Breathing support
Using BiPAP and Non-Invasive Ventilation at Home
Non-invasive ventilation, delivered at home by a bi-level machine most families call a BiPAP, supports tired breathing muscles through a mask instead of a tube. Your job as caregiver is the mask fit, the cleaning and the daily troubleshooting. Pressures, mode and hours belong to the pulmonologist and the respiratory therapist, never to you. A leaking mask is the most common reason people abandon this equipment.
Show guidance for someone who
Before you start
- Machine is on a working outlet, not a switched power strip that someone can turn off at the wall
- Humidifier chamber is filled to its line, with the water type your own manual specifies
- Tubing is connected at both ends, unkinked, and the air filter is in place and not gray with dust
- Mask cushion is clean and dry, and the headgear is set to the marks your respiratory therapist left
- Skin over the nose bridge and cheeks is intact and dry, with no red mark left from last night
- The person is positioned as their team directed, and knows you are about to put the mask on
The procedure
Tell them what you are about to do
Say it out loud before the mask comes near their face, and wait for them to be ready.
The pressure sensation and the closed-in feeling of the mask are among the common reasons people struggle with this equipment. Someone who is expecting the first breath copes with it far better than someone startled by it.
Switch the machine on
Start it and let air run through the tubing. If your model is set to start automatically on the first breath, follow the order in your own manual instead.
You cannot judge a seal without pressure behind it. A mask that looks perfect on a silent machine can blow open the moment the pressure arrives.
Rest the cushion against the face first
Hold the mask lightly in place with your hand, with no straps on yet, and look at where the cushion sits.
This is how you tell a wrong size from a wrong tension. If the cushion does not sit right in your hand, no amount of strap will fix it and the mask needs to be re-sized by the respiratory therapist.
Bring the headgear over the head
Slide the straps back over the crown rather than dragging them up from the chin, keeping hair and glasses arms clear of the seal.
Tighten only until the leak stops
Take up the lower straps first and then the upper ones, evenly, a little at a time, and stop at the point the noise stops.
Pulling tighter is the reflex and it is the wrong one. Reviews of long-term ventilation describe excessive pressure from the mask, squeezing the tissue underneath, as the most important risk factor for facial skin injury.
Feel around the whole seal
Run the back of your fingers slowly around the edge of the cushion and find any air escaping.
Leak is not just noise. Air escaping past the seal or out of the mouth dries the lining of the nose, which raises nasal resistance and drives still more leak, a cycle described in the long-term ventilation literature.
Ask whether air is reaching their eyes
Ask directly, because they may not think to mention it, and note it if the answer is yes.
The NIV4MND clinical toolkit treats eye irritation as a leak problem first. Air in the eyes almost always means the top of the cushion is not sealing, not that there is anything wrong with the eyes.
Check the skin after the first hour
Lift the cushion clear and look at the nose bridge, the cheekbones and the chin, then put it back.
Modeling work on full face masks found the highest pressure zones over the nose bridge and the areas either side of the nose, which are exactly the places with the least tissue between skin and bone.
Use caution
- Never change pressures, mode, ramp or the prescribed hours. Those belong to the pulmonologist and the respiratory therapist, who set them from testing you cannot do at home.
- Tighter straps do not fix a leak from a badly sized mask. They trade a leak for a pressure sore.
- Do not add oxygen to the circuit unless it has been prescribed. MND Australia notes that high levels of oxygen in the blood can affect the natural drive to breathe.
- Air in the stomach, dry mouth and dry eyes are recognized side effects. Report them rather than working around them, because the team can act on them.
- The FDA has stated that devices claiming to clean or sanitize this equipment with ozone gas or ultraviolet light have not been FDA authorized.
Stop and get help
- Broken skin, a blister, or a dark or purple mark anywhere the mask touches
- A new morning headache, new daytime sleepiness, or new confusion
- They take the mask off and cannot settle their breathing back down without it
- Secretions they cannot clear, or coughing and choking under the mask
- An alarm that keeps returning after you have reseated the mask and checked the tubing
Print the eight-step checklistOne page, large type, tape it to the wall beside the machine.
Why it is started before anyone feels they need it
Weak breathing muscles announce themselves at night long before they announce themselves in the day. The NIV4MND clinical toolkit lists disturbed or non-refreshing sleep, early morning headaches, daytime sleepiness, waking to pass urine, difficulty lying flat, breathlessness and a poor cough as the signs to watch.
The same toolkit is blunt about why waiting for symptoms fails. It states that the signs can be subtle and that patients may have none of them despite requiring ventilation, and that people with other lung conditions often put the symptoms down to that instead. MND Australia advises asking about breathing management soon after diagnosis, even with no noticeable change.
