Clinical Findings:
A slim lady (weight 54 kg, height 157 cm), has chronic AF (PR 98 beat per minute), her BP is 120/77 mmHg and SPO2 99% on room air, with moderate bilateral lower limb oedema. On chest examination, she has a normal chest contour, moves with respiration and visible apex beats. On auscultation, there is a loud systolic murmur at the apex of the heart radiating to the left axilla.