Patients with aortic stenosis undergoing transcatheter aortic valve implantation (TAVI) (n=6,046, 6 studies).
Patients with pre-operative anaemia (defined as a hemoglobin level of <12 g/dl for women and hemoglobin of <13 g/dl in men).
Patients without pre-operative anaemia.
There was no significant difference observed for the final pooled result for patients with and without anaemia for short-term 30-day postoperative mortality. However, long-term mortality rates were significantly worse in patients with preoperative anaemia compared with those without anaemia.