While ALS survival varies greatly, a feeding tube (PEG) often extends life, with studies showing a median survival benefit of several months to over a year compared to non-users, averaging around 20-30 months from the first clinic visit for PEG users, but some live 10-20+ years, like Stephen Hawking. Key factors influencing survival with a feeding tube include maintaining nutrition, respiratory support (NIV), early intervention, and individual disease progression.
The progression of ALS varies for each person, but on average, the disease advances over two to five years from the time of diagnosis. However, some individuals may experience a slower or more aggressive progression.
Mandatory gastrostomy stage ALS
People with amyotrophic lateral sclerosis (ALS) may progress to the point where they must have a gastrostomy. In this stage, a feeding tube is placed directly into the stomach to deliver enough nourishment and fluids when swallowing becomes seriously compromised.
Late stages
Most voluntary muscles are paralyzed. The ability to move air in and out of the lungs is severely compromised. Mobility is extremely limited; needs must be attended to by a caregiver. Poor respiration may cause fatigue, fuzzy thinking, headaches, and susceptibility to pneumonia.
With ALS, you may first have weakness in a limb that occurs over a few days or, more often, a few weeks. Then a few weeks or months later, weakness develops in another limb. For other people, the first sign of a problem may be slurred speech or trouble swallowing. As ALS progresses, more and more symptoms are noticed.
The first sign of ALS is often weakness in one leg, one hand, the face, or the tongue. The weakness slowly spreads to both arms and both legs. This happens because as the motor neurons slowly die, they stop sending signals to the muscles. So the muscles don't have anything telling them to move.
As the muscles stop receiving messages sent from motor neurons, they waste away (atrophy) and no longer work. The senses of sight, touch, hearing, taste and smell aren't affected by ALS because they get messages from the brain and spinal cord through sensory neurons, not motor neurons.
Many also experience an inability to talk, eat, or drink and require a feeding tube. The most common cause of death for ALS patients is respiratory complications caused by an inability to breathe. Heart complications are also possible in certain cases.
During 1 to 2 weeks before death, the person may feel tired and drained all the time, so much so that they don't leave their bed. They could have: Different sleep-wake patterns. Little appetite and thirst.
Praying, talking with someone from one's religious community (such as a minister, priest, rabbi, or Muslim cleric), reading religious text or listening to religious music may bring comfort. Family and friends can talk to the dying person about the importance of their relationship.
For patients with normal overnight oximetry, median survival was 8.54 months (3.88–13.21 months), compared to 4.80 months (1.20–8.39 months) in the abnormal oximetry group (p50. 03; relative risk 1.97). It is concluded that RIG and PEG are equivalent in terms of post-procedure survival.
Consider stopping tube feeding when the risks or burdens of the feeding are greater than possible benefit. Among the burdens of tube feeding is the possible discomfort that may be caused by the tubes. In addition, the feeds themselves may cause diarrhea, reflux, aspiration , and fluid overload.
Eventually, swallowing enough food and drink to stay healthy may become impossible or impractical. When this happens, a feeding tube can be used to ensure you get the nutrition you need. You can learn more about ALS nutrition and feeding tubes here.
ALS is triggered by a complex mix of genetics, environmental factors, and lifestyle, with most cases being sporadic (random) but about 10% being familial (inherited) due to gene mutations like C9orf72 or SOD1. Potential environmental triggers include smoking, exposure to heavy metals/toxins, and military service, while underlying mechanisms involve oxidative stress, protein buildup, and excitotoxicity damaging motor neurons.
Step 4: Severe Weakness and Limited Mobility
At the fourth stage, most muscles are significantly weakened, and patients may require a wheelchair full-time as well as help with daily activities. Bulbar symptoms also begin to worsen with increased difficulty swallowing as muscles in the mouth and throat deteriorate.
ALS life expectancy
The average life expectancy after diagnosis is two to five years, but some patients may live for years or even decades. Approximately 50% of people diagnosed with ALS live at least three or more years after receiving their diagnosis.
What other signs might there be that death is near? One is 'terminal agitation' or restlessness. This often appears as a need to get out of bed, agitated behaviour or commonly plucking of the sheets or 'knitting' of the hands. They might reach out as if towards something or somebody.
But the body tries valiantly. The first organ system to “close down” is the digestive system.
When death is near: Signs and symptoms
Hospice Eligibility for ALS
Patients are eligible for hospice care when a physician makes a clinical determination that life expectancy is six months or less if the terminal disease runs its normal course. In end-stage ALS, two factors are critical in determining prognosis: ability to breathe and ability to swallow.
Respiratory failure is the most common cause of death among patients with ALS, due to muscle paralysis, yet other comorbid conditions such as cardiovascular disease may contribute to ALS deaths.
And, while the average survival time is three years, about 20% of people with ALS live five years, 10% survive 10 years and 5% live 20 years or longer. Progression isn't always a straight line in an individual, either. It's common to have periods lasting weeks to months with very little or no loss of function.
Specifically, an area in the brain called the primary motor cortex was more likely found to be damaged during the progression of ALS when associated with upper motor neuron lesions. Additionally, inflammation in certain areas of the brain, such as the brain stem, has been linked to upper motor neuron lesions.
Risk factors for ALS include: Age: Although ALS can happen at any age, symptoms most commonly develop between the ages of 55 and 75. Biological sex: Men are slightly more likely to develop ALS than women. But at older ages, men and women are equally likely to be diagnosed with ALS.
So, it's either weakness or difficulty with speech and swallowing or breathing.” “ALS typically presents with painless, gradually progressive asymmetric motor weakness. So, if somebody comes and tells me they have pain and weakness,” then there is no worry about ALS because pain doesn't fit with this disease, he said.