目的 分析主动脉夹层的临床及病理特点。 方法 回顾性分析1998年1月－2011年10月26例主动脉夹层致死的临床及法医尸检病理资料，对其发病、死亡经过、诊断、死因进行总结。 结果 26例主动脉夹层平均发病年龄为39.2岁，男女比例为3.3︰1；26例中6例无临床诊断，17例误诊，3例疑似诊断。26例主动脉夹层中，夹层破裂致心包填塞死亡20例，夹层破裂致失血性休克死亡5例，主动脉夹层未破裂1例系心衰致死；26例按DeBakey分类标准9例为Ⅰ型，14例为Ⅱ型，3例为Ⅲ型。 结论 临床应警惕主动脉夹层的特殊临床表现并采取必要的辅助检查，有助于主动脉夹层的诊治和减少医疗纠纷的发生。
目的 分析心脏手术相关医疗纠纷的临床及法医学特点，并就发生原因进行剖析及提出相应防范措施。 方法 对2002年1月－2011年12月四川华西法医学鉴定中心受理的四川省各级医疗机构发生的17例与心脏手术相关的医疗纠纷法医学鉴定资料进行回顾性分析。 结果 17例心脏手术相关医疗纠纷中，12例进行了尸体解剖死因鉴定，死亡原因有心脏传导系统出血，术后感染，低心排量综合症、肺动脉高压、失血性休克致死等。其余5例加上尸体解剖2例在内共7例进行了医疗过错鉴定，存在的医疗过错包括术前检查不完善，告知不充分，手术操作不细致，术后观察、处理不足，医疗记录不完整等。 结论 心脏手术相关医疗纠纷与术后并发症关系密切，医护人员应重视对心脏术后并发症的防治。尸体解剖对解决心脏术后死亡引起的医疗纠纷具有重要意义。
目的 分析骨科医疗纠纷的原因及特点，为医疗纠纷的防范提供参考。 方法 收集2010年1月－2011年12月四川华西法医学鉴定中心涉及四川省各级医疗机构的骨科医疗纠纷鉴定案例55例，进行回顾性分析。 结果 55例骨科医疗纠纷中2010年25例，2011年30例；医源性医疗纠纷41例（74.5%），非医源性医疗纠纷14例（25.5%）。医源性医疗纠纷中医疗机构存在的问题主要以手术操作不当及失误为主（15例，占27.3%），其次为医患沟通不到位（8例，占14.5%）。 结论 骨科医疗纠纷防范的关键在于医务人员认真履行其诊疗义务。
【摘要】 目的 从法医病理学角度分析引起医疗纠纷的孕产妇死亡原因、医疗纠纷发生原因并提出相关防范措施。 方法 对1999年1月-2008年12月间46例引起医疗纠纷的孕产妇死亡案例进行回顾性分析。 结果 孕产妇死亡年龄以30岁以上多见，死亡时妊娠时间以围产期居多（87.0%）。死亡原因中产科失血性休克死亡21例（45.7%），栓塞类疾病死亡8例（17.4%），感染性疾病死亡5例（10.8%），其他原因死亡12例（26.1%）。46例中属非医疗过失性医疗纠纷8例（17.4%），医疗过失性纠纷38例（82.6%），医疗过失的原因主要为抢救不及时、处理不当、误诊误治等。涉及纠纷的医院以县区级医院居多（54.3%）。 结论 通过法医病理学司法鉴定查明死亡原因，明确医疗责任及医疗纠纷原因，已成为解决孕产妇死亡医疗纠纷的重要手段。【Abstract】 Objective To analyze the causes of maternal death with medical disputes, the causes of medical disputes, and to recommend the related preventions through a forensic pathological angle. Methods We retrospectively analyzed 46 cases of maternal death with medical disputes which were collected by West China Center of Forensic Medicine Service in Sichuan between January 1999 and December 2008. Results Most maternal deaths occurred over 30 years old. They most frequently happened during the peri-natal period (87.0%). The causes of death included obstetric hemorrhagic shock in 21 cases (45.7%), embolism-like diseases in 8 cases (17.4%), infectious diseases in 5 cases (10.8%) and other reasons in 12 cases (26.1%). Among all the 46 cases of medical disputes, 8 (17.4%) were not due to medical malpractices, while the other 38 cases (82.6%) had something to do with such medical malpractices as delayed or inappropriate treatment, misdiagnosis and so on. Most of the malpractices in these cases involved medical institutions at a county level (54.3%). Conclusion Forensic judicatory appraisal is important to resolve medical disputes of maternal death by finding out the cause of death, clarifying the medical responsibility and clearing the cause of medical disputes.
