Asphyxia

histotoxic hypoxia

high altitude irrespirable gases

CO2 N2 drowning accidental smothering

falling of houses falling in sands

closure of ext. respiratory orifices

hanging

chocking tumour laryngeal oedema

oxygen lack

mechanical interference to passage of air into respiratory passages

causes in the neck

external

throttling foreign bodies pathological

status athmaticus

internal causes in bronchopulmonary tree

bronchiolar obestuction

collapse consolidation pneumothorax haemothorax

cells can't utilize o2 paralysis of respiratory enzymes

stagnant hypoia impaired circulation

manual smothering

strangulation

liquids instead of air

asphyxia

lung pathology trauma

mechanical

haemorrhage uraemia

narcotics

endogenous exogenous electrocaution

central toxic

electrical

interference with the mechanism of respiration poliomyelitis tetanus strychnine curare electrocaution

pathological bacterial toxic peripheral

electrical

status epilepticus traumatic asphyxia

mechanical

hypoxic hypoxia

anemic hypoxia

lack of functioning haemoglobin

shock

congestive heart failure

CO poisoning methaemoglobinaemia

haemoglobin deficiency

heamorrhage haemolysis

cyanide