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Impact of centralization of pancreaticoduodenectomy coupled with fast track recovery protocol:a comparative study from India 被引量:6
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作者 Omar J Shah Sadaf A Bangri +3 位作者 Manmohan Singh Reyaz A Lattoo Mohammad Y Bhat Feroze A Khan 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS CSCD 2016年第5期546-552,共7页
BACKGROUND: Fast track strategy in the management of patients undergoing intra-abdominal surgery of various types has emerged as a landmark approach to reduce surgical stress and accelerate recovery. This study was to... BACKGROUND: Fast track strategy in the management of patients undergoing intra-abdominal surgery of various types has emerged as a landmark approach to reduce surgical stress and accelerate recovery. This study was to evaluate the effect of fast track strategy on patients subjected to pancreaticoduo-denectomy (PD) from an individual unit during transit from low to a high volume center. METHODS: A total of 142 PD patients who had been subjected to fast track strategy between June 2008 and September 2012 were compared with 46 patients who had received convention-al surgery between January 2006 and May 2008. Comparative analysis was made of postoperative complications, postopera-tive recovery, length of hospital stay and patient readmission requirement. RESULTS: The patients subjected to fast track strategy had a faster recovery and a shorter hospital stay than those who were treated conventionally (7.8 vs 12.1 days). The intraoperative events like operative blood loss (417.9±83.8 vs 997.4 ±151.8 mL, P<0.001), blood transfused (a median of 0 vs 1 unit,P<0.001) and operative time taken (125 vs 245 minutes,P<0.001) were signiifcantly lower in the fast track group. The frequency of pancreatic ifstula (4.9% vs 13.0%) and delayed gastric empty-ing (7.0% vs 17.4%) was also signiifcantly reduced with fast track treatment. Nevertheless, the readmission rate (11.3% vs 6.5%) was found relatively higher within the fast track group. However, increased readmission rates in this study seem to be independent of fast track protocol. CONCLUSIONS: This preliminary analysis suggests that the fast track approach might be beneifcial to the well-being of the patients after PD, for it accelerates the immediate clinical recovery of patients and signiifcantly shortens their length of hospital stay. 展开更多
关键词 fast track recovery PANCREATICODUODENECTOMY
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Enhanced recovery after surgery strategy to shorten perioperative fasting in children undergoing non-gastrointestinal surgery:A prospective study 被引量:6
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作者 Yan Ying Hong-Zhen Xu Meng-Lan Han 《World Journal of Clinical Cases》 SCIE 2022年第16期5287-5296,共10页
BACKGROUND Enhanced recovery after surgery strategies are increasingly implemented to improve the management of surgical patients.AIM To evaluate the effects of new perioperative fasting protocols in children≥3 mo of... BACKGROUND Enhanced recovery after surgery strategies are increasingly implemented to improve the management of surgical patients.AIM To evaluate the effects of new perioperative fasting protocols in children≥3 mo of age undergoing non-gastrointestinal surgery.METHODS This prospective pilot study included children≥3 mo of age undergoing nongastrointestinal surgery at the Children’s Hospital(Zhejiang University School of Medicine)from January 2020 to June 2020.The children were divided into either a