Colorectal cancer(CRC) is the third most common cancer and second leading cause of cancer-related death in the United States. Colonoscopy is widely preferred for CRC screening and is the most commonly used method in t...Colorectal cancer(CRC) is the third most common cancer and second leading cause of cancer-related death in the United States. Colonoscopy is widely preferred for CRC screening and is the most commonly used method in the United States. Adequate bowel preparation is essential for successful colonoscopy CRC screening. However, up to one-quarter of colonoscopies are associated with inadequate bowel preparation, which may result in reduced polyp and adenoma detection rates, unsuccessful screens, and an increased likelihood of repeat procedure. In addition, standardized criteria and assessment scales for bowel preparation quality are lacking. While several bowel preparation quality scales are referred to in the literature, these differ greatly in grading methodology and categorization criteria. Published reliability and validity data are available for five bowel preparation quality assessment scales, which vary in several key attributes. However, clinicians and researchers continue to use a variety of bowel preparation quality measures, including nonvalidated scales, leading to potential confusion and difficulty when comparing quality results among clinicians and across clinical trials. Optimal clinical criteria for bowel preparation quality remain controversial. The use of validated bowel preparation quality scales with stringent but simple scoring criteria would help clarify clinical trial data as well as the performance of colonoscopy in clinical practice related to quality measurements.展开更多
The amorphous boron nitride ceramic powders were prepared at 750-950 ℃ by the low-cost urea route, and the effects of preparation temperatures, molar ratios of the raw materials and oxidation treatment on the composi...The amorphous boron nitride ceramic powders were prepared at 750-950 ℃ by the low-cost urea route, and the effects of preparation temperatures, molar ratios of the raw materials and oxidation treatment on the composition, structure and surface morphology of the products were investigated through FT-IR, XRD and SEM. The results show that the products ceramize and crystallize gradually with the increase of the temperature. When the molar ratio and reaction temperature are 3：2 and 850 ℃, respectively, the products have high purity, compact structure and nice shape. The oxidation treatment at 450 ℃ will not impair the composition and structure of boron nitride but effectively remove the impurities.展开更多
GaN powder of nanometer scale was prepared by metal organic chemical vapor deposition using diethylgallium azide as precursor. The resulting powder was characterized by XRD and TEM. It has been found that the particle...GaN powder of nanometer scale was prepared by metal organic chemical vapor deposition using diethylgallium azide as precursor. The resulting powder was characterized by XRD and TEM. It has been found that the particle size of the powder obtained is affected by the deposition temperature, and the fine crystals formed in temperature range 500 similar to 650 degrees C were hexagonal.展开更多
AIM To compare the efficacy of fixed-time split dose and split dose of an oral sodium picosulfate for bowel preparation.METHODS This is study was prospective, randomized controlled study performed at a single Institut...AIM To compare the efficacy of fixed-time split dose and split dose of an oral sodium picosulfate for bowel preparation.METHODS This is study was prospective, randomized controlled study performed at a single Institution(2013-058). A total of 204 subjects were assigned to receive one of two sodium picosulfate regimens(i.e., fixed-time split or split) prior to colonoscopy. Main outcome measurements were bowel preparation quality and subject tolerability.RESULTS There was no statistical difference between the fixedtime split dose regimen group and the split dose regimen group(Ottawa score mean 2.57 ± 1.91 vs 2.80 ± 2.51, P = 0.457). Cecal intubation time and physician's satisfaction of inspection were not significantly different between the two groups(P = 0.428, P = 0.489). On subgroup analysis, for afternoon procedures, the fixed-time split dose regimen was equally effective as compared with the split dose regimen(Ottawa score mean 2.56 ± 1.78 vs 2.59 ± 2.27, P = 0.932). There was no difference in tolerability or compliance between the two groups. Nausea was 21.2% in the fixed-time split dose group and 14.3% in the split dose group(P = 0.136). Vomiting was 7.1% and 2.9%(P = 0.164), abdominal discomfort 7.1% and 4.8%(P = 0.484), dizziness 1% and 4.8%(P = 0.113), cold sweating 1% and 0%(P = 0.302) and palpitation 0% and 1%(P = 0.330), respectively. Sleep disturbance was two(2%) patients in the fixed-time split dose group and zero(0%) patient in the split dose preparation(P = 0.143) group.CONCLUSION A fixed-time split dose regimen with sodium picosulfate is not inferior to a split dose regimen for bowel preparation and equally effective for afternoon colonoscopy.展开更多
目的基于“真实世界”研究2 L复方聚乙二醇电解质溶液(PEG)在结肠镜检查前肠道准备时的应用效果。方法选取2022年11月至2023年4月在我院消化内镜中心使用2 L PEG方案进行肠道准备的4268例患者,根据波士顿肠道准备量表(BBPS)对总体、各...目的基于“真实世界”研究2 L复方聚乙二醇电解质溶液(PEG)在结肠镜检查前肠道准备时的应用效果。方法选取2022年11月至2023年4月在我院消化内镜中心使用2 L PEG方案进行肠道准备的4268例患者,根据波士顿肠道准备量表(BBPS)对总体、各段结肠的清洗结果进行评分,按照是否合格分为合格组(n=3802)和不合格组(n=466)。比较两组的危险因素、依从性及患者感受等。结果在使用PEG进行肠道准备的4268例检查者中,3802例合格(合格率89.1%),466例不合格(不合格率10.9%)。BBPS总评分为(6.60±1.10)分,右侧结肠评分为(2.05±0.48)分,横结肠评分为(2.45±0.55)分,左侧结肠为(2.10±0.45)分。息肉总体检出率为51.6%(2203/4268)。进行多因素Logistic回归方程分析,结果显示,男性、胃肠道外科手术史、糖尿病史、每周排便<3次均为导致结肠镜检查前肠道准备不合格的危险因素(均OR>1,P<0.05)。结论2 L PEG方案能够基本满足中国人结肠镜检查肠道准备的需求,对于男性、胃肠道外科手术史、糖尿病史、每周排便<3次的检查者需要进行更严格的肠道准备方式。展开更多
文摘Colorectal cancer(CRC) is the third most common cancer and second leading cause of cancer-related death in the United States. Colonoscopy is widely preferred for CRC screening and is the most commonly used method in the United States. Adequate bowel preparation is essential for successful colonoscopy CRC screening. However, up to one-quarter of colonoscopies are associated with inadequate bowel preparation, which may result in reduced polyp and adenoma detection rates, unsuccessful screens, and an increased likelihood of repeat procedure. In addition, standardized criteria and assessment scales for bowel preparation quality are lacking. While several bowel preparation quality scales are referred to in the literature, these differ greatly in grading methodology and categorization criteria. Published reliability and validity data are available for five bowel preparation quality assessment scales, which vary in several key attributes. However, clinicians and researchers continue to use a variety of bowel preparation quality measures, including nonvalidated scales, leading to potential confusion and difficulty when comparing quality results among clinicians and across clinical trials. Optimal clinical criteria for bowel preparation quality remain controversial. The use of validated bowel preparation quality scales with stringent but simple scoring criteria would help clarify clinical trial data as well as the performance of colonoscopy in clinical practice related to quality measurements.
