my mom is in S.I.C.U. her o2 level oxygen states 40 percent and by her blood pressure says 100 percent is that

Question:

good? also what does she have to get to be taken off the trach ventilater?

Answers:
That is much better than before, but they don't just use her oxygenation to determine when she can come off the ventilator, they also go by her carbon dioxide levels (which can be determined by her having a blood gas drawn). It also depends on her overall condition and how strong her respiratory muscles are and what her lung capacities are (which can be determined by the respiratory therapist doing a FVC, forced vital capacity, and a NIF, negative inspiratory fluency, on her. These can be easily done while she is on the ventilator.

I'm so sorry your mom is sick; my mom was in and out of hospitals throughout my childhood, and I know how hard it is.
Blood pressure is measued in a format such as this (110/70), so it can't be a percentage (as far as I know).
I know that an O2 level of 40% is pretty bad, but I'm suspecting that you are reading the numbers for the settings of the ventilator machine (they are confusing to everyone but the respiratory techs!) and the O2 level is actually the 100% that you mentioned as the blood pressure, and 100% 02 level is very good!
It's impossible for me to tell you what it will take for your mom to be off the ventilator, without knowing her history, etc (and even then, I'm no doctor). Have you tried talking to the nurses and doctors in charge of her care? They'd be able to give you the best idea of what is going on.
I hope an I.C.U. nurse answers your question, so you can get a better understanding of what is going on.
I hope everything works out for you, you'll be in my thoughts.

She should be breathing a strong 90% or better to be off the vent and breath on her own. If her oxygen level is a 40%, it is very likely she will not be able to breathe on her own without the vent. Best of luck, hope she recovers soon!

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my mom is in S.I.C.U. her o2 level oxygen states 40 percent and by her blood pressure says 100 percent is that

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