A year ago my mother had a so-called stroke. After some tests they found she had a hole in her heart but they told her it was too small and not to worry. Well a year later-the same thing happens, but worse and it seems to be happening more often. Symptoms are feeling tired, fast heartbeat, then she faints or feels faint. She says she can't brush her hair without getting tired and some doctor here in town said it was her blood pressure-even though those tests came back normal. So this doctor puts her on those blood pressure pills and we told her to stop taking them. They didn't help and she's still having problems. Tell me what's wrong with her and what can be done.