基金Funded by the National Natural Science Foundation of China (Nos.50902150 & 90916019)the Graduate Innovation Foundation of the National University of Defense Technology(No.S100103)
文摘The amorphous boron nitride ceramic powders were prepared at 750-950 ℃ by the low-cost urea route, and the effects of preparation temperatures, molar ratios of the raw materials and oxidation treatment on the composition, structure and surface morphology of the products were investigated through FT-IR, XRD and SEM. The results show that the products ceramize and crystallize gradually with the increase of the temperature. When the molar ratio and reaction temperature are 3：2 and 850 ℃, respectively, the products have high purity, compact structure and nice shape. The oxidation treatment at 450 ℃ will not impair the composition and structure of boron nitride but effectively remove the impurities.
文摘GaN powder of nanometer scale was prepared by metal organic chemical vapor deposition using diethylgallium azide as precursor. The resulting powder was characterized by XRD and TEM. It has been found that the particle size of the powder obtained is affected by the deposition temperature, and the fine crystals formed in temperature range 500 similar to 650 degrees C were hexagonal.
文摘AIM To compare the efficacy of fixed-time split dose and split dose of an oral sodium picosulfate for bowel preparation.METHODS This is study was prospective, randomized controlled study performed at a single Institution(2013-058). A total of 204 subjects were assigned to receive one of two sodium picosulfate regimens(i.e., fixed-time split or split) prior to colonoscopy. Main outcome measurements were bowel preparation quality and subject tolerability.RESULTS There was no statistical difference between the fixedtime split dose regimen group and the split dose regimen group(Ottawa score mean 2.57 ± 1.91 vs 2.80 ± 2.51, P = 0.457). Cecal intubation time and physician's satisfaction of inspection were not significantly different between the two groups(P = 0.428, P = 0.489). On subgroup analysis, for afternoon procedures, the fixed-time split dose regimen was equally effective as compared with the split dose regimen(Ottawa score mean 2.56 ± 1.78 vs 2.59 ± 2.27, P = 0.932). There was no difference in tolerability or compliance between the two groups. Nausea was 21.2% in the fixed-time split dose group and 14.3% in the split dose group(P = 0.136). Vomiting was 7.1% and 2.9%(P = 0.164), abdominal discomfort 7.1% and 4.8%(P = 0.484), dizziness 1% and 4.8%(P = 0.113), cold sweating 1% and 0%(P = 0.302) and palpitation 0% and 1%(P = 0.330), respectively. Sleep disturbance was two(2%) patients in the fixed-time split dose group and zero(0%) patient in the split dose preparation(P = 0.143) group.CONCLUSION A fixed-time split dose regimen with sodium picosulfate is not inferior to a split dose regimen for bowel preparation and equally effective for afternoon colonoscopy.
文摘目的基于“真实世界”研究2 L复方聚乙二醇电解质溶液(PEG)在结肠镜检查前肠道准备时的应用效果。方法选取2022年11月至2023年4月在我院消化内镜中心使用2 L PEG方案进行肠道准备的4268例患者,根据波士顿肠道准备量表(BBPS)对总体、各段结肠的清洗结果进行评分,按照是否合格分为合格组(n=3802)和不合格组(n=466)。比较两组的危险因素、依从性及患者感受等。结果在使用PEG进行肠道准备的4268例检查者中,3802例合格(合格率89.1%),466例不合格(不合格率10.9%)。BBPS总评分为(6.60±1.10)分,右侧结肠评分为(2.05±0.48)分,横结肠评分为(2.45±0.55)分,左侧结肠为(2.10±0.45)分。息肉总体检出率为51.6%(2203/4268)。进行多因素Logistic回归方程分析,结果显示,男性、胃肠道外科手术史、糖尿病史、每周排便<3次均为导致结肠镜检查前肠道准备不合格的危险因素(均OR>1,P<0.05)。结论2 L PEG方案能够基本满足中国人结肠镜检查肠道准备的需求,对于男性、胃肠道外科手术史、糖尿病史、每周排便<3次的检查者需要进行更严格的肠道准备方式。
