Re: Bipap with backup rate. What is it?
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Re: Bipap with backup rate. What is it?


Posted by SCNVSleep on August 27, 2002 at 08:00:44:

In Reply to: Re: Bipap with backup rate. What is it? posted by new to sleep on August 26, 2002 at 19:33:34:

A back up rate is basically a bare bones form of pseudo-ventilation. The bipap has a sensor in it and if the patient doesn't breathe and cause the bipap to cycle from IPAP to EPAP, it cycles on its own. Its not true ventilation in that its not forcing the air into the lungs, it just cycles from IPAP to EPAP. The theory is, that this should be sufficient to prod a person into spontaneously breathing.

The B/U rate is usually set at approximately 2-3 breaths lower than the patients resting respiratory rate. So if you set the back up at 10 breaths per minute, the machine will look for a respiratory cycle every 6 seconds. If the machine doesn't sense that cycle, it will cycle on its own.

I've had to use B/U before and it works relatively well...especially with patients who have Cheyne-Stokes.

And for the poster who said all it did was blow air in the patient's face...was the machine you were using equipped with a sensitivity setting? If not, that will make a world of difference. Some people breathe very shallow and if its too shallow for the machine to sense, it will cycle and disrupt the patient, because they are breathing, the machine just doesn't know it...increasing the sensitivity will help keep the Timed mode from going into effect unneccessarily (sp?)

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