BACKGROUND Odontogenic infection is one of the common infectious diseases in oral and maxillofacial head and neck regions.Clinically,if early odontogenic infections such as acute periapical periodontitis,alveolar absc...BACKGROUND Odontogenic infection is one of the common infectious diseases in oral and maxillofacial head and neck regions.Clinically,if early odontogenic infections such as acute periapical periodontitis,alveolar abscess,and pericoronitis of wisdom teeth are not treated timely,effectively and correctly,the infected tissue may spread up to the skull and brain,down to the thoracic cavity,abdominal cavity and other areas through the natural potential fascial space in the oral and maxillofacial head and neck.Severe multi-space infections are formed and can eventually lead to life-threatening complications(LTCs),such as intracranial infection,pleural effusion,empyema,sepsis and even death.CASE SUMMARY We report a rare case of death in a 41-year-old man with severe odontogenic multi-space infections in the oral and maxillofacial head and neck regions.One week before admission,due to pain in the right lower posterior teeth,the patient placed a cigarette butt dipped in the pesticide"Miehailin"into the"dental cavity"to relieve the pain.Within a week,the infection gradually spread bilaterally to the floor of the mouth,submandibular space,neck,chest,waist,back,temporal and other areas.The patient had difficulty breathing,swallowing and eating,and was transferred to our hospital as an emergency admission.Following admission,oral and maxillofacial surgeons immediately organized consultations with doctors in otolaryngology,thoracic surgery,general surgery,hematology,anesthesia and the intensive care unit to assist with treatment.The patient was treated with the highest level of antibiotics(vancomycin)and extensive abscess incision and drainage in the oral,maxillofacial,head and neck,chest and back regions.Unfortunately,the patient died of septic shock and multiple organ failure on the third day after admission.CONCLUSION Odontogenic infection can cause serious multi-space infections in the oral and maxillofacial head and neck regions,which can result in multiple LTCs.The management and treatment of LTCs such as multi-space infections should be multidisciplinary led by oral and maxillofacial surgeons.展开更多
【目的】为保护并优化高度城镇化地区的碳汇空间,有必要系统研究其时空演变特征及规律。【方法】本研究聚焦苏南地区“城镇尺度”的碳汇空间,在研究其时空演变特征的基础上,结合斑块生成土地利用变化模拟(patch-generating land use sim...【目的】为保护并优化高度城镇化地区的碳汇空间,有必要系统研究其时空演变特征及规律。【方法】本研究聚焦苏南地区“城镇尺度”的碳汇空间,在研究其时空演变特征的基础上,结合斑块生成土地利用变化模拟(patch-generating land use simulation,PLUS)模型和聚类分析法研判不同城镇综合响应状态,并提出差异化的碳汇空间管控策略。【结果】1)2000—2020年苏南地区碳汇空间面积大幅减少,减少区域高度集中于高价值碳汇空间。碳汇空间格局在城镇尺度上未因城镇化而全面瓦解,表现出较强的稳定性。2)通过对自然增长情景、碳汇保护情景、碳汇强化情景3种情景的模拟,发现加大碳汇空间保护力度能够实现高质量碳汇空间扩张,但需要警惕生态功能单一化风险,避免盲目追求“高碳汇系数”。3)在3种模拟情景下,大部分城镇碳汇空间结构较稳定,建议通过存量挖潜与功能置换等方式优化碳汇空间;而部分敏感型城镇则呈现差异化演变路径,需根据其具体风险类型,实施更具针对性的管控策略。【结论】快速城镇化地区碳汇空间面积虽然呈现缩减趋势,但在城镇尺度表现出稳定性与敏感性共存的特征。这一特性可通过多情景模拟研判,从而为制定差异化的城镇碳汇空间管控策略提供科学依据。展开更多
