There is a protocol that is followed for treatment: Quickly destroy the infection....apparently that has been done. Endocarditis is an inflammation or infection of the endocardium, which is the inner lining of the heart muscle and, most commonly, the heart valves. It is usually caused by bacterial infection, but can be caused by fungus.
Your son may need surgery only if there is heart failure, fungal infection, heart failure, an abscess around a valve in your heart. damage to the electrical system of your heart (may not be apparent, but a risk) and there may be consideration given to infected tissue that repeatedly breaks off the valve and travels to other parts of your body (for example, lungs, brain, or kidneys) may be a risk. Do any of the above conditions apply? If not, there may not have been serious damage..
You need to speak to a social worker and one is usually connected to the hospital. Ask the hospital for a reference.