Hi I am glad that you feel better. T3 does effect the heart, usually has to be just right for the patent and not over range.Too low effects it too.
However, heart murmur is not always detectable without an Echo, sometimes more. It is common and often does not matter. To treat it, if very bad as always the Mitral Valve, it needs heart surgery. However, only done if very bad. it is very good OP but serious., been done many years., so far cannot be micro surgery.
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