Starting early is also a practical matter rather than only a clinical one. It gives everybody time to trial masks, to build up tolerance and to arrange equipment before it is urgently needed, which is the reason clinical services push for early referral.
What the research says, and what it does not
This page will not tell you what to decide. It is worth knowing what clinicians are weighing, because it comes up in every conversation with the respiratory team.
An AHRQ evidence review of home non-invasive positive pressure ventilation reported that in neuromuscular disease, bi-level ventilation compared with no device was associated with reduced mortality and better quality of life, both at low strength of evidence. AHRQ is the US federal Agency for Healthcare Research and Quality, part of the Department of Health and Human Services.
A 2006 randomized controlled trial published in Lancet Neurology by Bourke and colleagues reported a median survival benefit of 205 days in participants with better bulbar function.
The same trial reported no survival benefit in the group with severe bulbar impairment, though sleep-related symptoms still improved. Those are study findings, not promises, and the balance for any one person is a conversation with their own pulmonologist.
What the equipment does not do is worth saying plainly. MND Australia states that non-invasive ventilation gives relief from symptoms such as fatigue, breathlessness and disturbed sleep, but does not prevent progressive weakening of the respiratory muscles. It supports breathing. It does not treat the underlying condition.
Masks, and why fit decides everything
The machine is the reliable part. The mask is where this succeeds or fails. A review of long-term ventilation describes unintentional leak, either between the face and the mask or out of the mouth, as a cause of poor synchrony between person and machine, self-triggering, and disturbed sleep.
NIV4MND recommends that a minimum of two mask interfaces are given to each person, and that a range of types and sizes is tried to find the one that suits them. If you were sent home with one mask and it is not working, that is a reason to call, not a reason to endure it.
| Interface | What it offers | Watch for |
|---|---|---|
| Nasal mask | Covers the nose only. Leaves speech, eating and clearing the mouth easier | Nasal dryness and irritation, and leak out of the mouth |
| Nasal pillows | Sits in the nostrils, least contact with the face | Soreness inside the nostrils |
| Full face, or oronasal | Covers nose and mouth, so mouth leak is not an issue | Harder to speak, eat and clear secretions, and the highest facial pressure zones |
| Total face mask | Covers nose, mouth and eyes. Used for people who cannot close the mouth | Rarely used at home, and raises concern about vomiting under the mask |
| Mouthpiece | Daytime option, no skin contact to break down | Needs enough lip strength to seal around it |
Which of these is right is a respiratory therapist’s judgment, and it changes over time. A chin strap or a nasal pillow mask is sometimes tried where safety or leak is the driver. Ask for the trial rather than deciding at home.
Skin on the nose bridge
Nose bridge ulceration is described in the ventilation literature as a relatively common complication, occurring in up to 10 percent of ventilated patients. Modeling of a full face mask found the strongest pressure zones over the nose bridge and the areas beside the nose, which is where the skin sits almost directly on bone.
Leak and skin damage are the same problem, not two problems. In one hospital study of non-invasive ventilation, high mask leak was the only factor that stayed significantly associated with device-related pressure injury after the other variables were accounted for. Chasing a leak with strap tension is how a sore nose becomes a wound.
A 2024 systematic review of prevention grouped the approaches that have been tried into interface type, protective dressings, adjusting mask leak, managing humidity, positioning and personalized mask design. Every one of those is something to raise with the team. Do not cut or apply a dressing under a mask without asking, because it changes the seal.
Two things you can do without asking anyone. Wash the face before the mask goes on, and keep moisturizers off the areas the cushion touches. That is ResMed’s own advice in its care guide, because facial oils build up on a cushion and degrade the seal.
Humidification, dry mouth and secretions
Moving that much dry air through the nose irritates the lining and raises resistance. A heated humidifier is used to counter it, and the ventilation literature credits it with reducing nasal resistance and improving comfort and therefore how much people are able to use the machine.
Humidity has a second face. The same literature notes that raised temperature and moisture under a mask soften the skin and add to friction, which contributes to pressure sores. That is why humidification is a setting the team balances, and not a dial to turn up because someone woke with a dry mouth.
Water pooling in the tubing overnight is common in a cold room, because warm moist air condenses on its way along the hose. Tell the team about it. Room temperature, tube position and humidifier settings all feed into it.
For dry mouth and nose, NIV4MND lists humidification, artificial saliva, good hydration and a review of medications that thicken secretions. For secretions that are too much rather than too little, it lists reviewing medications, optimizing cough and swallow, and offering a suction machine. Hydration and swallowing sit alongside this, which is why it is worth reading our page on eating, drinking and swallowing changes in parallel.
A full face mask makes talking hard, and that gets worse the more hours the mask is on. Planning for that early, rather than at the point it becomes urgent, is covered in our communication tools and voice banking guide.
