Table 3.
Echocardiographic Indices Of Paced Cohort
| LVED | LVES | SF | IVS(d) | LVPW(d) | HR | ET | VCFc | |
|---|---|---|---|---|---|---|---|---|
| NTG pre-pacing | 1.37 ± .24 | .89 ± .19 | 36 ± 4 | .32 ± .03 | .31 ± .07 | 216 ± 25 | 139 ± 15 | 1.45 ± .39 |
| TG pre-pacing | 1.34 ± .25 | .84 ± .18 | 38 ± 3 | .34 ± .10 | .33 ± .10 | 197 ± 46 | 127 ± 17 | 1.63 ± .30 |
| P (NTG vs TG) | .83 | .64 | .26 | .60 | .70 | .46 | .27 | .44 |
| NTG post-pacing | 1.80 ± .35 | 1.50 ± .33 | 17 ± 5 | .26 ± .03 | .24 ± .01 | 264 ± 30 | 119 ± 11 | .71 ± .15 |
| TG post-pacing | 1.69 ± .29 | 1.29 ± .23 | 24 ± 2 | .33 ± .02 | .28 ± .05 | 245 ± 19 | 111 ± 9 | 1.11 ± .12 |
| ΔNTG | .43 ± .26 | .62 ± .27 | −19 ± 5 | −.06 ± .04 | −.07 ± .06 | 49 ± 20 | −20 ± 17 | −.74 ± .30 |
| ΔTG | .46 ± .22 | .53 ± .16 | −14 ± 4 | .03 ± .05 | −.03 ± .09 | 48 ± 61 | −16 ± 23 | −.52 ± .41 |
| P (ΔNTG vs. ΔTG) | .84 | .50 | .02 | .02 | .22 | .46 | .50 | .36 |
All values mean ± SD. LVED = left ventricular end diastolic dimension (cm), LVES = left ventricular end systolic dimension (cm), SF = shortening fraction, IVS(d) = diastolic interventricular septal thickness (cm), LVPW(d) = diastolic interventricular septal thickness (cm), HR = heart rate (bpm), ET = ejection time (msec), VCFc = heart rate-corrected velocity of circumferential fiber shortening (circ/sec), ΔNTG and ΔTG = post-pacing minus pre-pacing for NTG and TG, respectively.