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1106 Forensic Pathology Lecture 2.docx

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Forensic Science
Hisham Ragab

Forensic Pathology Lecture 2 - DEATH - Cause, Manner & Mechanism of Death - Delayed Death - Medicolegal Cases - The Objectives of a Medicolegal Examination - The ForensicAutopsy VersusAn External Examination - The Extent of theAutopsy - Difference between Hospital & MedicolegalAutopsy - Identification of Bodies - TheAutopsy Report DEATH - Death is the permanent termination (cessation) of the biological (vital) functions that sustain a living organism  CVS – Syncope -- Circulatory Failure  RS –Asphyxia -- Respiratory Failure  CNS – Coma -- CNS Failure (Brain Death) - Death of the individual is termed Somatic or Clinical death - But death of the tissues (cells) is termed Molecular or Cellular death - The time between somatic and molecular death is called Molecular life Manner of Death - Violent deaths: accidental, homicide, suicide - Natural - Unexplained (undetermined) Cause, Manner & Mechanism of Death - Cause of death: any injury or disease that produces a physiological derangement in the body that results in the individual death - Mechanisms of deaths: is the physiological derangement produced by the cause of death that results in death Delayed Death - Most peoples fall to realize that violent deaths are retained even if there is a long delay between injury & death - A45 years old man dies for 3 weeks after surgery to repair a single penetrating stab wound – in the right side of chest – he received during a fight. Postmortem examination revealed that the repaired wound was intact but there was an extensive bronchopneumonia - What are the cause, mechanism & manner of death? - The cause death: penetrating stab wound in the right side of chest - The manner of death: homicide - The mechanism of death: penetrating stab wound – surgery to repair the wound – staying in bed after surgery – hypoventilation of the lung + infection – extensive bronchopneumonia (postoperative complication) – failure of the respiratory mechanism – death (note intact causal chain) Medicolegal Cases - Violent deaths - Sudden & unexpected deaths - Deaths have no attending physician - Death that are suspicious, i.e. may be violent The Objective of a Medicolegal Examination - Identification of the deceased - Identify cause & Mechanism of death - Determine the manner of death - Interpretation of injuries - Collect trace evidence The Forensic Autopsy vs. an External Examination It is not necessary to perform an autopsy in al
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