Obstructive apnea

Closing of the respiratory tract food masses
Closing of the respiratory tract food masses can occur in persons in strong alcoholic intoxication, during General anesthesia, with vomiting or regurgitation, cranial trauma, accompanied by loss of consciousness and vomiting; artificial respiration, when the pressure on the chest and abdomen, infants and children of early age with vomiting and regurgitation.
In all these cases, food mass move from the stomach into the esophagus and mouth, which creates the opportunity, especially in violation of the act of swallowing, their aspiration to the upper respiratory tract.
It should be borne in mind that in itself detection food masses in the upper divisions of the respiratory tract of a corpse is not yet evidence that the death was due to asphyxia, for food mass can enter the Airways in the agonal period or even after death. Posthumous penetration food masses in the respiratory tract occurs when decaying corpse, when a significant number of putrid gas emissions. Recent press on the stomach, causing it to move its contents in the esophagus into the mouth with further passive leaking into the respiratory tract. Therefore, you must install; lifetime or posthumously got food supply in the respiratory tract. About lifetime contact with food masses in the respiratory tract shows the penetration of them not only in the trachea and major bronchi, but in small or very small bronchi and even the alveoli of the lungs. Macroscopically lungs inflated (acute swelling of the lungs), with a bumpy surface, on cuts under pressure from small bronchi and alveoli of removed particles food masses. Histological examination in the alveoli and the bronchioles, small bronchi are identified plant cells, corn starch and other microscopic components of food masses.
When regurgitation possible aspiration of gastric juice, which causes or asthma condition and pulmonary edema (Mendelssohn syndrome). The events developed rapidly and can cause death or complications such as necrotizing pneumonia.
When posthumous hit food masses in the respiratory tract they penetrate only the larynx, trachea and major bronchi.
You must consider the circumstances of death, as well as data from medical records, if the victim received medical assistance.
Closing of the respiratory tract of bulk goods.
To cause airway obstruction, asphyxia and death can aspiration granular or powder tel: cement, sand, cereals, etc., In these cases, the bulk of the body during the autopsy will be detected in the upper divisions of the respiratory tract, perceiving them as deeply as allow the particle size bulk solids and caliber of the respiratory tract. Develops the typical asphyxia from the close of the respiratory tract. When an internal study of the corpse of loose bodies were found in the mouth, respiratory tract (where they fall in the phase inspiratory shortness of breath, clogging the respiratory tract and, if possible, their diameter, penetrate even into the alveoli, which can be confirmed by histological examination). In the process of aspiration some part of bulk solids can zaputyvaetsya, getting into the esophagus and the stomach. The bulk of the body found in the garment, open surfaces of the body. The diagnosis of this type of asphyxia simple. Must be taken into account data of the initial examination of the corpse to the place of its discovery and circumstances of death.

Checklist
1. What kinds of asphyxia from the close of the respiratory tract.
2. What is the Genesis of death from the close of the respiratory tract soft objects? What are the morphological features of this kind of death?
3. What is the Genesis of death at the closing of the respiratory tract food masses of loose bodies? What are the morphological features of this kind of death?
4. What is the basis for differential diagnosis of ante-mortem getting food masses in the respiratory tract?