Restenosis vs inadequate valvotomy – Cardiology MCQ

For differentiating mitral restenosis after closed mitral valvotomy from unsuccessful valvotomy by the history following feature is needed:
a. Worsening of symptoms soon after valvotomy
b. Sustained improvement by at least one class in functional status for one month followed by worsening
c. Sustained improvement by two classes in functional status for at least six months followed by worsening
d. Sustained improvement by at least one class in functional status for six months followed by worsening
Please check the YouTube video above for the discussion