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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.