Studies on Relationship between Sudden Infant Death and Asphyxia based on the Evaluation of Rebreathing Potential on Infant Bedding

使用动物模型对一些婴儿被褥上的再呼吸潜力进行了评估，该潜力被认为与婴儿猝死有关。结果与前人的机械模拟呼吸模型结果基本一致。由于技术简单，机械模拟呼吸模型比动物实验模型更适用于评估再呼吸潜力。此外，还对包括死亡现场在内的五起死亡案例进行了分析。在两起案件中，疑似虐待儿童，但尸检未能找到死因。即使不能对虐待定罪，疑似病例也不应被归类为SID(婴儿猝死综合症)，而应归类为“未知”或“未确定”。卧床重复呼吸潜伏期检查不能直接解释婴儿死亡，但卧床可能会增加婴儿猝死的风险。为了接近实体，我们法医病理学家应该收集和保存所有尸检结果的记录，包括偶发损害，与各个领域的专家进行大量讨论，并对每个病例的死亡现场进行客观评估。

Evaluation of rebreathing potential which was thought to be related with sudden infant death on some infant bedding was performed using an animal model. The results were similar to those with mechanical simulated breathing model in the former study. Because of its technical simplicity, the mechanical simulated breathing model would be more useful for evaluation of the rebreathing potential than the animal experimental model. In addition, five death cases including the death scene were analyzed. In two cases, child abuse was suspected, but the autopsy failed to find the cause of death. Even if one is unable to get a conviction of abuse, suspected cases should be classified not as SIDS (sudden infant death syndrome) but as "unknown" or "undetermined." The examination on rebreathing potential of bedding could not directly explain the infant deaths, though prone sleeping on some bedding might increase the risk of sudden infant death. To approach the entity, we forensic pathologists should collect and reserve the records of all autopsy findings including incidental lesions, have much discussion with the various fields of specialists, and evaluate the death scene objectively in each case.