作为人们日常生活和休闲娱乐活动的重要场所,城市公园绿地活力的提升对优化公共空间布局、提高居民生活质量及推动城市可持续发展具有重要意义。当前,其已成为城市空间研究的热点议题,研究成果数量和社会关注度持续增长。本研究首先,基...作为人们日常生活和休闲娱乐活动的重要场所,城市公园绿地活力的提升对优化公共空间布局、提高居民生活质量及推动城市可持续发展具有重要意义。当前,其已成为城市空间研究的热点议题,研究成果数量和社会关注度持续增长。本研究首先,基于CNKI(中国知网)和WOS(Web of Science)数据库,使用CiteSpace知识图谱工具,系统分析了城市公园绿地活力研究的演进脉络;其次,根据国家政策导向和文献计量法分析了突变节点,并将其分为3个阶段:初步理论探索阶段(2012年以前)、中期实证阶段(2012—2019年)和信息深化阶段(2019年至今);再次,总结了各阶段的研究重点与发展方向,并识别了当前研究中存在的不足;最后,提出了未来深化路径。展开更多
文摘BACKGROUND Odontogenic infection is one of the common infectious diseases in oral and maxillofacial head and neck regions.Clinically,if early odontogenic infections such as acute periapical periodontitis,alveolar abscess,and pericoronitis of wisdom teeth are not treated timely,effectively and correctly,the infected tissue may spread up to the skull and brain,down to the thoracic cavity,abdominal cavity and other areas through the natural potential fascial space in the oral and maxillofacial head and neck.Severe multi-space infections are formed and can eventually lead to life-threatening complications(LTCs),such as intracranial infection,pleural effusion,empyema,sepsis and even death.CASE SUMMARY We report a rare case of death in a 41-year-old man with severe odontogenic multi-space infections in the oral and maxillofacial head and neck regions.One week before admission,due to pain in the right lower posterior teeth,the patient placed a cigarette butt dipped in the pesticide"Miehailin"into the"dental cavity"to relieve the pain.Within a week,the infection gradually spread bilaterally to the floor of the mouth,submandibular space,neck,chest,waist,back,temporal and other areas.The patient had difficulty breathing,swallowing and eating,and was transferred to our hospital as an emergency admission.Following admission,oral and maxillofacial surgeons immediately organized consultations with doctors in otolaryngology,thoracic surgery,general surgery,hematology,anesthesia and the intensive care unit to assist with treatment.The patient was treated with the highest level of antibiotics(vancomycin)and extensive abscess incision and drainage in the oral,maxillofacial,head and neck,chest and back regions.Unfortunately,the patient died of septic shock and multiple organ failure on the third day after admission.CONCLUSION Odontogenic infection can cause serious multi-space infections in the oral and maxillofacial head and neck regions,which can result in multiple LTCs.The management and treatment of LTCs such as multi-space infections should be multidisciplinary led by oral and maxillofacial surgeons.
文摘【目的】为保护并优化高度城镇化地区的碳汇空间,有必要系统研究其时空演变特征及规律。【方法】本研究聚焦苏南地区“城镇尺度”的碳汇空间,在研究其时空演变特征的基础上,结合斑块生成土地利用变化模拟(patch-generating land use simulation,PLUS)模型和聚类分析法研判不同城镇综合响应状态,并提出差异化的碳汇空间管控策略。【结果】1)2000—2020年苏南地区碳汇空间面积大幅减少,减少区域高度集中于高价值碳汇空间。碳汇空间格局在城镇尺度上未因城镇化而全面瓦解,表现出较强的稳定性。2)通过对自然增长情景、碳汇保护情景、碳汇强化情景3种情景的模拟,发现加大碳汇空间保护力度能够实现高质量碳汇空间扩张,但需要警惕生态功能单一化风险,避免盲目追求“高碳汇系数”。3)在3种模拟情景下,大部分城镇碳汇空间结构较稳定,建议通过存量挖潜与功能置换等方式优化碳汇空间;而部分敏感型城镇则呈现差异化演变路径,需根据其具体风险类型,实施更具针对性的管控策略。【结论】快速城镇化地区碳汇空间面积虽然呈现缩减趋势,但在城镇尺度表现出稳定性与敏感性共存的特征。这一特性可通过多情景模拟研判,从而为制定差异化的城镇碳汇空间管控策略提供科学依据。
文摘作为人们日常生活和休闲娱乐活动的重要场所,城市公园绿地活力的提升对优化公共空间布局、提高居民生活质量及推动城市可持续发展具有重要意义。当前,其已成为城市空间研究的热点议题,研究成果数量和社会关注度持续增长。本研究首先,基于CNKI(中国知网)和WOS(Web of Science)数据库,使用CiteSpace知识图谱工具,系统分析了城市公园绿地活力研究的演进脉络;其次,根据国家政策导向和文献计量法分析了突变节点,并将其分为3个阶段:初步理论探索阶段(2012年以前)、中期实证阶段(2012—2019年)和信息深化阶段(2019年至今);再次,总结了各阶段的研究重点与发展方向,并识别了当前研究中存在的不足;最后,提出了未来深化路径。