conventional group or an ERAS group according to whether they had been enrolled before or after the implementation of the new perioperative fasting strategy.The children in the conventional group were fasted using conventional strategies,while those in the ERAS group were given individualized fasting protocols preoperatively(6-h fasting for infant formula/non-human milk/solids,4-h fasting for breast milk,and clear fluids allowed within 2 h of surgery)and postoperatively(food permitted from 1 h after surgery).Pre-operative and postoperative fasting times,pre-operative blood glucose,the incidence of postoperative thirst and hunger,the incidence of perioperative vomiting and aspiration,and the degree of satisfaction were evaluated.RESULTS The study included 303 patients(151 in the conventional group and 152 in the ERAS group).Compared with the conventional group,the ERAS group had a shorter pre-operative food fasting time[11.92(4.00,19.33)vs 13.00(6.00,20.28)h,P<0.001],shorter preoperative liquid fasting time[3.00(2.00,7.50)vs 12.00(3.00,20.28)h,P<0.001],higher preoperative blood glucose level[5.6(4.2,8.2)vs 5.1(4.0,7.4)mmol/L,P<0.001],lower incidence of thirst(74.5%vs 15.3%,P<0.001),shorter time to postoperative feeding[1.17(0.33,6.83)vs 6.00(5.40,9.20),P<0.001],and greater satisfaction[7(0,10)vs 8(5,10),P<0.001].No children experienced perioperative aspiration.The incidences of hunger,perioperative vomiting,and fever were not significantly different between the two groups.CONCLUSION Optimizing fasting and clear fluid drinking before non-gastrointestinal surgery in children≥3 mo of age is possible.It is safe and feasible to start early eating after evaluating the recovery from anesthesia and the swallowing function. 展开更多
关键词 Enhanced recovery after surgery fastING Water deprivation Pre-operative period Postoperative period Intraoperative complications Postoperative complications
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Study on the Application Value of Fast Recovery Surgical Nursing in Patients with Ovarian Cancer after Operation
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作者 ZHANGRongjing 《外文科技期刊数据库(文摘版)医药卫生》 2022年第5期199-202,共4页
Objective: to explore the application value of fast recovery surgical nursing for patients with ovarian cancer after surgery. Methods: this study will adopt the method of sampling survey and group study. Firstly, the ... Objective: to explore the application value of fast recovery surgical nursing for patients with ovarian cancer after surgery. Methods: this study will adopt the method of sampling survey and group study. Firstly, the patients participating in the study will be selected by the sampling survey method. The selected objects will be patients undergoing ovarian cancer surgery in our hospital. The sampling time will be from January 2021 to 2022. In January of this year, the number of samples was 300. After sampling, they were divided into groups according to the random number table method. All patients were divided into control group and experimental group. One half of the patients received routine care and was included in the control group. Fast recovery surgical nursing was included in the experimental group, and the first eating time, first defecation time, hospitalization time, nursing satisfaction and complication rate after nursing were compared between the two groups. Results: from the aspect of the first eating time, the first eating time of the experimental group was lower than that of the control group, and the difference between the two groups of data was