Are the vets sure murmurs don't come and go (or at least sometimes are more difficult to hear than at other times)? My son and I both have innocent murmurs that doctors sometimes hear and sometimes don't. Also, several doctors have told us that murmurs sound louder if they are on the point of closing up -- which they sometimes do. They're louder as they close because the opening becomes smaller so the turbulence going through the opening is greater and therefore louder. Maybe Katie's murmur is gone because the opening or floppy valve (whatever it was) has closed properly now. |