Background
Methods
Study population
Electroanatomical mapping
ECG assessment
Statistical analysis
Results
Patient characteristics
Variable | Value |
---|---|
Men | 16 (64) |
Age | 72 ± 10 |
Ischaemic aetiology | 18 (72) |
NYHA class | |
II | 15 (60) |
III | 9 (36) |
IV | 1 (4) |
LVEF (%) | 29 ± 5 |
QRS duration (ms) | 158 ± 23 |
Results of electroanatomical mapping
Variable | Delayed LV activation (n = 12) | No delayed LV activation (n = 11) |
P
|
---|---|---|---|
Maximal LVLW-AT (ms) | 133 (± 20) | 100 (± 19) | |
Maximal LVLW-AT (% of QRS) | 83 (± 5) | 64 (± 9) | |
Region of maximal LVLW-AT | |||
Basal anterolateral | 7 (58.3) | 2 (18.2) | 0.09 |
Basal inferolateral | 4 (33.3) | 3 (27.3) | 1.00 |
Mid anterolateral | 1(8.3) | 4 (36.4) | 0.16 |
Mid inferolateral | 0 | 2 (18.2) | 0.22 |
ECG parameters in patients with and without delayed LV lateral wall activation
Variable | Delayed LVLW activation (n = 12) | No delayed LVLW activation (n = 11) |
P
|
---|---|---|---|
QRS duration (ms) | 159 (± 19) | 157 (± 27) | 0.46 |
Left axis deviation | 5 (46) | 6 (55) | 1.00 |
Right axis deviation | 1 (9) | 0 | 1.00 |
LAFB | 4 (36) | 6 (55) | 0.67 |
LPFB | 1 (9) | 0 | 1.00 |
QRS fragmentation | 7 (64) | 5 (46) | 0.67 |
Region of QRS fragmentation | |||
Anterior | 2 (18) | 2 (17) | 1.00 |
Inferior | 4 (33) | 3 (27) | 1.00 |
Lateral | 5 (42) | 2 (18) | 0.37 |