture intensity for the rolling direction sample.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Article Engineering, Civil

Factors Affecting Unmanned Aerial Vehicles' Unsafe Behaviors and Influence Mechanism Based on Social Network Theory

Wenke Wang, Xinlin Guo, Yang Liu, Aomei Tang, Qin Yang

Summary: This study constructed a conceptual model of unsafe behaviors in UAV flight based on the Swiss cheese model and investigated the influence mechanism of these behaviors using social network analysis. The findings showed that unreasonable safety management structure and weak supervision were major factors contributing to unsafe UAV flight. It is recommended to eliminate critical unsafe behaviors in UAV supervision to improve flight safety.

TRANSPORTATION RESEARCH RECORD (2023)

Article Chemistry, Physical

Mechanisms of Growth and Hydrogen Permeation of Zirconium Nitride Film on Zirconium Hydride

Wenke Wang, Guoqing Yan, Zhaohui Ma, Jiandong Zhang, Lijun Wang, Zhancheng Guo

Summary: In this study, nitride films were successfully prepared as hydrogen permeation barriers on zirconium hydride. The growth of the film was mainly influenced by temperature, followed by the reaction atmosphere and holding time. Hydrogen was found to increase the diffusivity of nitrogen during film formation. The chemical composition of the film mainly consisted of Zr and N, with minor amounts of O. The film exhibited superior hydrogen permeation resistance compared to previously reported ZrO2 films. The hydrogen permeation resistance was attributed to chemical capture of hydrogen, physical barrier of the dense film, and different nitrogen diffusion coefficients at different temperatures.

MATERIALS (2023)

Article Nanoscience & Nanotechnology

High strength and plasticity TiBw/TA15 composites with a novel columnar network structure

Yangju Feng, Yunbin Lu, Xuesong Liu, Hongyang Cao, Wenke Wang, Jianlei Yang, Wenzhen Chen, Guorong Cui

Summary: In this paper, a novel columnar network structure reinforced TiBw/TA15 composites with excellent strength and high plasticity have been designed and prepared. The study showed that the columnar network structure effectively strengthened the grain boundary of the high temperature beta phase, enhancing the strength of the composites. The presence of TiBw hindered the movement of dislocations and provided a favorable condition for dynamic recrystallization of the matrix, leading to decreased dislocation density, refined grains, and improved plasticity. As a result, an effective combination of strength and plasticity was achieved in the composites.

SCRIPTA MATERIALIA (2023)

Article Environmental Sciences

MCPT: Mixed Convolutional Parallel Transformer for Polarimetric SAR Image Classification

Wenke Wang, Jianlong Wang, Bibo Lu, Boyuan Liu, Yake Zhang, Chunyang Wang

Summary: A mixed convolutional parallel transformer (MCPT) model based on Vision transformers (ViT) is proposed for fast PolSAR image classification. The method introduces mixed depthwise convolution tokenization to reduce computational and parameter complexity and extract features of different receptive fields. It implements a parallel encoder by pairing the same modules and decreases the network depth and computing power requirement. Experimental results show significant improvement in training and prediction speed, with overall accuracy of 97.9% and 96.77% achieved on AIRSAR Flevoland and RADARSAT-2 San Francisco datasets, respectively.

REMOTE SENSING (2023)

Article Materials Science, Multidisciplinary

Adjusting approaches of basal texture for improvement of tension-compression asymmetry in extruded magnesium alloys

Wenzhen Chen, Wenjie Wu, Wenke Wang, Wencong Zhang, Xinhua Liu, Hyoung Seop Kim

Summary: Texture adjusting approaches were proposed to improve tension-compression asymmetry in magnesium alloys. The dominant deformation mechanism during yielding was quantified based on Sachs assumption and primarily manifested as twinning inhibition and transition between twinning and slip. The impacts on yield strength and asymmetry were estimated by modified Hall-Petch relationship. Slight texture adjustments, particularly of basal texture divergence, can significantly improve strength asymmetry while avoiding severe strength loss, illustrating the importance and potential of texture adjustment in engineering.

MATERIALS RESEARCH LETTERS (2023)

Article Water Resources

Thermodynamic transport mechanism of water freezing-thawing in the vadose zone in the alpine meadow of the Tibet Plateau

Gang Qiao, Feng-dan Yu, Wen-ke Wang, Jun Zhang, Hua-qing Chen

Summary: In this study, the temporal and spatial variation of heat budget and thermodynamic transmission process of the vadose zone in high and cold regions were analyzed by studying the moisture content of the vadose zone in alpine regions. The results showed a positive correlation between air temperature, ground temperature, and water content of the vadose zone. The thermodynamic transfer process of the vadose zone was divided into four stages based on the change law of geothermal gradient. This research provides valuable insights for understanding evapotranspiration and protecting the ecological and geological environment in high and cold regions.

JOURNAL OF GROUNDWATER SCIENCE AND ENGINEERING (2022)

Article Engineering, Electrical & Electronic

Floating Gate Carbon Nanotube Dual-Gate Field-Effect Transistor for Reconfigurable AND/OR Logic Gates

Xueyuan Liu, Bing Sun, Xiao Li, Zhen Zhang, Wenke Wang, Xin'gang Zhang, Zhi Huang, Huaping Liu, Hudong Chang, Rui Jia, Honggang Liu

Summary: Carbon nanotubes (CNTs) have great potential in the field of electronic hardware as a replacement for silicon devices. By combining CNTs as channel material and TiN floating gate, the device state and logic computing can be flexibly controlled. The combination of logic and memory properties will be applied in areas such as in-memory computing and field-programmable gate arrays.

ACS APPLIED ELECTRONIC MATERIALS (2022)

No Data Available