I am a nursing student, going into my final semester (Critical Care). I haven't had experience with ventilators yet. I have looked in my MedSurg book, but there is only one paragraph relating to my question.
A dear, close friend of our family has a 41yo son. He had a massive heart attack 2 days ago and is currently in the ICU on a vent. They are administering 100% oxygen. His prognosis is very, very poor. He had 100% blockage in one of the main arteries. The pulmonary doctor has told my MIL and the mom of the patient that they want to get him off the 100% oxygen ASAP, but even the 100% O2 isn't enough for him. My MIL called me to ask why the concern over the O2 amount. The only thing my book talks about is that anything over 55% for more than 24 to 48 hours could damage the lung tissue. Is this the main issue with high levels of O2, or are there other problems that could come about due to the long term use of a high % of O2 delivery?