significant (P<0.05). The first defecation time of the patients was lower than that of the control group, and the difference between the two groups of data was significant (P<0.05). The difference was significant and statistically significant (P<0.05);from the comparison of the nursing satisfaction of the two groups of patients, the nursing satisfaction of the experimental group was higher than that of the control group, and the difference between the two groups of data was significant and statistically significant (P<0.05);from the comparison of the incidence of complications between the two groups, the incidence of complications in the experimental group was lower than that in the control group, and the difference between the two groups was significant (P<0.05). Conclusion: rapid recovery surgical nursing for ovarian cancer patients after surgery can effectively improve their postoperative physical recovery, improve the treatment effect, and shorten the length of hospital stay. 展开更多
关键词 fast recovery surgical nursing ovarian cancer postoperative nursing application value
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浅层超稠油油藏FAST-SAGD提高采收率技术研究 被引量:10
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作者 罗池辉 赵睿 +2 位作者 杨智 高亮 孟祥兵 《特种油气藏》 CAS CSCD 北大核心 2017年第3期119-122,共4页
新疆油田浅层超稠油油藏部分SAGD部署区储层物性差,非均质性强,为了增加蒸汽热利用率,提高SAGD开发效果,运用数值模拟技术,以风城油田重18井区为例,开展SAGD与水平井组合的FAST-SAGD技术研究,优化了FAST-SAGD井网部署方式、操作方法及... 新疆油田浅层超稠油油藏部分SAGD部署区储层物性差,非均质性强,为了增加蒸汽热利用率,提高SAGD开发效果,运用数值模拟技术,以风城油田重18井区为例,开展SAGD与水平井组合的FAST-SAGD技术研究,优化了FAST-SAGD井网部署方式、操作方法及关键参数。结果表明:加密水平井部署在距油层底部2 m,前期进行溶剂浸泡及微压裂处理,在SAGD井组生产2 a后加密水平井以吞吐的方式启动效果最佳;与常规SAGD相比,FAST-SAGD开采周期缩短3 a,最终采收率提高9.3%,油汽比提高0.02。研究结果对浅层超稠油油藏SAGD高效开发有一定指导意义。 展开更多
关键词 浅层超稠油 fast-SAGD 加密水平井 采收率 风城油田
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超稠油FAST-SAGD技术影响因素分析 被引量:6
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作者 王建俊 鞠斌山 +1 位作者 陈常红 侯国儒 《特种油气藏》 CAS CSCD 北大核心 2016年第2期89-92,155,共4页
利用稠油热采数值模拟手段,以辽河油田超稠油油藏为基础,对比FAST-SAGD与传统双水平井SAGD的开发效果,并分析影响FAST-SAGD的关键因素,以提高SAGD的开发效果。研究结果表明:FAST-SAGD蒸汽腔横向发育速度比传统SAGD明显加快,采收率提高2.... 利用稠油热采数值模拟手段,以辽河油田超稠油油藏为基础,对比FAST-SAGD与传统双水平井SAGD的开发效果,并分析影响FAST-SAGD的关键因素,以提高SAGD的开发效果。研究结果表明:FAST-SAGD蒸汽腔横向发育速度比传统SAGD明显加快,采收率提高2.5%,累计油汽比增加0.039 m3/m3,生产时间缩短46.6%。以采收率与热效率作为评价指标,得到FAST-SAGD影响因素的最优值:添加井与SAGD井组的生产井之间垂向距离为6m,启动时间为12个月,吞吐周期数为2,注汽压力为10 MPa,注汽速度为800 m3/d,SAGD井组注气井注汽速度为200 m3/d。研究成果对FAST-SAGD的矿场应用具有一定的理论指导意义。 展开更多
关键词 fast-SAGD 添加井 敏感因素 采收率 累计油汽比 辽河油田
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层析凝胶DEAE Sepharose Fast Flow分离纯化5’-混合脱氧单核苷酸 被引量:2
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作者 王光柱 陈枢青 《中国现代应用药学》 CAS CSCD 北大核心 2007年第1期17-20,共4页
目的针对5’-混合脱氧单核苷酸的理化特性,研究利用DEAE Sepharose Fast F low凝胶分离纯化5’-混合脱氧单核苷酸。方法上样缓冲液采用20 mmol/L Tris,pH9.0,上柱量≤7.5mg/mL.gel,上柱流速5mL/m in,洗脱缓冲液采用20 mmol/LTris+0.025m... 目的针对5’-混合脱氧单核苷酸的理化特性,研究利用DEAE Sepharose Fast F low凝胶分离纯化5’-混合脱氧单核苷酸。方法上样缓冲液采用20 mmol/L Tris,pH9.0,上柱量≤7.5mg/mL.gel,上柱流速5mL/m in,洗脱缓冲液采用20 mmol/LTris+0.025mol/L NaC l,pH 9.0,洗脱流速0.5mL/m in。结果实验结果发现dCMP,dAMP,dTMP的收率为95%以上,dGMP的收率为85%以上,所获得的混合脱氧单核苷酸经高效液相色谱检测色谱纯达98%以上。 展开更多
关键词 混合脱氧单核苷酸 DEAE SEPHAROSE fast FLOW 收率 纯度
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Introducing an enhanced recovery after surgery program in colorectal surgery:A single center experience 被引量:31
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作者 Stefano Bona Mattia Molteni +5 位作者 Riccardo Rosati Ugo Elmore Pietro Bagnoli Roberta Monzani Monica Caravaca Marco Montorsi 《World Journal of Gastroenterology》 SCIE CAS 2014年第46期17578-17587,共10页
