The minimal leakage between left and right atrium is not considered medically significant. It usually is a left to right shunt meaning some blood/oxygen leaks into the right atruim and is mixed with oxygen depleted blood and cycles through the lungs again.
It is generally accepted medically to wait until an aneurism exceeds 5.0 before surgical consideration. With an aneurism it is recommended not do any heavy lifting do to increasing pressures and can cause dissection as well as maintain normal or low system pressure.
There doesn't appear to be any conditions that would cause serious concern at the present time. Monitor the aneurism and keep blood pressure as low as recommended.