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Table 2 Rest and stress data

From: Cardiac reflections and natural vibrations: Force-frequency relation recording system in the stress echo lab

 

EXERCISE

DIP

PM stress

N of pts

49

31

8

Age (yrs)

58 ± 13 §

66 ± 11

71 ± 10

Gender (M/F)

33/16

17/14

6/2

BSA (m2)

1.86 ± .20

1.78 ± .16

1.89 ± .25

Standard echo measurements

LVMI (g/m2)

104 ± 30

104 ± 20

138 ± 35

HR rest (bpm)

72 ± 15

68 ± 12

71 ± 10

HR peak (bpm)

130 ± 21Δ

86 ± 15*

130 ± 12

Δ HR (rest-peak, bpm)

59 ± 20Δ

18 ± 13*

59 ± 14

LV EF % rest

59 ± 10

59 ± 10

51 ± 10

LV EF % peak

65 ± 12‡

64 ± 11*

49 ± 16

Δ LV EF % (rest-peak)

6 ± 7‡

5 ± 7

-2 ± 10

WMSI rest

1.08 ± .22

1.11 ± .24

1.21 ± .41

WMSI peak

1.10 ± .26

1.12 ± .24

1.32 ± .44

Δ WMSI (rest-peak)

.03 ± .13

.01 ± .06

.11 ± .22

FFR with echocardiography (SP/ESVi)

SP/ESV index rest (mmHg/mL/m2)

7.6 ± 4.6

7.3 ± 2.6

6.3 ± 4.3

SP/ESV index peak (mmHg/mL/m2)

14.7 ± 8.4Δ

8.3 ± 3.5

10.3 ± 8.1

Δ SP/ESV index (rest-peak)

7.1 ± 5.4Δ

1 ± 2.1

3.9 ± 4

Δ SP/ESV index % (rest-peak)

103 ± 74§

13 ± 26

49 ± 37

Sensor built FFR (isovolumic vibrations)

Force rest (g * 10-3)

10 ± 4.7

12.3 ± 6.1

9.5 ± 4.5

Force peak (g * 10-3)

36 ± 18.7§

15.3 ± 8.1

15.2 ± 5.6

Δ Force (rest-peak, g * 10-3)

26 ± 16.7§

3 ± 5

5.7 ± 4.4

Δ Force % (rest-peak)

275 ± 132§

28 ± 39

74 ± 52

Peripheral pressures, load and coupling

SBP rest (mmHg)

133 ± 24

138 ± 23

141 ± 29

SBP peak (mmHg)

189 ± 26§

131 ± 27

144 ± 34

Δ SBP % (rest-peak)

45 ± 20§

-5 ± 12

2 ± 12

SVR rest (dyne * sec * cm-5)

2004 ± 740

2076 ± 649

2161 ± 1163

SVR peak (dyne * sec * cm-5)

1472 ± 464

1500 ± 636

1809 ± 737

Arterial compliance rest (mL *m-2/mmHg)

0.51 ± 0.19

0.48 ± 0.15

0.58 ± 0.40

Arterial compliance peak (mL *m-2/mmHg)

0.33 ± 0.12Δ

0.54 ± 0.20*

0.35 ± 0.19

Δ Arterial compliance % (rest-peak)

-31 ± 26Δ

18 ± 32*

-31 ± 27

Arterial elastance index rest (mmHg/mL/m2)

4.4 ± 1.4

4.4 ± 1.1

4.7 ± 2.7

Arterial elastance index peak (mmHg/mL/m2)

6.2 ± 2Δ

3.9 ± 1.3*

7.3 ± 2.9

Δ Arterial elastance index % (rest-peak)

47 ± 47Δ

-10 ± 23*

62 ± 41

Ventricular/arterial coupling rest (SP/ESV/EaI ratio)

1.7 ± .7

1.7 ± .8

1.3 ± .7

Ventricular/arterial coupling peak (SP/ESV/EaI ratio)

2.5 ± 1.3‡

2.3 ± 1.2

1.3 ± .9

Δ Ventricular/arterial coupling % (rest-peak)

48 ± 65‡

31 ± 37

-2 ± 40

Cardiac index rest (L/min/m2)

2.1 ± 0.6

2 ± 0.4

2.4 ± 0.8

Cardiac index peak (L/min/m2)

3.9 ± 1.1§

2.8 ± 0.9

2.7 ± 0.8

Δ Cardiac index % (rest-peak)

99 ± 62§

37 ± 32

14 ± 22

DBP rest (mmHg)

71 ± 11

71 ± 13

77 ± 11

DBP peak (mmHg)

93 ± 13§

68 ± 12

80 ± 16

Δ DBP % (rest-peak)

31 ± 20§

-4 ± 13

4 ± 18

LV EDV index rest (mL/m2)

51 ± 16

50 ± 11

65 ± 32

LV EDV index peak (mL/m2)

47 ± 14

50 ± 13

47 ± 30

Δ EDV index % (rest-peak)

-7 ± 16‡

-1 ± 12*

-30 ± 12

  1. § = significant differences between exercise and both dipyridamole and pacing stress pts; ‡ = significant differences between exercise and pacing stress pts; * = significant differences between dipyridamole and pacing stress pts. Δ = significant differences between exercise and dipyridamole stress pts.