AIM: To study the implementation of an enhanced recovery after surgery (ERAS) program at a large University Hospital from &#x0201c;pilot study&#x0201d; to &#x0201c;standard of care&#x0201d;.
关键词 Enhanced recovery after surgery fast-track surgery Implementation of enhanced recovery after surgery protocol Compliance to enhanced recovery after surgery protocol Colorectal surgery
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Enhanced recovery for colorectal surgery: Practical hints, results and future challenges 被引量:1
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作者 Gianpiero Gravante Muhammad Elmussareh 《World Journal of Gastrointestinal Surgery》 SCIE CAS 2012年第8期190-198,共9页
Enhanced recovery after surgery (ERAS) protocols are now achieving worldwide diffusion in both university and district hospitals with special interest in colorectal surgery. The optimization of the patient’s preopera... Enhanced recovery after surgery (ERAS) protocols are now achieving worldwide diffusion in both university and district hospitals with special interest in colorectal surgery. The optimization of the patient’s preoperative clinical conditions, the careful intraoperative administration of fluids and drugs and the postoperative encouragement to resume the normal physiological functions as early as possible has produced results in a large amounts of studies. These approaches successfully challenged long-standing and well-established perioperative managements and finally achieved the status of gold standard treatments for the perioperative management of uncomplicated colorectal surgery. Even more important, it seems that the clinical improvement of the patient’s clinical management through ERAS protocols is now reaching his best outcomes (length of stay of 4-6 d after the operation) and therefore any further measures add little to the results already established (i.e., the adjunct of laparoscopic surgery to ERAS). Still dedicated meetings and courses around the world are exploring new aspects including the improvement the preoperative nutrition status to provide the energy necessary to face the surgical stress, the preoperative individuation of special requirements that could be properly addressed before the date of surgery and therefore would reduce the number of unnecessary days spent in hospital once fully recovered (i.e., rehabilitation, social discharges), and finally the development of an important web of out-of-hours direct access in order to individuate alarm symptoms in those patients at risk of complications that could prompt an early readmission. 展开更多
关键词 Enhanced recovery fast TRACK COLORECTAL SURGERY LENGTH of stay
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Fast-track rehabilitation vs conventional care in laparoscopic colorectal resection for colorectal malignancy: A meta-analysis 被引量:26
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作者 Ping Li Fang Fang +3 位作者 Jia-Xun Cai Dong Tang Qing-Guo Li Dao-Rong Wang 《World Journal of Gastroenterology》 SCIE CAS 2013年第47期9119-9126,共8页
AIM:To evaluate the fast-track rehabilitation protocol and laparoscopic surgery(LFT)vs conventional care strategies and laparoscopic surgery(LCC).METHODS:Studies and relevant literature comparing the effects of LFT an... AIM:To evaluate the fast-track rehabilitation protocol and laparoscopic surgery(LFT)vs conventional care strategies and laparoscopic surgery(LCC).METHODS:Studies and relevant literature comparing the effects of LFT and LCC for colorectal malignancy were identified in MEDLINE,the Cochrane Central Register of Controlled Trials and