Table 2.
Comparison of NT-proBNP levels (pg/mL)
| QRS Duration | Pacing Site | BMI | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All patients (n = 19) | p value | < 150ms (n = 12) | ≥ 150ms (n = 7) | p value | RA* (n = 8) | Physiologic† (n = 4) | RV‡ (n = 7) | p value | < 30 (n = 10) | ≥ 30 (n = 9) | P value | |
| Visit A (Baseline) | 915±920 | 1029±1114 | 719±437 | 0.5 | 484±449 | 1363±1033 | 1152±1150 | 0.21 | 1159±1164 | 644±469 | 0.23 | |
| Visit B (80bpm) | 815±731 | 729±791 | 963±643 | 0.51 | 495±439 | 781±775 | 1201±875 | 0.18 | 843±851 | 785±620 | 0.87 | |
| A-B Absolute Change in NT-proBNP | −100±452 | 0.35 | −300±410 | 243±294 | <0.01 | 12±143 | −582±410 | 49±554 | 0.04 | −316±466 | 141±301 | 0.02 |
| Visit C# (Baseline) | 911±922 | 868±1037 | 1015±648 | 0.78 | 366±181 | 1352±1465 | 1254±824 | 0.12 | 1082±1116 | 668±528 | 0.38 | |
| B-C Absolute Change in NT-proBN P | 53±493 | 0.66 | 139±546 | −151±284 | 0.28 | −74±345 | 572±692 | −143±254 | 0.04 | 239±495 | −211±377 | 0.04 |
| A-C Absolute Change in NT-proBN P | −78±475 | 0.51 | −161±512 | 123±331 | 0.27 | −110±379 | −11±576 | −84±587 | 0.95 | −78±531 | −77±422 | 0.99 |
Values are mean ± SD
*
RA = Right atrial appendage pacing
†
physiologic = His/Bachmann’s bundle pacing
‡
RV = Right ventricular apical septum pacing
#
As one patient did not complete visit C, all analyses involving data from visit C included n = 18 patients