Hi and pleased to answer you
According to a preliminary study published in the Lancet on November, 2014,
endocarditis comes back because prevention has relaxed. Endocarditis is an inflammation of the wall of heart valves. The heart valves and their abutments are located between the atria and the ventricles. They have a fundamental role in cardiac mechanics.
Before an emergency stage, endocarditis can start gradually over several months. This is called subacute infectious endocarditis. Symptoms include low fever (less than 39.5 ° C or 103 ° F), cramps, muscle and joint pain (chest region +++), cephalgia. If the diagnosis is not made at this stage, the infection can progress very quickly under the name of acute endocarditis and it causes an infectious syndrome (fever, chills,
shortness of breath, ...
septicemia) until the
cardiogenic shock /
Heart failure as the heart is damaged.
Echocardiography is the primary step of diagnosing endocarditis, by a transthoracic
ultrasound, a classical ultrasound where the transducer has passed over the skin to see the functioning of the heart, or a transesophageal ultrasound by placing the probe internally to get closer to the heart and the valves.
I think that the ultrasound exam decided by your cardiologist, is the only way to answer you and it must be done URGENTLY.
Best wishes.