Prayer Request for David

Update: David is doing ok. He keeps trying to do too much, so that's a problem. He got really dizzy and pale in church yesterday but insisted on staying. Kelly, his wife, said he won't take his medicine as he should sometimes also. I'm still concerned for him.

Prayer request - a good friend of ours is facing open-heart surgery on Friday. He's only 47, and his wife, a friend of mine, is only 37. To be so young and have to face this, for both of them! His name is David.
Thanks,
Beth