Have stenosis in aortic valve. will valve replacement help with my constant breathlessness?

Hopefully.: The degree of improvement will depend on valve gradient, valve area, ejection fraction, degree of ventricular dilatation, degree of pulmonary hypertension, presence or absence of concomitant mitral valve, tricuspid valve & coronary artery disease, recent or previous heart attack, presence or absence of atrial fibrillation, presence/absence emphysema and other comorbidities.Pure as, early tx goodoutcome.

Depends: The severity of your aortic stenosis (AS), cardiac function, lung function and other medical conditions all weigh into the prognosis. Typically aortic valve replacement will improve ones shortness of breath. If your heart function has deteriorated beyond recovery or your lungs are the primary problem valve replacement my not be beneficial. The total picture needs to be looked at.