Plot hole: Gus wakes up and doesn't realise initially that he's seriously ill, although he knows he's not right. When Jim woke he was given a full body scan to check his health minutes after waking, so surely Gus must have had the same scan? When all his medical problems would have been identified. So he'd have known he was very ill minutes after waking.
Suggested correction: Minutes after waking there was nothing wrong with his body yet, his body started to deteriorate rapidly afterwards.
How do you know nothing was wrong with him minutes after waking up?
Because he got a full body scan like you said and nothing came up. The first sign of symptoms he shows is after they enter the bridge (or command center) and he dismisses it as something common. Before that he shows no sign of any medical problems.
That's the mistake here - he should have had a body scan on wake-up. So did he develop multiple medical issues in the pod because his pod function was affected by the central computer being damaged by the asteroid strike? Which would fit as his pod woke him up early, a built in safety feature perhaps so people don't die in their pods? Maybe his pod wasn't working right for 2 years, so slowly damaging his body? So the wake-up body scan should have detected his multiple issues! He couldn't go from healthy to over 600 disorders in a day.
I'm not sure the pods are sensing anything, they're essentially freezers, but without freezing you. The finger connections are not sensing anything from a person in the pod as there's nothing to sense, as people are dormant. It only senses vital signs when people are woken up. So Gus blaming his pod for his medical issues is inaccurate surely? A movie mistake?
The malfunctioning pod caused his medical issues. It keeps them in cryogenic stasis. We don't know exactly how they work of course but it is more than just sensing. Basically the people inside the pods are kept dead, but the pod manages to halt any deterioration of the cells. Imagine that going wrong and the pod isn't able to keep the cells in check. Just like when exposed to high levels of radiation the cells have been damaged but there won't be any signs immediately. Only after a few hours the cells will start to break down.
He developed several severe medical issues after being woken up too early in a pod that was malfunctioning. This is fictional, future technology and we have no idea how it works, but I think its safe to assume that the pod has to keep the entire body in check during cryosleep, and if the pod malfunctions it could cause all kinds of problems, both directly and later on. If it works on a molecular level than no issue can be detected for quite a while before problems start to show, much like with radiation poisoning when cells suddenly and rapidly start dying whilst hours or even days before you feel fine.
Seems far more likely the different faults described affected the routine. Pratt's unit failure was treated as a normal wake-up, where Fishburne described a multitude of failures resulting in an emergency opening. The procedures for Pratt likely aren't triggered this way.