EMBASE.The complications and re-admission after approximately 1 mo were assessed.RESULTS:Six recent randomized controlled trials(RCTs)were included in this meta-analysis,which related to 655 enrolled patients.These studies demonstrated that compared with LCC,LFT has fewer complications and a similar incidence of re-admission after approximately 1 mo.LFT had a pooled RR of 0.60(95%CI:0.46-0.79,P<0.001)compared with a pooled RR of 0.69(95%CI:0.34-1.40,P>0.5)for LCC.CONCLUSION:LFT for colorectal malignancy is safe and efficacious.Larger prospective RCTs should be conducted to further compare the efficacy and safety of this approach. 展开更多
关键词 Laparoscopic SURGERY fast-TRACK REHABILITATION Enhanced recovery COLORECTAL SURGERY Complications READMISSION
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A 5-Year Review of Gynaecological Oncology Patients Managed by a Fast Track Surgery Program 被引量:1
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作者 Jonathan Carter Shannon Philp Rachel O’Connell 《International Journal of Clinical Medicine》 2014年第1期36-41,共6页
Introduction: The aim of this study is to provide a comprehensive 5-year audit of patients undergoing laparotomy for suspected or confirmed gynaecological malignancy to document the frequency and incidence of adverse ... Introduction: The aim of this study is to provide a comprehensive 5-year audit of patients undergoing laparotomy for suspected or confirmed gynaecological malignancy to document the frequency and incidence of adverse events and to investigate factors associated with shorter length of stay and readmission to hospital. Methods: A 5-year surgical audit of the period commencing 2008 and concluding 2012. All patients undergoing laparotomy were included in the audit without exclusions. Approval was granted by the local Ethics Review Committee. Results: Four hundred and twenty-seven patients underwent laparotomy for suspected or confirmed gynaecological malignancy and were managed by Fast Track Surgery (FTS) principles. Average age was 54.8 years and average weight and BMI were 73.4 kg and 28.1 respectively. Ultimately 254 (59%) patients had confirmed malignancy. Average surgery duration was 2.36 hours and average estimated blood loss (EBL) at surgery was 262 mL. Median and mean LOS was 3.0 and 3.5 days respectively with 125 (29%) patients discharged on day 2. Overall transfusion rate was 5%. Other adverse events in decreasing frequency were hospital readmission (3.7%), significant wound infection (3%) and unplanned High Dependency Unit (HDU) admission (1.4%). All other adverse events were uncommon with rates <0.5%. Factors associated with a short LOS included year of surgery, age, performance status, malignant vs benign pathology, the use of COX-2 inhibitors, operation time, incision type, transfusion, and radical hysterectomy, at least 1 complication, if patients tolerated early oral feeding (EOF). In multivariable analysis, year, age, performance status, the use of COX-2 inhibitors, operation time and incision type were significant. Factors associated with readmission included the use of COX-2 inhibitors, operation time, performance of a lymph node dissection, return to operating theatre, operation category at least 1 complication, and in multivariable analysis lymph node dissection and the occurrence of at least 1 complication were significant. Conclusions: This 5-year audit is important in establishing a contemporary incidence and the prevalence rate of serious adverse events for patients with suspected or confirmed gynaecological cancer undergoing laparotomy and managed by FTS principles. The community can be reassured that the incidence of serious adverse events is low when managed by FTS principles. 展开更多
