Postmortem Procedures

1. Introduction to Autopsy

• Definition:
  
  

  • Autopsy (autos = self, opsis = view) – "to see for oneself."
    
    

  • Necropsy (necros = dead) – more technically accurate for the dead.
    
    

  • Postmortem (post = after, mortem = death) – interchangeable with autopsy.
    
    

• Ethical Quote:
  
  
  “I will bear in mind always that I am a truth seeker, not a case maker; it is more important to protect the innocent than to convict the guilty.” – Anonymous
  
  
  

2. Types of Autopsies

1. Clinical (Hospital) Autopsy
   
   

   • Purpose: Identify natural causes of death, advance medical knowledge.
     
     

   • Performed by: Pathologists.
     
     

2. Forensic Autopsy
   
   

   • Purpose: Investigate suspicious, violent, or unnatural deaths.
     
     

   • Performed by: Forensic pathologists (medico-legal experts).
     
     

3. Differences Between Clinical and Forensic Autopsies

• Clinical autopsies serve medical research and understanding of disease.
  
  

• Forensic autopsies serve justice and law, requiring legal authority.
  
  

4. Objectives of Medico-Legal Autopsy

• Determine cause and manner of death.
  
  

• Estimate time since death.
  
  

• Establish identity (if unknown).
  
  

• Collect evidence from injuries or foreign bodies.
  
  

• Document trauma and deduce mechanisms.
  
  

• Retain organs/tissues for evidence.
  
  

• In newborns: determine live birth and viability.
  
  

5. Medico-Legal Autopsy Procedure

• Must be conducted by a Registered Medical Practitioner.
  
  

• Requires official authorization (e.g., coroner's order).
  
  

• Conducted in an authorized autopsy suite.
  
  

• Police must identify the body.
  
  

• Should be done in daylight for better visual assessment.
  
  

• Deaths in custody: video recording is mandatory.
  
  

6. Autopsy Legislation, Guidelines & Standards

• Jurisdiction: Varies per country; governed by national laws.
  
  

• Authorization:
  
  

  • Clinical autopsy: family consent.
    
    

  • Forensic autopsy: legal mandate.
    
    

• Standards: Follow national/international forensic standards (e.g., WHO, NAME in the USA).
  
  

7. Procedure for a Forensic Autopsy

A. Pre-Autopsy Planning:

• Review case history and legal documents.
  
  

• Discuss with law enforcement.
  
  

B. Step-by-Step Process:

1. External examination
   
   

2. Internal examination
   
   

3. Ancillary testing
   
   

4. Documentation: Photos, detailed notes, full report.
   
   

8. Examination of the Death Scene

• Importance: Provides contextual evidence.
  
  

• Assess:
  
  

  • Body position
    
    

  • Environmental factors (temperature, humidity)
    
    

  • Presence of weapons or signs of struggle
    
    

9. Property, Clothing & Identification

• Personal Effects: Must be recorded and preserved.
  
  

• Clothing: Check for blood, tears, burns, or signs of struggle.
  
  

• Identification Methods:
  
  

  • Visual confirmation
    
    

  • Dental records
    
    

  • DNA analysis
    
    

  • Fingerprints
    
    

10. Use of Case History

• Sources: Police reports, hospital records, witness statements.
  
  

• Purpose: Directs the autopsy focus.
  
  

11. Precautions in the Autopsy Room

• Infection Risks: HIV, hepatitis B/C, TB
  
  

• PPE: Gloves, gowns, masks, goggles
  
  

• Hazards: Sharps, biohazards, toxic substances (e.g., fentanyl)
  
  

12. Tools Required for Autopsy

• Scalpels, forceps, scissors
  
  

• Bone saw, rib shears
  
  

• Body block, weighing scale
  
  

• Measuring tape, containers for specimens
  
  

13. External Examination

• Clothing: Check for damage and trace evidence.
  
  

• Identification: Tattoos, scars, moles.
  
  

• Body Features: Weight, height, rigor mortis, lividity, decomposition signs.
  
  

• Orifices: Check nose, ears, mouth, anus, vagina for trauma or disease.
  
  

14. Internal Examination

• Approach: Open and inspect thoracic, abdominal, and cranial cavities.
  
  

• Documentation: Weigh organs, take samples, note abnormalities.
  
  

15. Injury Documentation

• Document head-to-toe.
  
  

• Describe:
  
  

  • Size
    
    

  • Site
    
    

  • Orientation
    
    

  • Depth
    
    

• Use metric units.
  
