The development of capsule endoscopy(CE) in 2001 has given gastroenterologists the opportunity to investigate the small bowel in a non-invasive way. CE is most commonly performed for obscure gastrointestinal bleeding,...The development of capsule endoscopy(CE) in 2001 has given gastroenterologists the opportunity to investigate the small bowel in a non-invasive way. CE is most commonly performed for obscure gastrointestinal bleeding, but other indications include diagnosis or follow-up of Crohn's disease, suspicion of a small bowel tumor, diagnosis and surveillance of hereditary polyposis syndromes, Nonsteroidal anti-inflammatory drug-induced small bowel lesions and celiac disease.Almost fifteen years have passed since the release of the small bowel capsule. The purpose of this review is to offer the reader a brief but complete overview on small bowel CE anno 2014, including the technical and procedural aspects, the possible complications and the most important indications. We will end with some future perspectives of CE.展开更多
In this paper, the following conclusions are reached: The influence of damage on the stress and strain feilds can be neglected in an asymptotic sense for the solutions of damage field in a plastic solid containing sma...In this paper, the following conclusions are reached: The influence of damage on the stress and strain feilds can be neglected in an asymptotic sense for the solutions of damage field in a plastic solid containing small damage. The formulation of the problem is simplified with an uncoupled approach. Based on experimental results of plastic damage, most of the damage in the material are con- sidered as small damage with the critacal damage variable ω_c<<1. Using this approach, closed form ex- pressions of the near tip damage fields for mode Ⅲ, mode I and the temperature distribution induced by plastic dissipation in a hardening material containing damage are deduced. We point out that the temperature distribution in the process zone is strongly dependent on the damage of materials even for the small damage case. The results of the predicted value of the temperature rise near the tip region ignoring the damage effect is appreciably higher than the observed data. The main reason of this discrepancy is the presence of damage dissipation and the fact that its influence on the calculation of plas- tic dissipation have not been appropriately taken account of. The calculation is improved by taking in- to account the damage effect on the temperature rise, then the T_(max) value is in better accord with the experimental value.展开更多
The small punch test technique （SPT） was used to evaluate the mechanical properties of various materials and the basic method to test material tensile mechanics peqeormance from an inverse finite element （ FE） ari...The small punch test technique （SPT） was used to evaluate the mechanical properties of various materials and the basic method to test material tensile mechanics peqeormance from an inverse finite element （ FE） arithmetic with SPT was put forward. The research shows that specific tensile mechanical behavior and strain-stress distribution of each district of weld seam can be accurately determined by small punch test. Therefore, mechanical behavior of the inhomogeneous joint can be predicted by a numerical model. The simulation comes to good agreement with experimental data.展开更多
We present an unusual clinical manifestation of a rectal rupture discussing two cases of female patients hospitalized and operated on urgently. The extraordinary presentations during physical examination, which eventu...We present an unusual clinical manifestation of a rectal rupture discussing two cases of female patients hospitalized and operated on urgently. The extraordinary presentations during physical examination, which eventually provided a solid indication for immediate operation included sigmoid colon prolapse in one case and evisceration of small intestine through the anus in the other. In both patients, Hartmann procedure was successfully performed resulting in relatively fast recovery despite an elderly age and hospital discharge on the 10th postoperative day. Although sigmoid colon or ileal prolapse is not commonly observed in bizarre medical condition, they may be the first symptoms of rectal/rectosigmoid injuries as a result of underlying colon disorder such as diverticular disease, spontaneous rupture or self-injury.展开更多
