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西南日本俯冲带的热状态:俯冲板块年龄史的影响 被引量:1
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作者 Kelin Wang 戴佩君 《海洋地质译丛》 1996年第2期47-58,共12页
在西南日本的南海海槽,菲律宾海板块正以约正交于大陆边缘的方向俯冲到欧亚大陆之下(图1)。尽管其东北部的区域构造即涉及在太平洋板块处上述两板块(菲律宾海和欧亚板块)的相互作用和海沟-海沟-海沟三连点的区域构造极其复杂,但是,南海... 在西南日本的南海海槽,菲律宾海板块正以约正交于大陆边缘的方向俯冲到欧亚大陆之下(图1)。尽管其东北部的区域构造即涉及在太平洋板块处上述两板块(菲律宾海和欧亚板块)的相互作用和海沟-海沟-海沟三连点的区域构造极其复杂,但是,南海海槽现在的构造背景是比较简单的。近海中四国盆地的一重要特征是一个古扩张脊,其走向大约相当于板块会聚的方向(图1)。该扩张脊在15-12Ma时停止活动(Qkino等人,1994)。由于它和邻近的大洋地壳已消亡,它们在海沟处的年龄变老,因此俯冲板块是冷的。与俯冲大洋板块年龄有关联的俯冲带的短暂热状态是此次模拟研究的重点。 展开更多
关键词 俯冲带 热状态 俯冲板块 年龄史 日本 西南地区
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不同年龄组脑外伤后综合征的外伤史及影像学观察
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作者 马奎云 王左生 李娟 《河南医学研究》 CAS 1999年第3期228-230,共3页
目的: 观察脑外伤后综合征(PCS) 患者不同年龄组的外伤史、临床表现与影像学改变有无差别。方法: 将观察病例随机分为少年、青年和大青3 组,进行上述3 方面的研究。结果:754 % 是在少年时受伤;头痛、头晕以少年与青... 目的: 观察脑外伤后综合征(PCS) 患者不同年龄组的外伤史、临床表现与影像学改变有无差别。方法: 将观察病例随机分为少年、青年和大青3 组,进行上述3 方面的研究。结果:754 % 是在少年时受伤;头痛、头晕以少年与青年组比例高,神经症群以大青组高( P< 001) ;颈椎压痛3 组无差别;枕神经压痛以青年和大青组高;臂丛压痛以大青组高( P< 001) ,每例均有此3 部5 处11 点中2 处或2 点以上的压痛;X 线:齿突侧方半脱位3组均为1000 % ,伴齿突后脱位及颈椎顺列不良少年组高,生理曲度消失青年组高,C3~4 与C5~6 孔缩小3 组无差异,C4~5 孔小大青组高( P< 001) ;经颅三维彩色多普勒(TCD) 示脑血管痉挛以少、青组高,椎基底动脉系血流缓慢大青组高( P< 001) 。结论: 头痛、头晕与脑血管痉挛有相关性,神经症群与椎基底动脉系血流缓慢有相关性;颈椎等3 部5 处11 点压痛试验有简便、高效、初步的诊断价值;X 线颈椎片至少需拍张口位等4 位片;预防PCS 需加强对少年的管教;PCS 的诊断应个体化,如颈椎性头痛、颈椎性头晕。 展开更多
关键词 压痛 脑外伤后综合征 影像学诊断 外伤年龄
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The natural history of flail chest injuries 被引量:2
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作者 Kamil Naidoo Layth Hanbali Peter Bates 《Chinese Journal of Traumatology》 CAS CSCD 2017年第5期293-296,共4页
Purpose: Flail chest (FC) injuries represent a significant burden on trauma services because of its high morbidity and mortality. Current gold standard conservative management strategies for FC, are now being chall... Purpose: Flail chest (FC) injuries represent a significant burden on trauma services because of its high morbidity and mortality. Current gold standard conservative management strategies for FC, are now being challenged by renewed interest in surgical rib fixation. This retrospective epidemiological study sets out to evaluate FC patients, and quantify the natural history of this injury by studying the injury patterns, epidemiology and mortality of patients sustaining FC injuries admitted to a major trauma centre (MTC). Methods: A retrospective cohort analysis has been conducted at an MTC with full trauma service. All patients (age 〉 16 years) sustaining FC were included. Patient demographics, injury characteristics and inpatient stay information were extracted. Results: Two hundred and ninety-three patients were identified, with a mean injury severity score (ISS) of 28.9 (range 9-75), average age of 56.1 years (range of 16-100), and a male predominance (78%). Road traffic accidents accounted for 45% (n = 132) of injuries, whilst 44% were fall or jump from height (n = 129). Associated lung contusion was present in 133 patients (45%) while 76% of patients were found to have 5 or more ribs involved in the flail segment (n = 223) with 96% (n = 281 ) having a unilateral FC. Inpatient treatment was required 19.9 days (range 0-150 days) with 59% of patients (n = 173) requiring intensive care unit (ICU) level care for 8.4 days (range 1-63) with 61.8% requiring mechanical ventilation (n = 107) for 10.5 days (range 1-54), and Z8g underwent rib fixation with rib plates (n = 23). The mortality rate was found to be 14% (n = 42). A non-significant trend towards improved outcomes in the conservative group was found when compared with the fixation group; ventilation days (6.94 vs 10.06, p = 0.18) intensive treatment unit (ITU) length of stay (LOS) (12.56 vs 15.53, p = 0.28) and hospital LOS (32.62 vs 35.24, p = 0.69). Conclusion: This study has successfully described the natural history of flail chest injuries, and has found a nonsignificant trend towards better outcomes with conservative management. With the cohort and management challenges now defined, work on outcome improvement can be targeted. In addition the comnarahility of results to other studies makes collaboration with other MTCs a realistic vrovosal. 展开更多
关键词 Flail chest Natural history Epidemiology Rib plates
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