My father had a heart attack about 2 and a half years ago but recovered reasonably quickly. However, in the months afterwards he had several brief blackouts which we later discovered were occurrences of his heart stopping briefly for a few seconds or less. Initially the hospital had no idea that his heart was actually stopping because even though he blacked out, by the time he arrived at the hospital all of his medical results showed as fine - his blood pressure, his ECG, etc.. However, on the last occasion he actually had the blackout while he was IN the hospital and therefore (because they ccould see it for themselves, first hand) were able to identify what was happening. Eventually they finally gave him a pacemaker. After his heart attack they had already discovered two blockages which they put two stents in to sort out. In the two years since he was given the pacemaker, he has been free from any trouble and all of his checkups have been fine. He's had a few peripheral issues - such as a thyroid complaint which they are still looking into - but otherwise fine.
However, on the morning of December 26 he had an incident which again, they were unable to explain and which has left us (his family) worried. He woke up early and went downstairs to make a drink, brought it back up and sat with his wife in bed and drank it. He was perfectly normal at this stage. He fell back asleep and woke again about 30 mins later. When he visited the lavatory, he came back out and within a minute felt terribly sick and looked a horrible color. We called for an ambulance and while he never blacked out or fainted they checked his blood pressure and the bottom number was in the 30s which I understand is ridiculously low. They took him into hospital and discharged him soon after because (as has happened before) all of his tests showed up fine and they could find nothing wrong.
I'm worried sick though. What we need are answers as to why this happened or what caused it and as before, we seem to be unable to get any...