weakness caused by desaturation is it my heart?

[hmcurrie]

went to the er by ambulance last night because i had some weird heart arrythmia- lately my hands and fingers turn blue and i get weak as soon as i move sometimes even sitting - well in the er i noticed that everytime i got this weakness laying there that my oxygen level would go down like 6 or 7 points from 99 to 92 or 93 then the weakness would go away and the number would go back up, this weakness is so severe i cannot do anything except sit and then i still have it. my bp has been really low recently as well 53/29 - 81/75 - 51/42 etc... the er kicked me out and said i was fine did an ekg only and would not test the blood the ambulance drivers took from me - i had an echo 5 months ago - EF was 40% and FS was 21% so they said i am fine and see ya, i am terrified i have 3 small kids and everything is turning blue lips too and i am almost passing out and cant do nothin also have had very severe hypoglycemia lately even though i have diet controlled type 2 diabetes, i feel like i am dying and they treated me like a lunatic- this is the second time this weak this has happened and they told me to do yoga and go to a psych, i cant do yoga cause i am too weak to even walk they said dont come back they will not test nothing !! help please ! what can this be?

[kenkeith]

FS (fractional shortening) is another method of evaluating left ventricle functionality (heart's pumping ability). . . FS above 30% is considered normal, with 26 to 30% representing a mild decrease in function. . . . A decrease in the shortening fraction usually precedes a detectable decrease in the ejection fraction (normal 55-75%).

According to your EF and FS, you have at a minimum weak- heart contractions that may or may not provide adequate oxygenated blood to meet the oxygen demand  and cause your symptoms..  

If you're talking oxygen saturation, 90% or above is acceptable, although some docs like 93% and above.  I was in ICU with lung edema and before I was able to leave the hospital the oxygen level had to be at least 93%...was on a respirator for a couple of days...I don't believe it is normal to have the variation of oxygen level as you describe.

"The saturation levels are normal at 95%-100%. This is what you would expect a healthy adult to be. A smoker who is also a 'healthy' adult could be as low as 90% ( and even that would be a little concerning depending on the person and their specific circumstances) Someone with COPD could be as low as 85%. Anything lower then the above in their specific circumstances and I would consider it very impaired, and likely an emergency situation". Mayo Clinic article.