Death trajectory refers to the pattern of dying when a patient is given a projected death date with limited or no medical recourse for the remaining existence of the individual's life. The death trajectory is dependent on the cause of death, whether it is sudden death, chronic illness, or the steady decline in health due to senescence (aging). Death trajectory is analyzed in two separate aspects: duration and shape. Duration refers to the period of time a patient has to live, which can be anywhere from imminent death to several months. Shape refers to how that duration is then graphed. In other words, the shape is "the course of dying, its predictability, and whether death is expected or unexpected".
Sudden death trajectory
Sudden or premature death occurs when the death of an individual is not perceived to be imminent. In a sudden death trajectory, an otherwise healthy and high-functioning individual will suddenly and unexpectedly die without any observable indications of oncoming demise. People are at a high or normal level of functioning until the moment of death occurs. These types of deaths include fatal accidents and inconspicuous health issues like myocardial infarction or severe stroke. Deaths that align with a sudden death trajectory may happen over the course of a few days or in a matter of seconds.
Chronic malady trajectory
The chronic malady trajectory occurs with types of death caused by autoimmune diseases such as HIV or other incurable illnesses. This process of death is characterized by an overall decline in health accompanied by acute crises and intermittent recoveries. The chronic malady trajectory projects emotional stress or turmoil; the patient may eventually become mentally and emotionally exhausted.
Natural death trajectory
A natural death trajectory is typically a long, steady decline due to old age. In these cases, the death trajectory is based on how the mind and body degenerate, including the speed of organ failure. In these cases, it is much easier to anticipate a person's death.
When someone has an estimated death date and a death trajectory, the patient's caregivers generally cease curative care and proceed to provide palliative or comfort care. Curative care refers to situations where the patient still feels it is possible to use current medical care to recover or become stable enough to carry on with life. Comfort care, or hospice care, is reserved for patients who acknowledge they will not be able to recover.
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