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Table 1 Preoperative and perioperative results in patients managed routinely (group A, early phase) or following a PPMI reduction protocol (group B, late phase)

From: Transcatheter aortic valve implantation with a mechanically expandable prosthesis: a learning experience for permanent pacemaker implantation rate reduction

 

Group A (35)

Group B (31)

p-value

Age (years)

81.4 ± 6.1

79.4 ± 4.7

0.1

Female gender

57.1%

58.1%

0.9

Body mass index

27.3 ± 4.4

27.3 ± 4.2

0.9

LVEF%

55.6 ± 12.1

50.8 ± 16.1

0.1

A-V block first degree

8.6%

9.7%

0.6

Right bundle branch block

14.3%

12.9%

0.5

Left bundle branch block

20.0%

16.1%

0.4

Logistic Euro-score

5.1–49.7; 12.6

3.1–68.0; 14.2

0.2

Euro-score II

1.2–16.4; 3.5

2.0–28.0; 3.8

0.08

STS-score (mortality)

2.0–9.2; 3.5

2.0–16.0; 4.0

0.04

Annulus (mm)

24.4 ± 2.0

24.0 ± 1.9

0.4

LVOT (mm)

24.2 ± 2.1

24.0 ± 2.3

0.4

Bulbus aortae (mm)

31.0 ± 3.5

30.3 ± 2.2

0.4

Calcification vertical extension (mm)a

11.1 ± 4.8

11.3 ± 3.3

0.8

Operative time (min)

46–290; 78

40–135; 80

0.3

Radiation time (mm)

12–43; 23

11–64; 21

0.6

Valve retrieval

3%

9.6%

0.2

Valve full resheating

8.6%

19.2%

0.2

Valve post-dilatation

0

0

 

Prosthesis size (mm)

24.9 ± 1.6

24.9 ± 1.5

0.9

Prosthesis/annulus

1.02 ± 0.06

1.03 ± 0.05

0.4

Aortic valve area (cm2)

1.5 ± 0.3

1.5 ± 0.4

0.8

Mean gradient (mmHg)

9.0 ± 4.5

6.3 ± 2.6

0.01

Paravalvular leak (0–1–2)

77.1%–22.9%–0%

87.9%–12.1%–0%

0.08

In-hospital death

0

9.6%

0.09

Stroke

0

0

 

AKI

3%

3.8%

0.3

Bleeding (major–minor–none)

8.6%–23%–69%

0–26.9%–73.1%

0.3

New PPMI

34.3%

9.7%

0.02

Early safety (30-days)

100%

90.4%

0.09

  1. LVOT, left ventricular outflow tract; AKI, acute kidney injury; PPMI, permanent pacemaker implantation. Data are presented as absolute numbers, percentages, mean ± standard deviation for normally distributed variables and median with minimum and maximum values for variables with not-normal distribution
  2. aFrom deepest point of calcification to highest point of calcification measured at pre-operative cardiac CT (nadir–zenith)