Thanks to all who offered well wishes and prayers for Dad. He's home and resting after two days of testing. I'm very thankful that they figured out the problem. The measures to keep it from happening again are fairly easy. If it happens again after some moderate diet changes, it would mean more serious measures. The main problem is they've asked this very independent man to stop driving for 6 months. We'll see how that goes. I love you J. Paul!