When divided by unified atomic mass units or daltons to form a pure numeric ratio, the atomic mass of an atom becomes a dimensionless value called the relative isotopic mass (see section below). Thus, the atomic mass of a carbon-12 atom is 12 u or 12 daltons (Da), but the relative isotopic mass of a carbon-12 atom is simply 12.
Most people who have mitral valve prolapse (MVP) donât need treatment because they donât have symptoms and complications. Even people who do have symptoms may not need treatment. The presence of symptoms doesnât always mean that the backflow of blood through the valve is significant. People who have MVP and troublesome mitral valve backflow may be treated with medicines, surgery, or both. The goals of treating MVP include:
1 Mitral valve prolapse (mitral valve prolapse) is the most common heart valve abnormality. 2  Most patients with mitral valve prolapse have no symptoms and require no treatment. 3  Mitral valve prolapse can be associated with fatigue and/or palpitations.hen MVP does cause signs and symptoms, they may include: 1  Palpitations (feelings that your heart is skipping a beat, fluttering, or beating too hard or too fast). 2  Shortness of breath. 3  Cough. 4  Fatigue (tiredness), dizziness, or anxiety. 5  Migraine headaches. 6  Chest discomfort.