Assertion: mitral valve prolapse's symptom | /r/HasProperty | heart murmurs
Facets:
value: most often
type: DEGREE
value: if present
type: OTHER
Source sentences:
text: Its symptoms if present are breathlessness, heart palpitations, fainting, reduced stamina, heart murmurs and chest pain.
text: Most often, the first symptom noticed by a physician is a heart murmur he hears during a routine examination.