Background The probability of prosthesis-patient mismatch(PPM)is high in aortic valve replacement surgery for small aortic valve annulus,which increases the postoperative prosthetic valve transvalvular pressure gradie...Background The probability of prosthesis-patient mismatch(PPM)is high in aortic valve replacement surgery for small aortic valve annulus,which increases the postoperative prosthetic valve transvalvular pressure gradient.Concurrent aortic annuloplasty is a commonly applied surgical procedure,but there is currently no uniform standard or guideline on the type of prosthetic valve that should be used during surgery.Therefore,this study aimed to analyze whether there was any difference in the short-term prognosis between the choice of mechanical valves and bioprosthetic valves during aortic valve replacement surgery with concomitant aortic annuloplasty by the Nicks procedure.Methods A retrospective analysis was conducted based on the clinical data from 55 patients undergoing aortic valve replacement surgery with concomitant annuloplasty by the Nicks procedure at the Cardiac Surgery Department of Guangdong Provincial People’s Hospital from November 2021 to December 2023.In this study,all patients received aortic annuloplasty by the Nicks procedure.Among these patients,30 were in the mechanical valve group,while the other 25 were in the bioprosthetic valve group.Data including left ventricular end-diastolic/endsystolic diameters,left ventricular ejection fraction,interventricular septal thickness,left ventricular posterior wall thickness,transvalvular pressure gradient,left ventricular fractional shortening,and left ventricular mass index were collected 1 week preoperatively and 1 week and 3 months postoperatively.Information on gender,age,body surface area,types of perioperative complications,operation time,complication rates,and outcomes was also collected.Results Among the 55 patients enrolled in this study,4 died.The main causes of death included postoperative low cardiac output syndrome,severe pulmonary infection,and multi-organ dysfunction.Meanwhile,there was a statistically significant difference in left ventricular end-diastolic diameter between the mechanical valve group and the biological valve group 1 week after surgery.However,differences in other indicators such as aortic crossclamp duration,cardiopulmonary bypass duration,postoperative ventilator support duration,postoperative intensive care unit(ICU)stay,total postoperative hospital stay,and echocardiography results 1 week and 3 months postoperatively were not significant between the two groups.Conclusions For patients undergoing aortic annuloplasty by the Nicks procedure in the aortic valve replacement surgery,the postoperative recovery time is not significantly different between the bioprosthetic and mechanical valve groups.Additionally,there is no notable difference in the improvement of left ventricular function or the reduction of PPM incidence between the two types of valves.[S Chin J Cardiol 2024;25(1):29-37].展开更多
A lawsuit or "suit in law"is a civil action brought in a court of law in which a plaintiff, a party who claims to have incurred loss as a result of a defendant's actions, demands a legal or equitable rem...A lawsuit or "suit in law"is a civil action brought in a court of law in which a plaintiff, a party who claims to have incurred loss as a result of a defendant's actions, demands a legal or equitable remedy. The defendant is required to respond to the plaintiff's complaint. If the plaintiff is successful, judgment is in the plaintiff's favor, and a variety of court orders may be issued to enforce a right, award damages, or impose a temporary or permanent injunction to prevent an act or compel an act. A declaratory judgment may be issued to prevent future legal disputes. Although not as common, lawsuit may also refer to a criminal action, criminal proceeding, or criminal claim.展开更多
