The first stage of
Decomposition can divide into five stages – fresh, early decomposition, advanced decomposition, skeletonization, and extreme decomposition. The early decomposition phase begins with the onset of skin slippage and hair loss. These changes usually begin from the first day after death to up to five days post-mortem.
Your heart stops beating. Your brain stops. Other vital organs, including your kidneys and liver, stop. All your body systems powered by these organs shut down, too, so that they're no longer capable of carrying on the ongoing processes understood as, simply, living.
Within hours, blood is pulled downwards, causing splotches on the skin. Because the heart is no longer pumping blood around the body, it starts being pulled down by gravity. As the blood pools, patches appear on the skin within 30 minutes of death.
The first organ system to “close down” is the digestive system. Digestion is a lot of work! In the last few weeks, there is really no need to process food to build new cells.
They Know They're Dying
Dying is a natural process that the body has to work at. Just as a woman in labor knows a baby is coming, a dying person may instinctively know death is near. Even if your loved one doesn't discuss their death, they most likely know it is coming.
Agonal breathing or agonal gasps are the last reflexes of the dying brain. They are generally viewed as a sign of death, and can happen after the heart has stopped beating.
For the first few minutes of the postmortem period, brain cells may survive. The heart can keep beating without its blood supply. A healthy liver continues breaking down alcohol. And if a technician strikes your thigh above the kneecap, your leg likely kicks, just as it did at your last reflex test with a physician.
The brain lives on for 30 seconds after death.
For approximately the first 3 hours after death the body will be flaccid (soft) and warm. After about 3-8 hours is starts to stiffen, and from approximately 8-36 hours it will be stiff and cold. The body becomes stiff because of a range of chemical changes in the muscle fibres after death.
Visions and Hallucinations
Visual or auditory hallucinations are often part of the dying experience. The appearance of family members or loved ones who have died is common. These visions are considered normal. The dying may turn their focus to “another world” and talk to people or see things that others do not see.
Most people who are dying feel tired. They may want to sleep more often, or for longer periods. They may want to talk less, although some may want to talk more. They may want to eat less or eat different foods since their stomach and digestive system are slowing down.
Decompensation progresses over a period of minutes even after the pulse is lost. Even when vascular collapse is the primary event, brain and lung functions stops next. The heart is the last organ to fail.
After death, there is are no reflexes of the pupils to light and the cornea also loses its reflex. The cornea of the deceased also become cloudy after two hours of death. Besides that, the pressure in the eyes start to decrease and the eyeballs become flaccid before it they sink into the orbits of the eyes.
Hours Before Death Symptoms
In the final hours of life, your loved one's body will begin to shut down. Their circulatory and pulmonary systems will slowly begin to fail. This may lead to falling body temperatures, but may also cause sudden outbursts.
Putrefaction (4-10 days after death) – Autolysis occurs and gases (odor) and discoloration starts.
US researchers say that as we die, our brainwaves show up in the same way that they do during dreaming, recalling memories or meditating, and our brains remain active and coordinated during and even after we pass.
The human brain rapidly dissolves after death due to the break down of proteins and putrefaction. Decomposition often occurs within minutes after death, which is quicker than other body tissues, likely because the brain is about 80% water.
An isolated brain is a brain kept alive in vitro, either by perfusion or by a blood substitute, often an oxygenated solution of various salts, or by submerging the brain in oxygenated artificial cerebrospinal fluid (CSF).
Hearing may indeed be one of the last senses to lose function as humans die.
They might close their eyes frequently or they might be half-open. Facial muscles may relax and the jaw can drop. Skin can become very pale. Breathing can alternate between loud rasping breaths and quiet breathing.
According to a research most hospital deaths occur between 3am to 4am. This is the time in a day when the body tries to prepare for the activities of the next day while the brain tries to dispose some information to give space to the future happenings of the next day.
Gasping respiration in the dying patient is the last respiratory pattern prior to terminal apnoea. The duration of the gasping respiration phase varies; it may be as brief as one or two breaths to a prolonged period of gasping lasting minutes or even hours.