How do we have space for extra blood during blood transfusions?

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I’m about to go to the hospital to receive 2 units of blood, because I’m dangerously low on something (red cells?) .

It’s not my first time, but I always wondered, how does the body have space for an extra litre of blood in your system? What happens to the veins? Do they just stretch out a bit to accommodate? Also, what about having too much of other stuff after this? Like plasma? I am so confused by how all of this works.

I do know that there must be a way for the body to balance itself out afterwards, as usually I need to urinate quite badly afterwards 😅

Please help make light of this, I am not looking forward to being stabbed again ( I have extremely hard veins to find) and I need the distraction, and the answer!

Thank you !

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5 Answers

Anonymous 0 Comments

From my understanding of what you described as you being low, think of it as adding oil to your car when it’s low. Your body is always replacing your blood. Sometimes your body can’t produce enough blood. Usually that’s followed by testing to find out why. Hope all goes well with you.

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