Dr. G. M. Hammond[740] gives an account of a personal experiment in strangulation. He sat down; a towel was passed around his neck, and the ends twisted together, making forcible compression of the neck. At first he had a feeling of warmth and tingling, first in the feet, then passing over the entire body; vision partly lost; his head felt as if it would burst; there was confused roaring in ears, like the sound heard on placing the ear to a shell; he remained conscious. In one minute twenty seconds all sensibility was abolished. After a few minutes’ rest a second similar trial was made, with similar results, except that sensibility was lost in fifty-five seconds. A stab with a knife drawing the blood caused no sensation.
Should the subject recover from the immediate effects of the strangulation there may yet be serious secondary results. Among these are convulsions and paralysis; extreme swelling of face, neck, and chest; loss of voice; lesions of larynx and lungs; abscesses. Death may occur suddenly and remotely from one of the sequelæ.[741]
In the treatment of strangulation the first indication obviously is to remove the pressure from the neck. Artificial respiration will probably be required, and may be aided by ammonia applied to the nostrils, tickling of the fauces, and galvanism. Colin[742] states that artificial respiration is useless after cessation of heart-beat. (See the treatment by galvanism under “Suffocation.”) If the body is cold, artificial heat by means of hot bottles, etc. Venesection may be necessary. Colin strongly advises venesection to relieve the distention of the heart. Stimulants and light food are often required.
Limousin[743] recommends the use of oxygen. Cobos[744] experimented on animals by injecting oxygen hypodermically, as a means of artificial respiration. His conclusions are that the oxygen is absorbed and carbon dioxide eliminated in the same place. The oxygen thus introduced causes no trouble. Testevin[745] cures asphyxia by hypodermic injection of ether.
The after-treatment will depend on the after-conditions.
The prognosis is good if there is no serious injury to the neck and treatment is promptly applied.
Post-Mortem Appearances.
The post-mortem appearances in strangulation are external and internal.
The external appearances are of two kinds: those directly due to violence and accident and those due to asphyxia.