My mother (58 years old) has a mechanical valve and pacemaker that was implanted two years ago. She is currently on Coumadin, Diltiazem, and Amiodarone. She was diagnosed with Afib when she got the pacemaker implanted. This past week she went to the hospital due to her afib and in the end the doctor performed a cardioversion which got things back to normal. Now, she's home and feeling a lot better. However, she's reported that sometimes she feels startled by the slightest sound like the ring of a cel phone for example. I guess it's like when you are sleeping and you suddenly feel like you're falling if that makes sense. Has anyone felt this? I attribute it to the fact that she spent the past week in the hospital and was exhausted by her afib.