1 / 5

Estimation of Time of Death and Postmortem Reactions in Forensic Investigation

This article covers early postmortem changes such as lividity, rigor mortis, and cooling, along with forensic entomology and special cases. Learn about factors affecting the accuracy of thermal descent equations and corrective factors like body mass and temperature. Explore postmortem reactions like Zsako and pupil reactions, chemical reactions, and methods like stomach emptying and chemical tests. Discover how scene information and tests like sperm motility can provide crucial clues in determining the time of death.

lsenter
Download Presentation

Estimation of Time of Death and Postmortem Reactions in Forensic Investigation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Estimation the time of death Early postmortem changes (Lividity-rigor mortis-Cooling) Postmortem reaction forensic entomology Other special information

  2. examples • Body is warm; flaccid – time < 3 h • Body is warm; stiff – time 3-8 h • Body is cold ; stiff – time 8-36 h • Body is cold; flaccid – time >36 h

  3. cooling • تصبح معادلات الهبوط الحراري غير دقيقة في : - death due to infection - ambient temperature > 36 - freezing the body • العوامل الأساسية المؤثرة : - b0dy mass - - ambient temperature - body temperature • عوامل التصحيح : - clothes – humidity – wind ……………

  4. Postmortem reaction • Zsako reaction - stopping reaction 2-2.5 h - stopping irregular reaction 8 h • Pupil reaction - regular 5h – irregular 7-18 h • Chemical reaction - positive -5-7 h

  5. Other methods • Empting stomach : 3-6 h • Information of scene ( light – clothes –hair) • some chemical & enzymic tests - k : t= ( k x 3.23) x 8.2 - sperm : moving – time > 10 h

More Related