Data collection
Blood samples were obtained on admission, on the day of TAVR (within two
hours after valve implantation) and at discharge. NLR was calculated on
admission, on day of TAVR, and at discharge by dividing the number of
neutrophils by the number of lymphocytes.
Routine transthoracic echocardiography (TTE) was performed upon hospital
admission and discharge, and standard measurements were assessed,
including left ventricular ejection fraction (LVEF), and mean
transaortic pressure gradient (PG). Computed tomography angiography (CT)
was performed before TAVR procedure to assess annular dimensions (area,
perimeter, maximum and minimum diameters), eccentricity index (1-minimum
diameter/maximum diameter), cover index (100 X (prosthesis diameter-mean
annulus diameter)/prosthesis diameter), valve index (100 X (prosthesis
diameter/LVOT diameter)). For the assessment of calcification, the FACT
score was used (12), while the calcification of single leaflet was
qualitatively evaluated with 3 points grading system (1, mild, 2,
moderate, 3, severe).