关键词 fast TRACK SURGERY Enhanced recovery Optimized recovery
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基于FAST-FBS集成创新设计方法的玻璃幕墙清洁机设计 被引量:16
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作者 李翠玉 马鑫 《机械设计与研究》 CSCD 北大核心 2023年第2期191-195,201,共6页
为提高产品概念设计的高效性和完整性,解决传统产品设计分析阶段使用多种工具造成的繁杂、重复性问题,构建了一种FAST-FBS集成创新设计方法。该设计方法系统的集成了FAST、FBS两种工具的优势,以FAST分解得出的功能要素作为执行“功能(F)... 为提高产品概念设计的高效性和完整性,解决传统产品设计分析阶段使用多种工具造成的繁杂、重复性问题,构建了一种FAST-FBS集成创新设计方法。该设计方法系统的集成了FAST、FBS两种工具的优势,以FAST分解得出的功能要素作为执行“功能(F)-行为(B)-结构(S)”转换的输入端,通过结合这两种工具改善了设计分析过程中“功能”要素的重叠。将此方法应用于玻璃幕墙清洁机的设计案例中,顺利完成了产品创新实践,验证了该方法的可行性与合理性。研究表明:FAST-FBS集成创新设计方法能够简化设计流程,实现功能分解到结构转换的精准映射,为产品概念设计提供科学、高效的分析工具。 展开更多
关键词 产品设计 玻璃幕墙清洁机 集成fast-FBSAHP 污水回收
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Application Value of Fast Rehabilitation Surgery Concept in Knee Arthroscopy Anterior Cruciate Ligament Reconstruction
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作者 LIGuoqin SONGDechen LIRui 《外文科技期刊数据库(文摘版)医药卫生》 2022年第4期006-010,共5页
Objective: to explore the application value and effect of the concept of fast recovery surgery in arthroscopic anterior cruciate ligament reconstruction. Methods: this paper mainly selects patients who received knee a... Objective: to explore the application value and effect of the concept of fast recovery surgery in arthroscopic anterior cruciate ligament reconstruction. Methods: this paper mainly selects patients who received knee arthroscopy anterior cruciate ligament reconstruction in our hospital from January to December 2021 as the research subjects, including 112 cases, divided into control group (56 cases) and experimental group (56 cases). The main method used in the two groups was the conventional treatment concept;the experimental group was mainly treated with the concept of fast recovery surgery. After the clinical treatment, the application value and effect of the concept of fast recovery surgery were evaluated from the Judet and Lysholm scores, postoperative recovery index, satisfaction and infection rate. Results: the Judet and Lysholm scores were compared, and the excellent and good rates were compared between the two groups at 3 months and 6 months after surgery. Among them, the postoperative score of the experimental group was significantly higher than that of the control group, and the difference between the two groups was statistically significant (P<0.05). The recovery from various indicators in the control group and the experimental group, such as: the length of hospital stay in the control group was longer than that in the experimental group;the recovery time of the knee joint range of motion in the control group was relatively longer;the VAS and BI scores in the experimental group were better than those in the control group. Comparing the satisfaction of patients between the two groups, the satisfaction of patients in the experimental group was significantly higher than that in the control group, and the two groups were statistically significant (P<0.05). Comparing the infection rates of the two groups, the infection rate of the control group was 14.29%, and the infection rate of the experimental group was 1.79%, which fully demonstrated that there was a statistically significant difference in the infection rates between the two groups (P<0.05). Conclusion: in the process of patients undergoing knee arthroscopy anterior cruciate ligament reconstruction, the use of fast rehabilitation surgery concept is more effective than traditional treatment, which can effectively speed up the patients rehabilitation process, shorten the patients hospitalization time and recovery time, and improve the patients experience. Satisfactions with clinical treatment improve patients limb function and then obtain higher quality of life. 展开更多
