re: OT Docs - Question about Sepsis and Dialysis

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it looks like there are 2 types of dialysis? I'm confused.

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There are different ways to do it and different things you can do with it. In any instance, think of it as bypassing a broken kidney and using a machine kidney instead.

Whether the kidney comes back is complicated. With the information you've given, it's hard to say which side of the fence this person falls on. Even still, percentages don't exactly apply to individuals on their path to recovery or demise. He is peeing (Point for recovery), otherwise healthy (I'll believe you here), young (point), but the drugs/antibiotics he's currently on, the type of infection he has, and the severity of his disease aren't known to us.

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an the kidneys start functioning on their own again?

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They sure can. As said by many others, they also could not.

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Does dialysis help them to function on their own again?

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It's hard to explain this without getting technical. If he's getting dialysis, it means he would have a significant risk for dying/severe problems without it. Dialysis is kidney bypass, giving them a break to heal. So, in a sense that you're buying them time so that he doesn't die and they can have a chance to heal without the buildup of the toxic substances that the kidney usually excretes (though most of them even in high volume aren't directly toxic to the kidney), yes. Dialysis helps the kidneys recover. Dialysis itself doesn't do anything directly to the kidney, though.