Suffocation, death show what phenomenon?

Body signs of suffocation, characterized as dead can be divided into internal signs.
1, characterized as dead.
(1) facial swelling and cyanosis. As the pressure on the neck, jugular venous pressure was off, and the carotid artery, promote incomplete closure pulse pressure, blood flow to the head only, but can not return to the heart, the results of blood Yu head, facial swelling. Increase in reduced hemoglobin in the capillaries, so that facial bruising, lips, nails and other cyanosis. This phenomenon more common in strangle, strangled and atypical constriction dead body. The typical digital cable dead body before, the complete interruption of blood flow because blood vessels, so the face was pale.
(2) eye conjunctival hemorrhage. As the head and face a high degree of depression of blood vessels, due to lack of oxygen to the capillary endothelial cell degeneration, increased permeability, the pressure is increased, coupled with the membrane under the eyes of organizations with relatively loose, so strangled or strangled bodies of two upper and lower common curved hole near the eyelids together film inside and outside the Department and to the corner office with a small tip, as big as a millet, varying numbers of red or reddish brown spotting, blood spots can be integrated into serious; face, neck skin and sometimes the size is not visible such as haemorrhagic points; canal wall, nasal cavity, etc., sometimes visible bleeding. content from pregnancy question and answersRenting&RealEstate
(3) jugular vein engorgement. As the head blood flow obstruction, jugular vein blood can be extreme depression, the phenomenon of the neck superficial veins engorgement.
(4) Livor mortis appeared early and was dark purple. Blood was due to suffocation body hydraulic-like, never falling, Livor mortis occurs rapidly; as breathing stopped, the body's cells are still capable of gas uptake from the blood, significant increase in reduced hemoglobin in the blood, so Livor mortis dark purple; sometimes In the non-poor parts, such as sit-down when the body of the clavicle back of knee, there may be scattered haemorrhagic points.
(5) with urine and semen. Of difficulty in breathing, due to smooth muscle contraction, may compress the rectum, bladder and seminal vesicles, etc., it can be excreted with urine and semen phenomenon; can also be found in the mouth and nose around Xianshui, nose and other secretions out.
(6) cold dead slow. General choked to death quickly, the original body has not lost in the process of choking spasms, as muscle activity increases heat production also increased, coupled with blood flow was like, it is dead cold slower. pregnancy question and answers
2, internal signs
(1) dark red blood flow like. Dead less blood oxyhemoglobin, reduced hemoglobin and more, it is dark red. Blood flow like the reason was not very clear, may be related to the following types of factors:
① serum memory of plasminogen, in mental stress, fear, shock, choking death case, it becomes activated fiber Plasmin, the dissolution of blood coagulation.
② increase of heparin to prevent blood clotting.
③ reduce the role of thrombin.
Therefore, suffocation death of the body after death one hour autopsy, blood was not completely solidified state; three hours after the death of anatomy, mostly flow-like. But the body of the deceased can also be emergency happens.
(2) subserosal and submucosal hemorrhage. Common dead heart, lung surface ranging in size subserosal bleeding, children may see this thymus serous bleeding, collectively known as the tower carved's patches. The area between the surface more in the lung, pulmonary bottom, behind the heart, coronary week: Wai and pericardium connection. In addition, the gastric mucosa, bladder mucosa and other soft meninges and sometimes visible bleeding. pregnancy question and answers
However, certain diseases, such as sepsis, hemophilia, sudden death and the dead bodies of some poisoning can also see this phenomenon.
(3) Yu visceral blood. As the chest increased negative pressure, pulmonary capillary congestion, back to the right heart chamber blood flow can not enter the left heart chamber smoothly, and the encouragement of the plot. As the determined cavity blood, the blood of visceral organs can not return to the right heart, therefore, appear determined, lung, brain, liver and kidney blood Yu. Spleen is the body's blood storage organ, the body of oxygen, the occurrence of compensatory contraction, release of blood, participate in circulation, it was shrunken anemia. This phenomenon occurred during slow suffocation of the body.
(4) pulmonary emphysema. Inspiratory dyspnea in the period, due to increased negative pressure chest, night when the inhalation of air, so that some alveolar expansion, the formation of emphysema, alveolar rupture and thus, can form interstitial emphysema. At this time, the Ministry of dark red pulmonary congestion, the Department of white inflatable
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Head and face may be congestion, cold dead slow, or hands grasping objects, signs of struggle before his death there, eyelid eyelashes touch the outer membrane may be a bit like bleeding chest, lung anatomy may have pulmonary edema, or bullae. If ill frail, might suffocate obvious signs of hypoxia similar type of suffocation.

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