Table 2.
Agreement with various left bundle branch block (LBBB) definitions among aortic valve implantation (AVI)-induced LBBB (LBBBAVI) and matched control LBBB patients (LBBBcontrol)
| LBBBAVI (n = 59) |
LBBBcontrol (n = 118) |
p-value | ||
|---|---|---|---|---|
| LBBB definition features | ||||
| QRS duration ≥ 120 ms | 59 (100) | 118 (100) | NP | |
| QRS duration ≥ 130 ms | 58 (98) | 101 (86) | 0.007 | |
| QRS duration ≥ 130 ms in females and ≥ 140 ms in males | 56 (95) | 95 (81) | 0.012 | |
| QS or rS in V1 | 59 (100) | 118 (100) | NP | |
| Absence of Q waves in V5‑6 | 59 (100) | 118 (100) | NP | |
| Absence of Q waves in V5‑6 and I | 57 (97) | 111 (94) | 0.720 | |
| Absence of Q waves in V5‑6, I and aVL | 50 (85) | 92 (78) | 0.286 | |
| Presence of Q waves in aVL | 9 (15) | 26 (22) | 0.286 | |
| R wave peak time > 60 ms in V5‑6 | 16 (27) | 20 (17) | 0.113 | |
| R wave peak time > 60 ms in V6 only | 30 (51) | 60 (51) | 1.000 | |
| Notching/slurring in V5‑6, I or aVL | 59 (100) | 100 (85) | 0.001 | |
| Notching/slurring in V5‑6, I and aVL | 32 (54) | 37 (31) | 0.003 | |
| Notching/slurring in ≥ 2 leads (I, aVL, V1‑2, V5-6) | 59 (100) | 93 (79) | < 0.001 | |
| LBBB definitions | ||||
| ESC 2013 definition | 59 (100) | 100 (85) | 0.001 | |
| Strauss definition | 56 (95) | 80 (68) | < 0.001 | |
| AHA 2009 definition | 10 (17) | 8 (7) | 0.035 | |
| AHA 2009 definition variations | ||||
| Absence of Q waves in V5-V6‑I and R wave peak time > 60 ms in V5‑6 | 10 (17) | 8 (7) | 0.035 | |
| Absence of Q waves in V5-V6-I-aVL and R wave peak time > 60 ms in V5‑6 | 10 (17) | 8 (7) | 0.035 | |
| Absence of Q waves in V5-V6‑I and no R wave peak time criterion | 31 (53) | 37 (31) | 0.006 | |
| Absence of Q waves in V5-V6-I-aVL and no R wave peak time criterion | 28 (48) | 35 (30) | 0.020 | |
Values are number (%)
AHA American Heart Association, ESC European Society of Cardiology, NP not possible