Kindai University Hospital
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〈Articles〉Distress of Kinki University medical students and role of student counseling room
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〈Articles〉Psychiatric care and counseling in Nara Prefecture General Medical Center
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Attitude of Students in Teacher Training Course Toward Student and Career Guidance and Its Issue
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〈Originals〉 Petrous bone hemorrhage : specificity and pathogenesis
No full textpublisher[Abstract] Whether or not temporal petrous bone hemorrhage is drowning/asphyxia specific or not has been controversial. This issue was investigatedby analyzing 151judicial autopsy cases using semi-3-dimensional microscopic observations of the bones. This systematic evaluation revealed the hemorrhages in all 151cases, not only of the drowning/asphyxia group, but also of the others. Therefore, it was concluded that the hemorrhage was non-specific. Venous congestion was also one of the most consistent features of the bones. During agonal periods, hypoxia seemed unavoidable. The "hypoxic pulmonary vasoconstriction" increases the central venous pressure. Even in the agonal periods, arterial blood flow to the brain is relatively maintained by cerebral autoregulation. In addition, the small petrous veins do not have sufficient supporting structures. These mechanisms might contribute to the pathogenesis of perimortal petrous bone hemorrhage. There is no single sign which proves drowning/asphyxia as the cause of death.The judgment about the cause should be based on the overall assessment