目的分析原发性小肠淋巴瘤(primary small intestinal lymphoma,PSIL)的临床表现、相关辅助检查诊断及手术干预治疗效果,为提高临床诊治效果提供参考。方法回顾分析2015年5月至2020年10月山东大学齐鲁医院普通外科经手术干预及病理证实...目的分析原发性小肠淋巴瘤(primary small intestinal lymphoma,PSIL)的临床表现、相关辅助检查诊断及手术干预治疗效果,为提高临床诊治效果提供参考。方法回顾分析2015年5月至2020年10月山东大学齐鲁医院普通外科经手术干预及病理证实的30例PSIL患者的临床资料,并统计分析患者首诊情况、临床表现、影像学检查结果、手术情况及病理类型。结果30例PSIL患者中,首诊于消化内科15例,占比50.0%;首诊于普通外科11例,占比36.7%;首诊于急诊外科4例,占比13.3%。主要临床表现:腹部疼痛14例,占比46.7%;腹胀、恶心呕吐8例,占比26.7%;消化道出血5例,占比16.7%;腹部包块2例,占比6.7%;无症状1例,占比3.3%。影像学检查:27例患者行腹部CT检查均提示小肠局限性扩张、积液、肠壁增厚;13例患者行小肠镜检查提示小肠病变;2例行胶囊内镜检查提示小肠病变。手术情况:30例PSIL患者均行手术治疗,其中小肠部分切除肠吻合术23例,小肠部分切除小肠造瘘术2例,肠套叠复位+小肠部分切除术1例,小肠部分切除+左半结肠部分切除术3例,小肠部分切除+回盲部切除术1例。术后病理结果:均为非霍奇金淋巴瘤,其中弥漫大B细胞型17例,占比56.7%;T细胞型6例,占比20.0%;边缘区黏膜相关B细胞淋巴瘤3例,占比10.0%;NK/T细胞淋巴瘤2例,占比6.7%;套细胞淋巴瘤1例,占比3.3%;滤泡型淋巴瘤1例,占比3.3%。结论PSIL是较少见的消化道肿瘤,腹部CT、小肠镜检查及胶囊内镜检查均为有效检查手段,可提高诊断准确率;手术治疗是必要手段,可缓解临床症状,明确诊断,指导临床治疗。展开更多
文摘The development of capsule endoscopy(CE) in 2001 has given gastroenterologists the opportunity to investigate the small bowel in a non-invasive way. CE is most commonly performed for obscure gastrointestinal bleeding, but other indications include diagnosis or follow-up of Crohn's disease, suspicion of a small bowel tumor, diagnosis and surveillance of hereditary polyposis syndromes, Nonsteroidal anti-inflammatory drug-induced small bowel lesions and celiac disease.Almost fifteen years have passed since the release of the small bowel capsule. The purpose of this review is to offer the reader a brief but complete overview on small bowel CE anno 2014, including the technical and procedural aspects, the possible complications and the most important indications. We will end with some future perspectives of CE.
基金The project supported by the National Natural Science Foundation of China.
文摘In this paper, the following conclusions are reached: The influence of damage on the stress and strain feilds can be neglected in an asymptotic sense for the solutions of damage field in a plastic solid containing small damage. The formulation of the problem is simplified with an uncoupled approach. Based on experimental results of plastic damage, most of the damage in the material are con- sidered as small damage with the critacal damage variable ω_c<<1. Using this approach, closed form ex- pressions of the near tip damage fields for mode Ⅲ, mode I and the temperature distribution induced by plastic dissipation in a hardening material containing damage are deduced. We point out that the temperature distribution in the process zone is strongly dependent on the damage of materials even for the small damage case. The results of the predicted value of the temperature rise near the tip region ignoring the damage effect is appreciably higher than the observed data. The main reason of this discrepancy is the presence of damage dissipation and the fact that its influence on the calculation of plas- tic dissipation have not been appropriately taken account of. The calculation is improved by taking in- to account the damage effect on the temperature rise, then the T_(max) value is in better accord with the experimental value.
文摘The small punch test technique （SPT） was used to evaluate the mechanical properties of various materials and the basic method to test material tensile mechanics peqeormance from an inverse finite element （ FE） arithmetic with SPT was put forward. The research shows that specific tensile mechanical behavior and strain-stress distribution of each district of weld seam can be accurately determined by small punch test. Therefore, mechanical behavior of the inhomogeneous joint can be predicted by a numerical model. The simulation comes to good agreement with experimental data.
文摘We present an unusual clinical manifestation of a rectal rupture discussing two cases of female patients hospitalized and operated on urgently. The extraordinary presentations during physical examination, which eventually provided a solid indication for immediate operation included sigmoid colon prolapse in one case and evisceration of small intestine through the anus in the other. In both patients, Hartmann procedure was successfully performed resulting in relatively fast recovery despite an elderly age and hospital discharge on the 10th postoperative day. Although sigmoid colon or ileal prolapse is not commonly observed in bizarre medical condition, they may be the first symptoms of rectal/rectosigmoid injuries as a result of underlying colon disorder such as diverticular disease, spontaneous rupture or self-injury.
