Flomax and wheel chair

My dad is 73 years old and has been in the hospital, rehab, nursing care, back to hospital, currently back in rehab since August 3, 2008. He was on Flomax which he was taken off of the first week in August after arriving to the hospital with low blood pressure and leg weakness to the point of being unable to walk. He had been taking it for years so doctors did not think Flomax the cause. However, once they ret'd him on Flomax he was unable to hold his head up when sitting in wheel chair (drooling) and very unresponsive. He also vomited and just stared at it, unable to respond to try to clean himself up. They took him off Flomax with some improvement. (He could hold his head up and respond.) His weakness declined to the point that he can no longer pee/poop without a diaper, can't swallow, can't speak (due to weakened vocal chords), and has no energy. He has a feeding tube. To date, they have not been able to pin point what dad's problem is. I noticed that on October 10, 2008, they returned him to Flomax. He again is sitting in wheelchair with head hanging down. No energy to do rehab. I have requested they take him off Flomax and LEAVE him off. I don't trust this drug. I think his long-term use of this drug could be what's killing my him.