What a caregiver actually does, day to day
Cleaning intervals differ between manufacturers and models, so your own manual is the one that counts. As an example of the shape of it, ResMed’s care guide for its CPAP equipment sets out a daily, weekly and monthly rhythm.
| How often | ResMed’s guide suggests |
|---|---|
| Daily | Mask cushion and the short tube at the mask |
| Weekly | Mask frame, headgear, device tubing, humidifier tub, and a wipe of the machine |
| Monthly | Check the air filter for dust build-up, and inspect the humidifier tub for wear |
Wash parts by hand in warm water with a mild detergent, rinse well, and air dry out of direct sunlight. ResMed’s guide names the things to keep away from a mask: scented oils and aromatic solutions, antibacterial soaps, alcohol, bleach and strong-smelling products. Memory foam cushions are a separate case and are not washed at all.
Filters matter more than they look. A blocked filter reduces the pressure actually being delivered, which is the whole point of the machine. Do not guess the interval. Ask your equipment supplier to write the replacement schedule for your specific model on a card and tape it to the machine.
Alarms are model-specific and no page on the internet can tell you what yours mean. Ask the respiratory therapist to write out each alarm on your machine in plain words, and what you are meant to do about each one. Then work in this order when one sounds: look at the person, then the mask, then the tubing, then the machine.
Power outages and travel
This is a machine somebody sleeps on, so the power plan is part of the equipment. Emergency preparedness guidance for people using electricity-dependent medical equipment says to contact your power company in advance about life support devices, because many keep a priority reconnection list, while warning that power can still be out for many days after a disaster.
Know the working time of any battery that supports the system, and talk to your equipment supplier about backup power options for your device specifically. Ask what runtime you get with the humidifier switched off, since heating water draws power that ventilating does not.
- Register the household with the utility company as having life support equipment
- Ask the DME supplier for the external battery option and its stated runtime
- Run generators in open air only, and store fuel safely
- Test the backup power occasionally, rather than discovering it fails during an outage
- Keep the in-hours and out-of-hours support numbers written down by the machine
For travel, the TSA lists CPAP and BiPAP machines among the medical devices allowed in carry-on baggage, and current rules are on tsa.gov. Tell the airline in advance, carry the prescription and the supplier’s phone number, and take the spare mask you should already have.
Why there is no product link on this page
We link to products we can stand behind, and there is nothing to link here. A non-invasive ventilation setup is prescribed equipment. The machine, the mask, the tubing, the filters and the humidifier chamber come from a durable medical equipment supplier against a physician’s order, and the mask is sized and fitted to the face by a respiratory therapist.
Buying a lookalike online is not a shortcut to any of that. If cost or coverage is the obstacle, that is a real problem with real routes through it, and we cover them on our page about paying for equipment and getting it covered. The supporting items that are genuinely bought rather than prescribed are listed in our respiratory and orthotic equipment catalog.
When this stops working
MND Australia states plainly that over time this equipment becomes less effective at controlling respiratory symptoms, because the underlying muscle weakness continues. When that point arrives the answer is not a setting you change at home. It is a review with the respiratory team, who may try a different interface, a daytime mouthpiece, or a change in support.
The same organization describes invasive ventilation through a tracheostomy as a separate route, requiring constant around the clock care. Whether to consider it is a decision for the person themselves with their own clinicians. It is not one this page takes a side on.
Common questions
Can I turn the pressure down if it feels too strong?
No. Pressures, mode and ramp are prescribed from testing, and changing them at home removes the only thing making the machine useful. Report the discomfort instead. Adjusting settings is one of the standard responses a clinical team uses to reduce side effects, and they can do it safely.
The mask leaks. Should I tighten the straps?
Only slightly, and only after reseating it. Lift the mask off, settle the cushion again with the machine running, then take up the slack evenly. If it still leaks, the cushion may be worn or the size may be wrong. Both are calls to the respiratory therapist, not jobs for more tension.
Does BiPAP treat or slow the disease?
No. MND Australia states that non-invasive ventilation relieves symptoms such as fatigue, breathlessness and disturbed sleep, but does not prevent the progressive weakening of the respiratory muscles. Studies have reported survival and quality of life findings, and those are questions to put to the pulmonologist about the specific situation.
How many hours a day should it be used?
That is prescribed, not chosen. MND Australia notes the machine is usually used at night at first, with daytime use added as respiratory muscles weaken. Clinical services monitor how much it is actually being used, so be honest about the real hours rather than the intended ones.
What if they cannot tolerate the mask at all?
Say so early. Getting used to a mask takes perseverance over the first weeks, and clinical guidance expects several types and sizes to be tried before one works. Persistent claustrophobia has its own answers, including alternative masks and mouthpieces. Struggling silently is the route to abandoning the equipment altogether.