文摘Background The probability of prosthesis-patient mismatch(PPM)is high in aortic valve replacement surgery for small aortic valve annulus,which increases the postoperative prosthetic valve transvalvular pressure gradient.Concurrent aortic annuloplasty is a commonly applied surgical procedure,but there is currently no uniform standard or guideline on the type of prosthetic valve that should be used during surgery.Therefore,this study aimed to analyze whether there was any difference in the short-term prognosis between the choice of mechanical valves and bioprosthetic valves during aortic valve replacement surgery with concomitant aortic annuloplasty by the Nicks procedure.Methods A retrospective analysis was conducted based on the clinical data from 55 patients undergoing aortic valve replacement surgery with concomitant annuloplasty by the Nicks procedure at the Cardiac Surgery Department of Guangdong Provincial People’s Hospital from November 2021 to December 2023.In this study,all patients received aortic annuloplasty by the Nicks procedure.Among these patients,30 were in the mechanical valve group,while the other 25 were in the bioprosthetic valve group.Data including left ventricular end-diastolic/endsystolic diameters,left ventricular ejection fraction,interventricular septal thickness,left ventricular posterior wall thickness,transvalvular pressure gradient,left ventricular fractional shortening,and left ventricular mass index were collected 1 week preoperatively and 1 week and 3 months postoperatively.Information on gender,age,body surface area,types of perioperative complications,operation time,complication rates,and outcomes was also collected.Results Among the 55 patients enrolled in this study,4 died.The main causes of death included postoperative low cardiac output syndrome,severe pulmonary infection,and multi-organ dysfunction.Meanwhile,there was a statistically significant difference in left ventricular end-diastolic diameter between the mechanical valve group and the biological valve group 1 week after surgery.However,differences in other indicators such as aortic crossclamp duration,cardiopulmonary bypass duration,postoperative ventilator support duration,postoperative intensive care unit(ICU)stay,total postoperative hospital stay,and echocardiography results 1 week and 3 months postoperatively were not significant between the two groups.Conclusions For patients undergoing aortic annuloplasty by the Nicks procedure in the aortic valve replacement surgery,the postoperative recovery time is not significantly different between the bioprosthetic and mechanical valve groups.Additionally,there is no notable difference in the improvement of left ventricular function or the reduction of PPM incidence between the two types of valves.[S Chin J Cardiol 2024;25(1):29-37].
文摘A lawsuit or "suit in law"is a civil action brought in a court of law in which a plaintiff, a party who claims to have incurred loss as a result of a defendant's actions, demands a legal or equitable remedy. The defendant is required to respond to the plaintiff's complaint. If the plaintiff is successful, judgment is in the plaintiff's favor, and a variety of court orders may be issued to enforce a right, award damages, or impose a temporary or permanent injunction to prevent an act or compel an act. A declaratory judgment may be issued to prevent future legal disputes. Although not as common, lawsuit may also refer to a criminal action, criminal proceeding, or criminal claim.
文摘目的分析原发性小肠淋巴瘤(primary small intestinal lymphoma,PSIL)的临床表现、相关辅助检查诊断及手术干预治疗效果,为提高临床诊治效果提供参考。方法回顾分析2015年5月至2020年10月山东大学齐鲁医院普通外科经手术干预及病理证实的30例PSIL患者的临床资料,并统计分析患者首诊情况、临床表现、影像学检查结果、手术情况及病理类型。结果30例PSIL患者中,首诊于消化内科15例,占比50.0%;首诊于普通外科11例,占比36.7%;首诊于急诊外科4例,占比13.3%。主要临床表现:腹部疼痛14例,占比46.7%;腹胀、恶心呕吐8例,占比26.7%;消化道出血5例,占比16.7%;腹部包块2例,占比6.7%;无症状1例,占比3.3%。影像学检查:27例患者行腹部CT检查均提示小肠局限性扩张、积液、肠壁增厚;13例患者行小肠镜检查提示小肠病变;2例行胶囊内镜检查提示小肠病变。手术情况:30例PSIL患者均行手术治疗,其中小肠部分切除肠吻合术23例,小肠部分切除小肠造瘘术2例,肠套叠复位+小肠部分切除术1例,小肠部分切除+左半结肠部分切除术3例,小肠部分切除+回盲部切除术1例。术后病理结果:均为非霍奇金淋巴瘤,其中弥漫大B细胞型17例,占比56.7%;T细胞型6例,占比20.0%;边缘区黏膜相关B细胞淋巴瘤3例,占比10.0%;NK/T细胞淋巴瘤2例,占比6.7%;套细胞淋巴瘤1例,占比3.3%;滤泡型淋巴瘤1例,占比3.3%。结论PSIL是较少见的消化道肿瘤,腹部CT、小肠镜检查及胶囊内镜检查均为有效检查手段,可提高诊断准确率;手术治疗是必要手段,可缓解临床症状,明确诊断,指导临床治疗。
