Mechanical (Violent) asphyxia
- Interference of respiration by mechanical means constitutes mechanical or violent asphyxia.
- Mechanical asphyxia—this is due to mechanical interference to respiration, e.g. hanging, strangulation, throttling, smothering, choking, drowning, etc
Mechanical asphyxia could be of following types depending upon the respiratory block.
- Compression/ constriction of the neck, e.g. hanging, strangulation, throttling, etc.
- Blocking external orifices of respiration, i.e. mouth and/or nostrils, e.g. smothering, overlying, suffocation, gagging, etc.
- Impaction of foreign bodies in respiratory tract, e.g. choking
- Compression and mechanical fixation of the chest and abdomen preventing the respiratory movements, e.g. traumatic asphyxia/crush asphyxia.
- Inhalation of fluid into the respiratory tract, e.g. drowning.