Table 4 Transfer function analysis (TFA) of mean arterial pressure (MAP) and mean cerebral blood flow velocity (CBFV) in ventricular assist device (VAD) cases and controls

VAD1

0.67

1.35

1.00

0.65

1.20

-0.38

0.67

0.75

0.51

VAD2

0.76

1.82

0.98

0.79

1.25

-0.08

0.68

1.96

0.30

VAD3

0.20

0.95

0.32

0.45

1.52

0.27

0.54

1.13

0.21

VAD4

0.44

0.89

0.90

0.82

0.83

0.51

0.74

0.79

0.16

VAD5

0.45

0.63

1.04

0.56

1.18

0.72

0.77

0.72

0.00

Mean ± SD

0.50 ± 0.22

1.13 ± 0.47

0.85 ± 0.30

0.65 ± 0.16

1.20 ± 0.25

0.21 ± 0.44

0.68 ± 0.09

1.07 ± 0.52

0.24 ± 0.19

Control

VLF

LF

HF

Coh

Gain

Phase

Coh

Gain

Phase

Coh

Gain

Phase

C1

0.13

0.55

0.73

0.65

0.65

0.62

0.74

0.36

-0.09

C2

0.61

1.43

0.63

0.21

1.71

-0.24

0.32

2.29

0.27

C3

0.72

1.33

0.33

0.30

1.89

0.07

0.34

2.24

-0.15

C4

0.46

1.12

-0.27

0.25

1.07

-0.40

0.28

1.02

-0.18

C5

0.25

1.15

-1.71

0.51

1.18

0.76

0.91

1.28

0.21

Mean ± SD

0.43 ± 0.25

1.12 ± 0.34

-0.06 ± 1.00

0.38 ± 0.19

1.30 ± 0.50

0.16 ± 0.51

0.52 ± 0.29

1.44 ± 0.83

0.01 ± 0.21

P

0.65

0.96

0.089

0.039*

0.69

0.88

0.26

0.42

0.11