Table 3.
ECG characteristics of the 209 study patients before and after TAVI
| ECG characteristic |
Pacemaker/ICD implant post-TAVI |
P value | |
|---|---|---|---|
| No (n = 165) | Yes (n = 44) | ||
| Change in QRS duration (ms), median (range) | 18 (−12 to 84) | 52 (−3 to 99) | 0.03 |
| Change in PR interval (ms), median (range) | 4 (−66 to 154) | 7 (−30 to 68) | 0.16 |
| Change in sum of QRS and PR (ms), median (range) | 24 (−30 to 166) | 60 (−16 to 118) | 0.001 |
| Median change in QRS, % (range) | 15.6% (−11.8 to 108.1) | 42.8% (−2.3 to 103.1) | 0.04 |
| Median change in PR, % (range) | 2.4% (−32.0 to 122.2) | 3.7% (−14.0 to 41.9) | 0.17 |
| Median change in sum of QRS and PR, % (range) | 7.1% (−11.5 to 79.8) | 20.2% (−4.0 to 48.8) | 0.004 |
ECG indicates electrocardiographic; ICD, implantable cardioverter defibrillator; TAVI, transcatheter aortic valve implantation.