Post by Nessie on May 23, 2022 11:08:17 GMT
You need to learn about livor mortis aka lividity;
www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/livor-mortis
"livor mortis, also referred to as lividity, postmortem hypostasis, vibices, and suggilations"
"When death occurs, circulation stops and the blood begins to settle, by gravity, to the lowest portions of the body. This results in a discoloration of those lower, dependent parts of the body. Although beginning immediately, the first signs of livor mortis are typically seen about 1 hour following death, with full development being observed 2 to 4 hours following death"
"Carbon monoxide poisoning produces a persistent cherry red color and cyanide poisoning will also cause the red color to persist"
"changing the position of the body can result in resettling of the blood in newly dependant areas"
Lividity aka livor mortis forms after death, as the blood pools, and in CO poisonings, it is cherry red. It takes hours to form and moving the body will delay formation. This next part will be too complicated for you to understand, and it says what you do not want to hear;
"The typical description of a decedent with CO poisoning is that he/she “looks healthy.” That is, the body retains a normal in vivo hue due to the continued presence of unutilized oxyHb. As livor may be subtle or unapparent early and/or in darkly pigmented bodies, other easily visualized vascular tissues can be assessed. The typical bright-red color is most readily appreciated in the mucosa of the mouth (Figure 13) and the conjunctiva. Fingernails are an excellent site to assess, as the nail beds are usually prominently cyanotic after death. With sufficient COHb, the nail beds appear pink."
When people die of CO, they are not showing bright cherry red, just healthy looking. The bright cherry red is inside the mouth, or the fingernail beds. So, it is not obvious.
www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/livor-mortis
"livor mortis, also referred to as lividity, postmortem hypostasis, vibices, and suggilations"
"When death occurs, circulation stops and the blood begins to settle, by gravity, to the lowest portions of the body. This results in a discoloration of those lower, dependent parts of the body. Although beginning immediately, the first signs of livor mortis are typically seen about 1 hour following death, with full development being observed 2 to 4 hours following death"
"Carbon monoxide poisoning produces a persistent cherry red color and cyanide poisoning will also cause the red color to persist"
"changing the position of the body can result in resettling of the blood in newly dependant areas"
Lividity aka livor mortis forms after death, as the blood pools, and in CO poisonings, it is cherry red. It takes hours to form and moving the body will delay formation. This next part will be too complicated for you to understand, and it says what you do not want to hear;
"The typical description of a decedent with CO poisoning is that he/she “looks healthy.” That is, the body retains a normal in vivo hue due to the continued presence of unutilized oxyHb. As livor may be subtle or unapparent early and/or in darkly pigmented bodies, other easily visualized vascular tissues can be assessed. The typical bright-red color is most readily appreciated in the mucosa of the mouth (Figure 13) and the conjunctiva. Fingernails are an excellent site to assess, as the nail beds are usually prominently cyanotic after death. With sufficient COHb, the nail beds appear pink."
When people die of CO, they are not showing bright cherry red, just healthy looking. The bright cherry red is inside the mouth, or the fingernail beds. So, it is not obvious.
