Tardieu's spots and asphyxia--a literature study

Subpleural, epicardial and pericranial ecchymoses have been described in cases of suffocation since the 18th century. In the 19th century, great diagnostic importance was attributed to ecchymoses. Tardieu was the most determined defender of the specificity of ecchymoses for suffocations. He thought that he could diagnose violent suffocation by means of ecchymoses and claimed that he was able to differentiate violent suffocation from other unnatural causes of death (hanging, choking, strangulation, and drowning). Other physicians, among them numerous German medical examiners, proved Tardieu's opinions wrong by means of observations and animal studies. The most dedicated disputant against Tardieu's false doctrines was Liman. According to today's knowledge of pathophysiology, the haemorrhages concerned cannot have a specificity for suffocation or even a specific form of suffocation. Therefore, the confusing term of "suffocation haemorrages" should be avoided.     

Visualization of postmortem chondrocyte damage by vital staining and confocal laser scanning 3D microscopy

The present study was designed to investigate whether the combination of vital dyes [calcein acetomethyl ester and ethidium homodimer (LIVE/DEAD Viability/Cytoxicity Kit)] together with confocal laser scanning 3D microscopy was a suitable process to detect postmortem chondrocyte damage, and whether this process could be used to establish postmortem interval. Human knee cartilage from 13 autopsies (postmortem interval from 1 day to 2.5 months) was incubated with the two dyes. The chondrocytes revealed intense staining according to their vitality. For those cases that were stored mainly at 4 degrees C there was a vitality of approximately 88 to 96% within the first 4.5 days, which decreased to 58% after 6 days and to 9% after 1.5 months. After 2 days and 14 days at summer temperatures there were 70% and 8% vital chondrocytes respectively. Three of the 13 cases showed that altered body and storage conditions limited the efficacy of the method. Initial data suggested a time and temperature dependent increase in cell breakdown. Under stable cooling conditions the use of vital dyes and confocal laser scanning 3D microscopy to measure chondrocyte loss may be a valuable tool for estimating the postmortem interval.