Obstructive apnea

  • The airway to close the food mass and bulk goods

  • Fig. 11. Obturation of the oral cavity (gag)

    Asphyxia and death can occur from the close of the entry in the respiratory nose and mouth with any objects (Fig. 11), and respiratory tract - foreign bodies, food or vomit, bulk solids or liquids. Common to all these types of mechanical asphyxia is to stop the access of air to the lungs due to the closure (obturation), and why they received the name of obstructive apnea.

    Asphyxia from the close of the respiratory tract

    The entrance to the respiratory tract can be closed with other soft items, often as a result of action of the hands of a stranger, scarf, glove, sometimes by hand and so on, at least - as a result of accident (for example, when a drunken sleep, burying my face in the pillow).
    The causes of death in obturation typical mechanical asphyxia. As with other types of mechanical asphyxia, pronounced "General signs of asphyxia" (acute death).
    If zadaszenia by closing the entrance to the nose and mouth with a soft subjects the victim could not resist, then specific signs to diagnose this kind of death is not detected. In these cases, the expert, stating acute onset of death, cannot justify the conclusion that she came it from mechanical asphyxia and, in particular, due to the seal cavity of the nose and mouth with a soft objects.
    If during the closing breathing holes the victim resists and there is struggle, there can be traces in the form of abrasions, bruises on the skin of the face or neck and mucous membrane of the lips and gums. In rare cases, when the holes of the nose and mouth closed, for example, a pillow, in the nasal passages, mouth and even respiratory tract can be found separate fibers, feathers, parts of feathers. Under strong pressure soft object to face when this item remains on the face after death, one can detect traces, prints fine relief fabrics, and the flattening of the nose and lips and pale the color of these areas in comparison with others.

    The airway to close foreign bodies

    Foreign body (a piece of food, metal, wood, rubber, and glass objects, removable dental prostheses and others) can get into the respiratory tract and is completely or partially close their clearance, eliminating or sharply limiting the access of air to the lungs, leading to hypoxia and death. Such accidents are relatively rare. More rarely, suicide (as a rule, the mentally ill) and murder (young children, the sick).
    Foreign body fall into the Airways during the meal, when reduced or lost sensitivity of the mucous membrane of the respiratory tract in patients suffering from disorders of the act of swallowing disorders bulbar reflexes, as well as the drunk or during the game, when children take in the mouth beads, buttons, grain raw beans or corn, coins, and other objects.
    Levels of implementation of foreign bodies in the Airways may be different.
    The mechanism of death in aspiration of foreign bodies can be twofold. In some cases, develops the typical asphyxia with its phase current, ongoing 4-6 minutes Naturally, this will be a "common signs of asphyxia", quite pronounced. In other cases, death may occur within a few seconds due to a sharp irritation of the larynx spasm and vocal cords, causing irritation verkhneportovaja nerve and reflex cardiac arrest. In these cases, "General signs of asphyxia" no time to develop.
    Diagnostics this form of apnea on the corpse usually is not difficult. It is based on the discovery in the larynx, trachea or large bronchi foreign body, tightly or partially covering their lumen, and there is typically a sign of death from asphyxia.