An 80-year-old

woman is admitted with acute pulmonary oedema on a background of progressive

shortness of breath with exertional chest pain for 6 months. She has a history

of renal impairment with a eGFR of 40 ml/min. She is initially commenced on IV

furosemide with good effect. An echocardiogram reveals LVEF 40% with severe

aortic stenosis (AS) with an estimated valve area of 0.7 cm2. She is on sinus

rhythm, 90 bpm. What would you do next?