关键词 fast recovery surgery concept knee arthroscopy anterior cruciate ligament reconstruction
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布比卡因脂质体用于超快通道麻醉对心脏手术患者术后镇痛效果及早期恢复的影响
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作者 孟睿 周俊辉 +1 位作者 钟巍 刘晓乐 《临床研究》 2025年第7期93-96,共4页
目的 探讨布比卡因脂质体用于超快通道麻醉(UFTA)对心脏手术患者术后镇痛效果及早期恢复效果的影响。方法 选取2023年3月至2025年3月在河南省胸科医院行心脏手术104例患者为研究对象,采用随机数字表法分为对照组(布比卡因局部浸润麻醉)... 目的 探讨布比卡因脂质体用于超快通道麻醉(UFTA)对心脏手术患者术后镇痛效果及早期恢复效果的影响。方法 选取2023年3月至2025年3月在河南省胸科医院行心脏手术104例患者为研究对象,采用随机数字表法分为对照组(布比卡因局部浸润麻醉)和试验组(布比卡因脂质体局部浸润麻醉),各52例。两组术中均采用超快通道心脏麻醉,对照组采用布比卡因局部浸润麻醉,试验组术中采用布比卡因脂质体局部浸润麻醉,比较两组术前(T0)、术后6 h(T_(1))、术后12 h(T_(2))、术后24 h(T_(3))、术后48 h(T_(4))的视觉模拟评分法(VAS)评分、血流动力学指标[心率(HR)、平均动脉压(MAP)、血氧饱和度(SpO_(2))],早期恢复情况(术后48 h阿片类药物使用量、ICU住院时间、总住院时间)以及不良反应发生率。结果 两组患者疼痛评分的时间、组间及交互比较,差异均有统计学意义(P<0.05),试验组T_(1)至T_(4)时,疼痛评分均低于同期对照组(P<0.05)。两组患者HR、SpO_(2)的时间、组间及交互比较,差异均有统计学意义(P<0.05),MAP时间、组间比较,差异均有统计学意义(P<0.05),交互比较,差异无统计学意义(P>0.05)。试验组T_(2)至T_(4)时HR低于同期对照组,差异有统计学意义(P<0.05),T_(2)、T_(4)时MAP高于同期对照组,差异均有统计学意义(P<0.05),T_(1)至T_(4)时SpO_(2)高于同期对照组,差异均有统计学意义(P<0.05)。试验组术后48 h阿片类药物使用量低于对照组,差异均有统计学意义(P<0.05),两组ICU住院时间、总住院时间比较,差异无统计学意义(P>0.05)。两组患者不良反应发生率比较,差异无统计学意义(P>0.05)。结论 在心脏手术患者UFTA中采用布比卡因脂质体局部浸润麻醉可有效稳定血流动力学指标,降低术后疼痛评分和阿片类药物使用量,且安全性良好。 展开更多
关键词 超快通道麻醉 心脏手术 布比卡因脂质体 术后镇痛 早期恢复
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强干扰环境下多源数据容灾备份与快速恢复算法
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作者 严峥晖 卢南方 +2 位作者 甘盛霖 张月 易晓峰 《国外电子测量技术》 2025年第6期21-28,共8页
在强干扰环境下,多源数据的异构性和分散性使得不同来源的数据在格式、协议和语义上不兼容,迫使各节点为应对局部干扰独立备份数据,造成邻近区域的数据重复存储,容灾备份与恢复的效率降低。提出一种强干扰环境下多源数据容灾备份与快速... 在强干扰环境下,多源数据的异构性和分散性使得不同来源的数据在格式、协议和语义上不兼容,迫使各节点为应对局部干扰独立备份数据,造成邻近区域的数据重复存储,容灾备份与恢复的效率降低。提出一种强干扰环境下多源数据容灾备份与快速恢复算法,采用K-means聚类对异构数据进行分簇处理,通过轮廓系数法确定最优簇数,迭代更新聚类中心实现数据降维。根据聚类后的多源数据设计双重冗余消除机制:空间维度通过关联矩阵识别空间相近数据并消冗,时间维度基于线性回归模型过滤时序冗余。完成双重消冗后,基于簇头的能量状态对数据展开容灾备份。最后,结合多源数据在时间和空间上的连续性特征,建立联合图域模型,通过模型中数据间的关联性设计迭代恢复策略,从而实现多源数据的高效容灾恢复。实验结果表明:在强干扰环境测试中,所提算法展现出卓越性能,动态编码切换延迟稳定维持在20~30 ms,机会捕获备份吞吐量持续保持7~8 GB/s的高位,回溯精度损失率始终低于0.5%,显著优于对比算法。 展开更多
关键词 强干扰环境 多源数据 容灾备份 快速恢复
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磁共振FRFSE联合多模态影像学技术评估脾脏Gamna-Gandy小体预测乙型肝炎肝硬化患者并发食管胃底静脉曲张价值研究
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作者 刘成环 刘刚 +2 位作者 甘郑宁 尹桂秀 李伟霞 《实用肝脏病杂志》 2025年第2期246-249,共4页
目的探讨应用磁共振成像(MRI)快速恢复快速自旋回波脉冲(FRFSE)序列评估脾脏Gamna-Gandy小体预测乙型肝炎肝硬化并发食管胃底静脉曲张(EGV)的效能。方法2020年1月~2022年12月我院诊治的乙型肝炎肝硬化患者80例,均接受MRI检查,应用不同,... 目的探讨应用磁共振成像(MRI)快速恢复快速自旋回波脉冲(FRFSE)序列评估脾脏Gamna-Gandy小体预测乙型肝炎肝硬化并发食管胃底静脉曲张(EGV)的效能。方法2020年1月~2022年12月我院诊治的乙型肝炎肝硬化患者80例,均接受MRI检查,应用不同,包括FRFSE序列测定门静脉直径、计算脾脏指数和Gamna-Gandy小体,行胃镜检查诊断EGV程度。应用ROC曲线分析指标预测EGV的效能。结果在本组80例乙型肝炎肝硬化患者中,胃镜检查发现轻度EGV者23例,中重度EGV者41例;MR FRFSE序列检查Gamna-Gandy小体阳性率和≥3mm的Gamna-Gandy小体数分别为61.2%和(4.8±1.4)个,显著高于或多于T1W1、T2W1或增强扫描检测(P<0.05);中重度EGV患者门静脉直径、脾脏指数和Gamna-Gandy小体检出数分别为(17.6±2.1)mm、(158.9±32.6)mm 3和(5.5±1.6)个,均显著高于轻度组【分别为(14.6±1.2)mm、(119.6±10.6)mm 3和(3.2±1.0)个,P<0.05】;ROC曲线分析显示,以FRFSE序列检出Gamna-Gandy小体大于4.7个为截断点,其预测中重度EGV的AUC为0.923,敏感度和特异度分别为93.9%和83.9%,显著优于门静脉直径或脾脏指数预测(P<0.05)。结论应用MR FRFSE序列检查脾脏Gamna-Gandy小体能够作为筛查肝硬化患者EGV的无创手段,其价值值得进一步探讨。 展开更多
关键词 肝硬化 食管胃底静脉曲张 磁共振成像 快速恢复快速自旋回波脉冲 脾脏Gamna-Gandy小体 诊断
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一种具有快速恢复能力的过流保护电路设计
