When a foreign body remains a long time in the larynx, spasmodic cough and croupy breathing usually ensue, expectoration tinged with blood, hoarseness, or complete aphonia, pain, dyspnœa, possibly crepitation and dulness over the lungs. The case may end suddenly in death from closure of the glottis, or the foreign body may pass into the trachea and set up a new train of symptoms, or it may be expelled.
The frequency with which foreign bodies in the pharynx or œsophagus obstruct respiration, and the facility with which they may usually be removed, suggest a careful examination. Otherwise the patient may be treated indefinitely for supposed obstruction in the air-passages. Foreign bodies in the œsophagus have perforated into the trachea, and even the lungs, heart, and aorta.
In complete suffocation death will occur in from two to five minutes (see remarks under Strangulation). Death may also occur instantaneously.
The experiments of the Committee on Suspended Animation[890] showed that when the trachea of a dog was exposed, incised, and a tube tied in, the average time covered by the respiratory efforts after stopping up the tube with a cork was four minutes five seconds; the heart-beat stopping at seven minutes eleven seconds on the average. After four minutes ten seconds it seemed to be impossible for the dog, unaided, to recover. Faure[891] made the following experiment upon a large dog: He fixed a cork in the trachea. At first the dog was quiet; it then extended its neck, parted its jaws, and made efforts as if to vomit; then tried to walk, but its gait was uncertain; fell down and rose up. Its eyes became dull, and finally it fell down on its side, and became convulsed; then after several seconds stretched itself out. The thoracic movements were at first tumultuous, then became rapidly feeble; the heart beating very slowly. At the necroscopy the lungs filled the thorax, were full of thick dark blood and emphysematous. The blood was black and fluid in the left ventricle and arteries, and in the right cavities and veins resembled molasses. Liver darkly congested. There was no mucus in the trachea and no ecchymosis in the lungs. He also (p. 306) tried the experiment upon a large dog of fastening boards against its thorax and tightening them by means of cords. For some minutes it was quiet, but suddenly it became much agitated, stood upon its hind legs, threw itself against the wall, rolled on the ground, and uttered frightful cries; finally fell on its side. There was no movement of the thorax, but the muscles of the neck and belly were in full and rapid action, dry and sonorous râles were heard, and a large quantity of mucus appeared at the nose and mouth. The movements grew feebler, the respirations infrequent, and at the end of thirty-four minutes it was dead. The necroscopy showed the blood black and thick; heart relaxed; lungs red, a little emphysematous, containing but little blood, and on their surface were blackish points and small red spots.
The death of Desdemona (Shakespeare’s “Othello”) has been much criticised. The declaration that she was strangled (or suffocated) does not consist with the symptoms described (see Med. News, Philadelphia, May 1st, 1886, p. 489).
Treatment.
The obvious indication is to search for and remove the obstruction. The means and methods of treatment are fully treated of in surgical works, but may be briefly mentioned here.
Laryngoscopical examination may be necessary. A curved forceps is usually the best instrument for removing the foreign body. A tallow candle may serve to push it into the stomach if there is no bougie at hand. Suction may be used. Sneezing may be brought on by tickling the nostrils; coughing by tickling the glottis; vomiting by irritating the fauces, or by emetic; the body of the subject may be inverted and in this position the fauces may be tickled, or fingers may be passed back into the pharynx. Johnson[892] says that at the moment of inversion the patient should try to take a deep inspiration; this opens the glottis and facilitates the expulsion of the foreign body. The inspiratory current has no appreciable effect in retarding the movement of the foreign body in the direction of gravity.
Noble recommends inversion of the body in new-born infants in which asphyxia may be supposed to be due to anæmia of the brain. Tracheotomy or laryngotomy may be necessary. It may be necessary to administer oxygen. Foreign bodies like beards of grass and fish-heads can be withdrawn only with difficulty because of their sharp projections. Intense suffering and dyspnœa in a robust subject may necessitate venesection. Generally speaking it is better to bring up the foreign body than to push it down into the stomach. Beveridge suggests to blow into the ear, to induce a reflex action and cause expulsion of the foreign body. Cold affusions, artificial respiration, galvanism, frictions of the limbs, artificial heat, stimulants by mouth and rectum, may one or all be needed.
Hamilton[893] says that it is useless to expect good results from electricity if five minutes have elapsed since life appeared to be extinct; Althaus,[894] that three hours after death the muscles will cease to respond to faradization; and Richardson,[895] that a low temperature prolongs the sensitiveness of the muscle.