Mechanical asphyxia Forensic medicine 3 year

Mechanical asphyxia

1. By Prerna Mittal
MECHANICAL
ASPHYXIA

2. DEFINITION
In violent asphyxia death, there is evidence of
application of mechanical force to the body that had
caused interference with the process of respiration

3. HANGING
Hanging is a form of violent death produced by suspending the
body with a ligature around the neck, the constricting force
being the weight of the body or part of body weight .

4. Knot position Typical Atypical
Degree of suspension Complete Partial
Manner of Death Suicidal Homicidal Accidental
Relation to death Antemortem Postmortem
Others
Judicial
hanging
Autoerotic
Hanging
Lynching
Rescue
Hanging

5. Ligature
strangulation
Throttling Mugging
Bansdola Garroting
Palmar
strangulation
STRANGULATION
Strangulation is a violent form of death caused by
constricting the neck by means of ligature or any other
means without suspending the body weight.

6. SUFFOCATION
Environmental suffocation - Deprivation of oxygen in air 1.
Toxic gases CO, CO2 , SO4
Decompression
High altitude
Plastic Bag suffocation 2.
Obstructions of neck other than compression of neck and drowning 3.
External means- Smothering , overlying, traumatic asphyxia
Internal means - Gagging and choking

7. DROWNING
Drowning is a form of asphyxial death where air entry is
prevented due to submersion of mouth and nostrils into
water or any other fluid medium
Dry drowning 1.
Wet drowning- fresh water, sea water2.
Shallow water drowning 3.
Immersion syndrome 4.
Secondary drowning 5.

8. THANK YOU