[Study on pelvic injury mechanisms in road traffic fatalities according to Young-Burgess classification].

OBJECTIVE: To explore the pelvic injury mechanisms in road traffic fatalities (RTFs) according to Young-Burgess classification and its practical value in forensic medicine. METHODS: Retrospective study was performed on pelvic X-ray radiographs of adult RTFs outside the automobiles in 128 cases. Pelvic injury mechanisms were investigated according to Young-Burgess classification and then were analyzed statistically combined with the real circumstance. RESULTS: The accuracy of pelvic injury mechanism identification using APC subtype (94.1%) and LC subtype (92.9%) were significantly higher than that without using subtypes (63.6% and 70.7%) (P<0.05). LC subtype was helpful to discriminate the direction of force, for example the rear lateral force, anterior lateral force or continuous anterior lateral force. CONCLUSION: Young-Burgess classification discriminated by various methods of medical imaging may be helpful to study the pelvic injury mechanisms and provide reliable reference for road traffic accidents reconstruction.

[Analysis on 27 autopsy cases died of anaphylactic shock induced by mainline].

27 autopsy cases died of anaphylactic shock induced by mainline during 1996-2005 were selected and analyzed. The results showed that most anaphylactic shock induced by mainline were rapid type and more easily happened in individual clinique and lawless clinique, and it could be arisen by either antibiotics or non-antibiotics. In some cases, there may be no pathologic findings by autopsy. So, all the materials must be taken into account for determination the anaphylactic shock, such as drugs, clinic symptom, autopsy findings, and so on.

[Method selection from medical imaging examinations in evaluation of pelvic injury in forensic medicine].

OBJECTIVE: To table a proposal for select using the medical imaging methods to evaluate pelvic injury in forensic field, by studying the structure of pelvis and radiological methods in common use. METHODS: A study of several cases of pelvic injury was done, in which biomechanics and classification of pelvic injury were analyzed, moreover imaging methods were compared with each other, such as fluoroscopy, X-ray photography, computerized tomography (CT) and so on. RESULTS: Four cases of pelvic injury are all multiple injuries, confirmed by X-ray photography and CT examination approvingly. CONCLUSIONS: Authors advocate that pelvic injury mechanism and biomechanics should be considered accordingly, multiple injuries should be attracted notice, so as to select suitable imaging methods to evaluate pelvic injury exactly.

[Determination of the hemoglobin in poisoned blood by spectrophotometery].

OBJECTIVE: In order to establish a objective method of analysis in the case of sulfured hydrogen poison. METHODS: The sulfured hemoglobin of the biomaterials(blood) were investigated by the spectrophotometry. RESULTS: Results showed that sulfured hemoglobin had a specific absorbance peak at 612 nm, it is a linear relationship about the absorbancity to the concentration of sulfured hemoglobin. CONCLUSION: It is possible to mark the poison degree by the spectrophotometery.