Up until two months ago, he was very active physically -- golfing on a regular basis, bowling, walking, gardening. Then he started having symptoms of weakness. Several weeks ago, he suffered a
was due to a clot from his heart, and caused loss of speech (or rather, vocabulary). Within a few days, his speech was almost back to normal.
The echocardiogram after the stroke indicates that he needs a mitral valve replacement due to stenosis.