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作者 晁慧 陈思宁 陈海进 《电子元件与材料》 北大核心 2025年第1期63-70,共8页
为了减小过流对电路的损害,设计了一种用于纹波电压二次方恒定导通时间(V2 COT)控制的降压(BUCK)转换器的过流保护电路。通过调整纹波注入电路的输出波形,延长其输出信号小于反馈电压信号的时间,推迟导通信号的到来,从而降低系统开关频... 为了减小过流对电路的损害,设计了一种用于纹波电压二次方恒定导通时间(V2 COT)控制的降压(BUCK)转换器的过流保护电路。通过调整纹波注入电路的输出波形,延长其输出信号小于反馈电压信号的时间,推迟导通信号的到来,从而降低系统开关频率。采用0.18μm的BCD(Bipolar-CMOS-DMOS)工艺完成了电路设计和仿真验证。结果表明,当限流阈值为3.9 A时,开关频率最低降为正常工作时的四分之一,相应的占空比最低为0.02。在-20~85℃的温度范围内,限流阈值最大变化了0.88%,故障排除后,恢复时间为18μs。本电路结构简单、恢复时间短,改善了传统过流保护方案恢复时间长的问题。 展开更多
关键词 过流保护 逐周期限流 开关频率 快恢复
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中频感应加热电源用大功率快速软恢复二极管的研制
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作者 赖桂森 谢桂泉 +4 位作者 邵珠柯 刘亿铭 胡茜 梁旭辉 张磊 《固体电子学研究与进展》 2025年第3期75-80,共6页
在大功率中频感应加热电源的逆变电路中,快速晶闸管需要反并联二极管,以释放负载中的无功电流,这要求该二极管具备快速且软的反向恢复能力。本文通过TCAD仿真优化设计了一种超低阳极注入效率的P型发射极效率自调整-场电荷抽取二极管(Sel... 在大功率中频感应加热电源的逆变电路中,快速晶闸管需要反并联二极管,以释放负载中的无功电流,这要求该二极管具备快速且软的反向恢复能力。本文通过TCAD仿真优化设计了一种超低阳极注入效率的P型发射极效率自调整-场电荷抽取二极管(Self-adjusting P emitter efficiency diode-field charge extraction, SPEEDFCE)器件结构,研制了4.5 kV/2.0 kA的快速软恢复二极管。结果表明,新型二极管具有良好的快速软恢复特性,尤其在25℃小电流反向恢复测试条件下,新结构的阴极P+区注入空穴,维持了拖尾电流,避免了电压震荡。 展开更多
关键词 快速软恢复二极管 动态雪崩 反向恢复
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3-D MERGE序列和3-D CUBE序列在腰椎间盘突出症诊断中的对照研究应用
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作者 吴白龙 杨波 +4 位作者 王雷 王芷玥 雷丙俊 汪林 张秀莉 《临床和实验医学杂志》 2025年第23期2551-2554,共4页
目的比较三维多回波恢复梯度回波(3-D MERGE)序列和三维快速自旋回波(3-D CUBE)序列在腰椎间盘突出症诊断中的应用价值。方法回顾性选取2021年4月至2025年5月于蚌埠市第三人民医院进行检查的80例腰椎间盘突出症患者作为研究对象,均进行... 目的比较三维多回波恢复梯度回波(3-D MERGE)序列和三维快速自旋回波(3-D CUBE)序列在腰椎间盘突出症诊断中的应用价值。方法回顾性选取2021年4月至2025年5月于蚌埠市第三人民医院进行检查的80例腰椎间盘突出症患者作为研究对象,均进行磁共振成像(MRI)检查,接受3-D MERGE序列和3-D CUBE序列扫描。比较两种序列神经根直径测量、神经根显示分级、图像质量以及图像清晰度评分。结果两种序列L_(3)、L_(4)、L_(5)、S_(1)神经根直径测量结果比较,差异均无统计学意义(P>0.05)。3-D MERGE序列神经根显示分级优于3-D CUBE序列,差异有统计学意义(P<0.05)。3-D MERGE序列信噪比、对比噪声比分别为(113.67±14.28)、(70.89±11.70)dB,均高于3-D CUBE序列[(96.69±16.31)、(58.94±13.21)dB],差异均有统计学意义(P<0.05)。3-D MERGE序列图像清晰度评分为3分比例为88.75%,高于3-D CUBE序列(73.75%),差异有统计学意义(P<0.05)。结论与3-D CUBE序列相比,3-D MERGE序列在神经根显示上具有更高的清晰度与分辨率,能够更精确判断神经根分级,且图像质量更佳,能够更清晰地展示解剖结构和病变特征。 展开更多
关键词 三维多回波恢复梯度回波序列 三维快速自旋回波序列 腰椎间盘突出症 诊断 应用价值
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基于中医辟谷理论探索间歇性禁食在加速康复外科术前预康复中的临床意义
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作者 狄广慈 张小春 +2 位作者 龚冠闻 江志伟 任青玲 《实用中医内科杂志》 2025年第8期24-27,共4页
周期性辟谷理论是传统中医养生方法,通过不同的方式达到气足不思食,这与现代规律性间歇性禁食理论十分相似,均能发挥抗炎、调节肠道菌群、保护神经等功效。术前预康复通过一系列管理措施增强患者对手术的耐受能力,使机体以最佳状态承受... 周期性辟谷理论是传统中医养生方法,通过不同的方式达到气足不思食,这与现代规律性间歇性禁食理论十分相似,均能发挥抗炎、调节肠道菌群、保护神经等功效。术前预康复通过一系列管理措施增强患者对手术的耐受能力,使机体以最佳状态承受手术应激,是加速康复外科一大革命性创新。结合周期性辟谷理论,术前规律性间歇性禁食可加强对急性手术应激的抵抗力、优化心肺代谢、改善昼夜节律、调节肠道菌群、改善术后伤口修复以及神经元重建,具有广阔的应用前景,值得临床医生重视。 展开更多
关键词 辟谷 间歇性禁食 术前预康复 加速康复外科 昼夜节律
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主动呼吸循环技术改善肺癌患者术后效果的Meta分析
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作者 骆春伶 张红 +3 位作者 夏生桂 朱萍 朱玉霞 王鑫超 《临床医学研究与实践》 2025年第19期5-9,26,共6页
目的通过Meta分析评价主动呼吸循环技术(ACBT)改善肺癌患者术后的临床效果。方法检索从建库至2024年2月在中国知网、万方、维普、PubMed、Embase、the Cochrane Library、Web of Science等数据库中发表的有关ACBT改善肺癌患者术后情况... 目的通过Meta分析评价主动呼吸循环技术(ACBT)改善肺癌患者术后的临床效果。方法检索从建库至2024年2月在中国知网、万方、维普、PubMed、Embase、the Cochrane Library、Web of Science等数据库中发表的有关ACBT改善肺癌患者术后情况的随机对照试验(RCT)。采用RevMan5.3软件进行Meta分析。结果共纳入10篇文献,1044例患者。Meta分析结果显示,试验组的第1秒用力呼气容积(FEV1)高于对照组,差异具有统计学意义(P<0.05)。试验组的6 min步行距离(6MWT)长于对照组,差异具有统计学意义(P<0.05)。试验组的术后住院时间短于对照组,差异具有统计学意义(P<0.05)。试验组的肺不张发生率低于对照组,差异具有统计学意义(P<0.05)。结论ACBT可以改善肺癌患者术后肺功能,增强运动能力,减少肺部并发症的发生,缩短术后住院时间。 展开更多
关键词 主动呼吸循环技术 肺癌 随机对照试验 META分析 快速康复
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