What happens when someone dies? In time, the heart stops and they stop breathing. Within a few minutes, their brain stops functioning entirely and their skin starts to cool. At this point, they have died.
Physical signs
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.
Consciousness fades. Often before death, people will lapse into an unconscious or coma-like state and become completely unresponsive. This is a very deep state of unconsciousness in which a person cannot be aroused, will not open their eyes, or will be unable to communicate or respond to touch.
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.
One of the most common and well-known near-death experiences for those who die and come back is seeing a bright, white light. This white light isn't something to be afraid of. In fact, most report it coming with a sense of peace or even happiness. Many have speculated about the symbolism behind the bright light.
One of the wildest innovations is “living funerals.” You can attend a dry run of your own funeral, complete with casket, mourners, funeral procession, etc. You can witness the lavish proceedings without having an “out-of-body” experience, just an “out-of-disposable-income” experience.
You May Poop and Pee Your Pants
While rigor mortis sets in eventually, as soon as you die, every muscle in your body relaxes. That includes the sphincters that are in charge of keeping your bladder and bowels on lockdown, says Jorgenson. So if there is anything to expel, it could possibly seep out.
Gasping is also referred to as agonal respiration and the name is appropriate because the gasping respirations appear uncomfortable, causing concern that the patient is dyspnoeic and in agony.
Brain activity supports that a dying patient most likely can hear. Even if awareness of sound cannot be communicated due to loss of motor responses, the value of verbal interactions is measurable and positive. Patients appear comforted by the sounds of their loved ones (in person and by phone).
Many people do not see or track things well when they are nearing the end of life. Their eyes may appear glazed or may not close all the way. Some people experience a brief surge in energy in the hours or days before death. This may last from a few minutes to several hours.
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.
In the last hours before dying a person may become very alert or active. This may be followed by a time of being unresponsive. You may see blotchiness and feel cooling of the arms and legs. Their eyes will often be open and not blinking.
Within one hour: Primary flaccidity (relaxation of muscles) will occur almost immediately followed by pallor mortis (paling of the skin). At two to six hours: Rigor mortis (stiffening of muscles) will begin. At seven to 12 hours: Rigor mortis is complete.
The patient's bowel movements may stop entirely, or they may become incontinent. Their breathing may become shallow and irregular, with long pauses that grow frequent as death approaches. There may also be sounds of chest congestion and throat rattling in the last hours.
The brain and nerve cells require a constant supply of oxygen and will die within a few minutes, once you stop breathing. The next to go will be the heart, followed by the liver, then the kidneys and pancreas, which can last for about an hour. Skin, tendons, heart valves and corneas will still be alive after a day.
In time, the heart stops and they stop breathing. Within a few minutes, their brain stops functioning entirely and their skin starts to cool. At this point, they have died.
“First hunger and then thirst are lost. Speech is lost next, followed by vision. The last senses to go are usually hearing and touch.”
It can be upsetting or worrying for those around the person to hear their noisy breathing. But it's unlikely to be painful or distressing for the person who's dying. Often they will be unconscious or won't be aware of it.
The end-of-life period—when body systems shut down and death is imminent—typically lasts from a matter of days to a couple of weeks. Some patients die gently and tranquilly, while others seem to fight the inevitable. Reassuring your loved one it is okay to die can help both of you through this process.
One of the breathing rhythm changes is called Cheyne-Stokes breathing; a cycle of anywhere from 30 seconds to two minutes where the dying person's breathing deepens and speeds up, then gets shallower and shallower until it stops.
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.
However, while corpses aren't likely to scream or yell, they are likely to make noises such as moans, groans, hisses, and grunts.
For the most part, however, if a non-embalmed body was viewed one year after burial, it would already be significantly decomposed, the soft tissues gone, and only the bones and some other body parts remaining.