My husband has empyema. He is on oxygen 24/7. If he is active at all I mean walking at a vey slow pace for a few minutes then exerting himself for a few minutes his oxygen level can go down to the high 60's and is pulse can go up to the 130 or more. He can sit down and his oxygen level will go back up slowly an his pulse will go down to 110 or so. If he is sitting at his desk and doing nothing else his oxygen level stays around 90 with the condenser being on 2. Just going to the bathroom slowly the condenser is on 6 and his breathing is labored. It takes a while when he sits back down to get his breath before I turn it down to 2. We were wondering if anyone had a reason for the pulse to go up so much from very little exertion
It never fully recovers until the next morning after he has done something for it to go that high.