no machine can force a breath, so how central apnea treated?

[williamco]

would you help me understand how any BiPAP can treat ccentral apnea? no XPAP machine can force a breath into a patient if patient doesn't want to breath, only repirator at hospital setting that can do that, so how central apnea can be treated by any XPAP machine

Thanks

[Agape=Love]

Central sleep apnea is when you repeatedly stop breathing during sleep because the brain temporarily stops sending signals to the muscles that control breathing.

BiPAP ST is generally used to treat this type of apnea, ST (stands for spontaneous timed). The machine is set to recognize that the patient is not breathing on his/her own then acts as a ventilator giving breaths based on tidal volume much like a vent. Once patient resumes breathing on their own the machine will switch back to it's standard BiPAP mode letting the patient do the work.

Hope that helps,

Agape

[williamco]

thanks for the response but may I ask you, can the machine push the air inside the patient? does it have the power to do that? regardless the volume, it requires very high pressure because the machine is not only forcing the soft tissue of the throat but the entire chest cage, bone, muscles ..etc also a mandatory full face mask or air will leak through mouth

[Agape=Love]

When BiPAP ST is in timed mode it provides specific tidal volume.

tidal volume: Tidal volume is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied.

When in ST mode it works as a traditional ventilator.

A nasal mask can be used however if patient has history of mouth breathing then FFM would be strongly reccomended.

Most machines compensate for leak. If you have large leak due to mouth breathing then yes FFM would be used.

Agape

[jnk]

http://www.mayoclinic.com/health/sleep- ... -and-drugs :

Adaptive servo-ventilation (ASV). This more recently approved airflow device learns your normal breathing pattern and stores the information in a built-in computer. After you fall asleep, the machine uses pressure to normalize your breathing pattern and prevent pauses in your breathing. ASV may be more successful than CPAP at treating central sleep apnea. However, more study is needed.

[tonycog]

thanks for the response but may I ask you, can the machine push the air inside the patient? does it have the power to do that? regardless the volume, it requires very high pressure because the machine is not only forcing the soft tissue of the throat but the entire chest cage, bone, muscles ..etc also a mandatory full face mask or air will leak through mouth

I use a Bi-PAP Auto SV (servo-ventilation). I don't know about the technical details, but I can feel my chest rise and fall when the Bi-PAP has determined that I need breaths and I'm in a light sleep. It is actually annoying some times, since I'm partly awake and don't really need the Bi-PAP's help to breath.

Tony