Total (n = 32) | No LVOT obstruction (n = 26) | LVOT obstruction (n = 6) | P-value | |
---|---|---|---|---|
Age (years), mean ± SD | 66 ± 15 | 64 ± 15 | 77 ± 7 | 0.047* |
Female, n (%) | 30 (93.8) | 24 (92.3) | 6 (100) | 1.000 |
Risk factors, n (%) | ||||
Hypertension | 18 (56.2) | 13 (50.0) | 5 (83.3) | 0.196 |
Hypercholesterolemia | 8 (25.0) | 5 (19.2) | 3 (50.0) | 0.296 |
Diabetes mellitus | 3 (9.4) | 2 (7.7) | 1 (16.7) | 1.000 |
Trigger, n (%) | ||||
Physical stress | 13 (59.1) | 12 (46.2) | 1 (16.7) | 0.387 |
Emotional stress | 9 (40.9) | 8 (30.8) | 1 (16.7) | 0.850 |
Presenting symptom, n (%) | ||||
Chest pain | 17 (53.1) | 15 (57.7) | 2 (33.3) | 0.383 |
Respiratory distress | 8 (25.0) | 7 (26.9) | 1 (16.7) | 1.000 |
Cardiogenic shock | 5 (15.6) | 2 (7.7) | 3 (50.0) | 0.034* |
VT/VF | 2 (6.2) | 2 (7.7) | 0 (0.0) | 1.000 |
ECG, n (%) or mean ± SD | ||||
ST-elevation | 17 (53.1) | 13 (50.0) | 4 (66.7) | 0.659 |
ST-depression/negT | 14 (43.8) | 12 (46.2) | 2 (33.3) | 0.672 |
QRS (ms) | 97 ± 10 | 98 ± 10 | 92 ± 7 | 0.179 |
QTc (ms) | 421 ± 30 | 418 ± 27 | 435 ± 43 | 0.223 |
TnT (ng/mL), mean ± SD | 0.93 ± 0.90 | 0.99 ± 0.96 | 0.68 ± 0.50 | 0.462 |
TTE, n (%) or mean ± SD | ||||
LVEF (%)# | 40.5 ± 10.3 | 41.1 ± 11.0 | 38.0 ± 5.8 | 0.512 |
IVS (mm) | 10.8 ± 1.7 | 10.5 ± 1.4 | 12.0 ± 2.1 | 0.044* |
Septal bulge | 12 (37.5) | 7 (26.9) | 5 (83.3) | 0.018* |
SAM | 6 (18.8) | 0 (0.0) | 6 (100) | < 0.001* |
MR grade | 1.25 ± 0.73 | 1.0 ± 0.6 | 2.2 ± 0.7 | < 0.001* |
Therapeutic options, n (%) | ||||
Inotropics i.v. | 9 (28.1) | 7 (26.9) | 2 (33.3) | 1.000 |
Beta-blocker i.v. | 2 (6.2) | 0 (0.0) | 2 (33.3) | 0.030* |
IABP | 9 (28.1) | 7 (26.9) | 2 (33.3) | 1.000 |
Recuperation, mean ± SD | ||||
LVEF ≥55% (days) | 19 ± 12 | 18 ± 11 | 23 ± 16 | 0.479 |