  

• Sexual assault: Inspect carefully and document.
  
  

16. Evisceration

• Systematic removal of internal organs to examine each for disease or trauma.
  
  

17. Examination of Organs

• Key organs: Heart, lungs, liver, spleen, kidneys
  
  

• Weigh, dissect, and inspect for:
  
  

  • Trauma
    
    

  • Disease (e.g., cirrhosis, infarcts)
    
    

  • Infection
    
    

18. Brain Examination

• Remove skullcap, extract brain.
  
  

• Inspect for:
  
  

  • Bleeding
    
    

  • Tumors
    
    

  • Infarcts
    
    

• Record weight and findings.
  
  

19. Autopsy Techniques

1. Virchow’s Technique: Organs removed individually.
   
   

2. Rokitansky Technique: En bloc removal with partial dissection in situ.
   
   

3. Ghon’s Technique: Removal of organ systems in blocks.
   
   

4. Letulle’s Technique: En masse organ removal, best for academic settings.
   
   

20. Ancillary Investigations

• Toxicology: Drugs, alcohol, poisons
  
  

• Histology: Tissue microscopy
  
  

• Microbiology: Infection detection (e.g., TB, HIV)
  
  

21. Autopsy Imaging

• Radiology: X-rays, CT scans
  
  

• Purpose: Detect fractures, bullets, foreign objects
  
  

• Benefits: Non-destructive, useful in decomposed bodies
  
  

22. Forensic Photography

• Used in:
  
  

  • Documentation
    
    

  • Court evidence
    
    

• Use scales, multiple angles, focus on injuries
  
  

23. Autopsy Report Structure

1. Introduction: Case history
   
   

2. External Findings
   
   

3. Internal Findings
   
   

4. Ancillary Tests
   
   

5. Conclusion: Cause and manner of death
   
   

24. Report Details

• Preamble: Identity details
  
  

• Findings: External and internal
  
  

• Opinion: Expert judgment on cause of death
  
  

25. Post-Mortem Artefacts

• Changes after death that may be misleading:
  
  

  • Autolysis of pancreas: Mimics pancreatitis
    
    

  • Neck hemorrhages: Can be mistaken for strangulation
    
    

  • Gastromalacia: Post-mortem stomach rupture
    
    

26. Artefacts in Special Situations

• Heat fractures/hematomas: May simulate trauma
  
  

• Putrefaction: Bloating, color changes—can mimic bruises
  
  

• Hypostasis: Gravity-related pooling, not infarcts
  
  

27. Exhumation

• Definition: Retrieval of a buried body for re-examination.
  
  

• Reasons:
  
  

  • Land development
    
    

  • Insurance/legal claims
    
    

  • Suspicion of foul play
    
    

  • Research
    
    

28. Exhumation Procedure

• Legal permission required
  
  

• Confirm grave location and identity
  
  

• Soil samples may be collected (for poison detection)
  
  

• Coffin must be prepared for safe transport
  
  

29. Autopsy After Exhumation

• Confirm identity again at mortuary
  
  

• Full autopsy may be limited by decomposition
  
  

• Samples from coffin linings and surrounding materials may help
  
  

30. Putrefied Corpse Autopsy

• Challenges: Smell, advanced decay, loss of features
  
  

• Aids: Radiology, entomology, histology
  
  

31. Resuscitation Artefacts

• Injuries from CPR:
  
  

  • Rib fractures
    
    

  • Burns from defibrillation
    
    

  • Airway trauma from intubation
    
    

32. Mass Disasters

• Forensic pathologists:
  
  

  • Identify bodies
    
    

  • Determine cause of death
    
    

  • Assist in criminal investigations
    
    

• Use: DNA, dental records, imaging
  
  

33. Obscure Autopsy

• No clear findings.
  
  

• Further steps:
  
  

  • Toxicology
    
    

  • Cardiac channelopathies
    
    

  • Epilepsy
    
    

  • Genetic tests
    
    

34. End – Questions Section

Sample reflective questions:

1. Difference between autopsy, necropsy, and postmortem?
   
   

2. Objectives of medico-legal autopsy?
   
   

3. How to distinguish cause vs manner of death?
   
   

4. Role of Registered Medical Practitioner?
   
   

5. Key elements of external examination?
   
   

6. Why Rokitansky over Ghon?
   
   

7. Benefits of visiting the crime scene?
   
   

8. Required legal documents?
   
   

9. How to formulate a cause of death opinion?