Table 2

Comparison of the Clinical, Echocardiographic, and Procedure Characteristics of Patients Undergoing TAVI Between the 2 Time-Frame Periods of the Study

VariablesPeriod 1 (n = 20)Period 2 (n = 54)p Value
Age, yrs85 ± 682 ± 90.12
Sex (men)13 (65%)25 (46%)0.15
Weight, kg66 ± 1671 ± 140.23
Height, cm164 ± 11162 ± 80.52
BSA, m21.7 ± 0.21.8 ± 0.20.46
TTE systolic aortic annulus, mm22.8 ± 2.122.9 ± 1.50.61
TEE systolic aortic annulus, mm23.6 ± 2.323.3 ± 1.70.84
Ejection fraction, %46 ± 1653 ± 180.17
Aortic valve area, cm20.58 ± 0.10.70 ± 0.20.003
Aortic valve mean gradient, mm Hg44 ± 1452 ± 140.03
Implantation access (femoral)14 (70%)32 (59%)0.40
Prosthesis size (26 mm)14 (70%)36 (67%)0.79
Cover index, %6.6 ± 66.7 ± 50.92
AR ≥2/4 immediately after TAVI8 (40%)8 (15%)0.02

Values are mean ± SD or n (%).

Abbreviations as in Table 1.

  • Period 1: October 9, 2006 to January 9, 2008; and Period 2: January 16, 2008 to December 23, 2008.

  • Cover index defined as 100 × ([prosthesis diameter – TEE annulus diameter]/prosthesis diameter).