whoa.... his sats was in the 60's? that's MIGHTY serious!
To divulge for a bit.. my mother DID have an pulmonary embolism (caused by a DVT in her leg that moved up to her lung) and in the end that's what killed her. Yep, it's that serious. Anyway the day she was admitted to hospital she simply couldn't breathe and could hardly move. She struggled to walk over to the hospital (about 100m walk from her place - very close - yet it took her apparently half an hour). Anyway when they did her sats she was at 72 - and they said that was the lowest they had ever seen a patient who still managed to stand - so 60's... well that's VERY low.
I don't know a HEAP about it, but epo stimulates red blood cell production, and red blood cells carry oxygen around the system, so I am certain the two go hand in hand. He must have had a very low hemoglobin suggesting that he just wasn't getting enough oxygen to his cells, due to low red blood cell count, and perhaps other reasons. If the cells are starved of oxygen, erll.. bad things happen.
The normal sort of figure for the sats is 97+. Last time I had mine done it was 98% - so even with a not normal red blood cell count you can still have normal sats - that's why I think other stuff was going on - perhaps the fluid around his lungs and heart was also affecting the flow of oxygen around.
hmm TS are you sure the plumber is only coming to look at your shower?
(hmm I must go do a course then offer to check your valves...