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Causes of death in case of mechanical damages

Causes of death in case of mechanical damages diverse, but one could highlight the most common.
Injuries incompatible with life, associated with gross trauma to the body: the traumatic amputation of the head, razmytye (crush) head, division of the trunk, extensive destruction of internal organs, the destruction of the spinal cord in the neck and other Named damage occur when exposed parts of the moving transport, falling from a great height, a gunshot injury and other
Blood loss is rich and spicy. Heavy blood loss, death occurs as a result of expiry of a large number of blood ( 50-70 %, i.e. 2,5-3,5 l). Bleeding thus there is relatively slow, even within a few hours.
During the forensic examination of the corpses of persons who died from heavy blood loss, there are characteristic features; dryness and special pale skin, weak signs of cadaveric spots and their slow education, sharp muscle stiffness, anemia, and pale colouring of internal organs, condensed anemic spleen.
Acute blood characterized by the rapid outflow of blood from the main vessels, even in relatively small quantities (200-500 ml). Sharply falling intracardiac pressure and comes acute anemia of the brain. In the study of the corpse celebrate the usual intensity color cadaveric spots, mild muscle stiffness, relative plethora of internal organs, including the spleen. Under the endocardium left ventricle find striped hemorrhage - spot Minakova. They arise due to a sharp drop in pressure in the cavity of the left ventricle and anemic hypoxia of the brain (pereraspredelenie wandering nerve). Often acute blood loss becomes abundant (Fig. 16).
spot Minakova
Fig. 16. Spot Minakova.

Injury and brain concussion is usually accompanied with infringement of an integrity of the bones of the skull, but can occur when no fractures or cracks. More common in traumatisation by blunt objects. Bruising of the brain tissue is usually diagnosed respectively, to the point of impact and at the opposite pole (protivocor). In the white matter of the brain reveal krupnorazmernye hemorrhage. Diagnosis helps the study of the circumstances of the case, the study of the soft tissues of the head and bones of the skull, where can be found traces of external influence. When trauma by blunt objects there are a variety of types of brain injuries. Among them distinguish: contusion, intracerebral hematomas, intraventricular, subarachnoid, subdural and epidural hemorrhage. The latter can be accompanied by the dislocation of the brain. Because the compression of the brain may develop gradually, the possible "lucid interval", during which the victim is able to take action.
basal subarachnoid hemorrhage
Fig. 17. Basal subarachnoid hemorrhage.

A special place is occupied basal subarachnoid hemorrhage, which usually are the result of a kind of physiological state of the organism (painful changes of brain vessels, high blood and intracranial pressure and other). Basal subarachnoid hemorrhage (Fig. 17) can occur in a condition of alcoholic intoxication, physical stress, including in situations associated with the trauma, which significantly complicates the assessment of causality of death from previous events. Besides, there are ways of occurrence basal subarachnoid haemorrhage due to mechanical effects on the human body. For example, when hit with a blunt object into the anterolateral region of the neck (usually in the presence of a special kind of the anatomical structure of the sigmoid sinus), you may experience basal subarachnoid hemorrhage. The differential diagnosis of basal subarachnoid hemorrhages are important morphological and biophysical methods of research of the brain, confirming (or exclude) of his injury and a concussion.
Spinal cord injury usually combined with a spinal injury and, as a rule, are accompanied by traumatic edema, which develops in the next few minutes after the injury.