Shortage of oxygen in my blood?!

Shortage of oxygen in my blood?

I was rushed to hospital on MOnday because i was struggling to get my breath, the hospital carried out all blood tests, heart tests, and x-rays and after 8 hours the conclusion was that i didn't have enough oxygen in my blood. I am home now but i been very ill, struggling to get my breath and light headed. I have been given an inhaler and have to see a chest specialist, What has caused this and is there anything i can do to prevent it.

Ex smoker

You don't say how old you are or how long you were smoking for. I had a similar episode but I had already been diagnosed as having COPD which is emphysema or chronic bronchitis. It is always caused by smoking. I have given up but too late to prevent lung damage, and that may be what has happened to you. My lungs only work to about 50% capacity and I have very little reserve if I do anything a little bit strenuous and easily get out of breath. It can be very restrictive at times. I have 3 different inhalers. They have helped a bit but the basic problem is still there. I had my heart all checked out too, at the moment that is OK.There is no cure for tis. You just have to adapt and live as best as you can within the limitations your condition creates, Good luck anyway.