ObjectiveTo analyze the clinical and pathologic features of paraquat poisoning, discuss the damage mechanism of pulmonary fibrosis caused by paraquat poisoning. MethodsWe retrospectively analyzed the paraquat poisoning-related cases collected in recent years from January 2010 to December 2013, and compared the clinical features and pathologic changes between acute and chronic paraquat poisoning cases. ResultsThe main clinical and pathologic manifestation of paraquat poisoning was multiple organ damage, especially with lung as its target organ. In acute poisoning deaths, the lung injury was characterized by the pulmonary edema and formation of lung transparent membrane; In chronic poisoning deaths, the injury was characterized by the formation of lung transparent membrane and pulmonary fibrosis. ConclusionIn order to make an earlier diagnosis in clinical cases, we should strengthen the cognition of clinical manifestations and damage mechanism of paraquat poisoning. To obtain an accurate conclusion in forensic medicine appraisal, we should draw a comprehensive analysis of the forensic case, the clinical data, the toxicological analysis and the autopsical results.
ObjectiveTo explore the common causes and the clinical pathological characteristics of infant death which occurred after vaccination. MethodsThe study retrospectively analyzed the data of 13 cases of infant death occurring after vaccination from January 2009 to September 2014 in West China Medico-legal Expertise Center. ResultsAmong the 13 cases of infant death, 12 were dead from lethal respiratory system and cardiovascular system diseases, 1 from mechanic asphyxia caused by milk intake. All cases were coupling disease death and had no direct correlation with vaccination. ConclusionSystematic and comprehensive forensic pathological examination is helpful to clarify the cause of death, reveal the relationship between vaccination and the cause of death, and contribute to proper processing of such incidents.
ObjectiveTo provide references in the forensic identification of injury and cerebrovascular malformation involved death cases, and to reduce the relevant medical dispute by exploring the forensic pathological features, identification of medical dispute as well as relationship between injury and disease. MethodsWe collected 33 cases of cerebrovascular malformation from January 2006 to December 2014 in West China Center of Forensic Medicine, including details of cases, clinical medical record and forensic pathology examination, and then the cases were retrospectively analyzed. ResultsIn the 33 cases, the average age of the individuals was 37.4 years old, and the male/female ratio was 23/10. Nineteen patients (57.6%) died within 1 hour. Seventeen patients with mixed pathological type of cerebrovascular malformation dominated (51.5%). Medical dispute happened in 7 cases (21.1%), 4 of which were identified to be led by medical fault and 3 with no medical fault. Relationship between injury and disease was analyzed in 11 cases (33.3%), in which injury was identified to take full responsibility in 1 case, inductive cause of death in 9 cases, and no relationship between injury and death in 1 case. ConclusionComprehensive and systematic investigation of forensic pathology plays an important role in the proper settlement of medical disputes as well as the identification of cause of death and relationship between injury and disease.
ObjectiveTo study the expressions of Renin, angiotensin converting enzyme (ACE), angiotensin receptor 1 (AT1R), and AT2R in synovial tissue of osteoarthritis (OA) at different stages.MethodsThe patients who were treated with upper knee amputation because of trauma or total knee arthroplasty for OA between January 2018 and December 2018 were enrolled. Among them, 32 patients who met the selection criteria were included in the study. According to the Kellgren-Lawrence (K-L) X-ray classification, they were allocated to normal synovial group (group A, n=9), moderate OA synovial group (group B, n=11, K-L level 3), and advanced OA synovial group (group C, n=12, K-L level 4). The relative expressions of Renin, ACE, AT1R, and AT2R mRNAs and proteins were detected by real-time fluorescence quantitative PCR (qRT-PCR) and Western blot.ResultsThe relative expressions of Renin, ACE, and AT1R mRNAs and proteins were significantly higher in group B and group C than in group A (P<0.05). The relative expressions of ACE and AT1R mRNAs and proteins and Renin protein were significantly higher in group C than in group B (P<0.05). However, the relative expressions of AT2R mRNA and protein were lower in group B and group C than in group A (P<0.05), and in group C than in group B (P<0.05).ConclusionThe expressions of Renin, ACE, and AT1R in synovial tissue of osteoarthritis significantly increase as the K-L level increased, and the expression of AT2R decreases. Renin, ACE, AT1R, and AT2R have a certain degree of correlation with the development of OA.
ObjectiveTo summarize research progress of the effect of knee flexion position on postoperative blood loss and knee range of motion (ROM) after total knee arthroplasty (TKA).MethodsThe relevant literature at home and abroad was reviewed and summarized from mechanism, research status, progress, and clinical outcome. The differences of clinical results caused by different positions, flexion angles, and keeping time were compared.ResultsKeeping knee flexion after TKA can reduce postoperative blood loss through the angle change of blood vessels and increase knee early ROM by improving flexion muscle strength. When the flexion angle of the knee is large and the flexion position is keeping for a long time, the postoperative blood loss and the knee ROM can be significantly improved. However, the amount of blood loss and ROM are not further improved in the patients with keeping knee flexion for more than 24 hours compared with less than 24 hours.ConclusionKeeping knee flexion after TKA is a simple and effective method to reduce postoperative blood loss and improve knee ROM. However, the optimal knee flexion angle and time are needed to be further explored.