I was working the 6 P.M. to 6 A.M. shift and it was dragging. We got a call for respiratory distress...turned out to be bogus. The patient was not keen on being transported but I felt something was wierd...his color was off. I asked if he had any trouble urinating lately.....of course he denied any problems. I convinced him to come with us for a check-up just the same. During transport, the patient out of the blue say's "Are you still here"? Then he goes into full seizure mode! Next thing I know he ain't breathing! The monitor shows flat line....what the hell is going on? I hit him once and get a rythm back....shaky but a rythm just the same. I had to assist ventillations for the rest of the ride. At the E.R. we go straight to the Code Room. The E.R. doc takes over. I finish my paper work and go back to have a look-see. The patient is sitting up and asks for a glass of water! The E.R. doc says..."Hey, nice save...this patient hasn't urinated in over 72 hours...he was super hyperkalemic, another hour or so and he would have arrested in bed". Listen to those voices in your head! Unless they are saying...jump, jump!!