Table 3 Characteristics during a follow-up period of 9 months in patients implanted with a CRT-D/P (mean ± SD) (n = 21)

NYHA classification score

Before procedure

3.36 ± 0.50

3.4 ± 0.55

3.3 ± 0.52

0.840

3 months after procedure

2.45 ± 0.52

2.6 ± 0.55

2.5 ± 0.55

0.770

9 months after procedure

2.45 ± 0.52

2.4 ± 0.55

2.5 ± 0.55

0.770

P value

0.000

0.032

0.024

–

LVEDD (mm)

Before procedure

65.1 ± 9.1

68.2 ± 12.3

62.6 ± 5.3

0.336

3 months after procedure

63.4 ± 10.1

64.4 ± 12.6

62.4 ± 8.3

0.781

9 months after procedure

58.7 ± 10.2

39.8 ± 4.1

45.2 ± 8.7

0.303

P value

0.319

0.735

0.229

–

LVEF (%)

Before procedure

33.1 ± 3.0

32.0 ± 4.2

34.0 ± 1.3

0.302

3 months after procedure

40.9 ± 7.0

41.6 ± 7.5

40.3 ± 7.3

0.782

9 months after procedure

45.4 ± 8.7

45.0 ± 5.1

45.8 ± 12.0

0.894

P value

0.002

0.011

0.143

–

QRSd (ms)

Before procedure

168.2 ± 18.9

158.0 ± 13.0

176.7 ± 19.7

0.104

9 months after procedure

131.4 ± 15.5

121.0 ± 3.8

133.3 ± 8.2

0.001

P value

0.001

0.005

0.011

–

NT-ProBNP (pg/ml)

Before procedure

2937 ± 1646

3240 ± 2258

2684 ± 1083

0.634

3 months after procedure

1832 ± 1541

1151 ± 1774

2066 ± 1444

0.607

P value

0.014

0.04

0.219

–

VT/VF Episodes (n)

8

3

5

0.175

Follow-Up Period (d)

574 ± 188

572 ± 207

575 ± 190

0.981