Table 1 Baseline and surgical characteristics
Variables | Value |
|---|---|
Demographics | |
Age (years) | 56.8 ± 12.3 |
Gender (Females/Males) | 85/83 |
Obesity (Body mass index > 30 kg/m2) | 9 (5.4%) |
Concomitant diseases | |
Diabetes mellitus | 16 (9.5%) |
Coronary artery disease | 7 (4.2%) |
Hypertension | 67 (39.9%) |
Chronic obstructive pulmonary disease | 13 (7.7%) |
Cerebrovascular disease | 9 (5.4%) |
Family history of HCM | 16 (9.5%) |
Family history of sudden death | 6 (3.6%) |
Preoperative cardiac status | |
NYHA class | |
II | 23 (13.7%) |
III | 120 (71.4%) |
IV | 25 (14.9%) |
Previous alcohol septal ablation | 9 (5.4%) |
AF | 14 (8.3%) |
Left BBB | 3 (1.8%) |
Right BBB | 4 (2.4%) |
Preoperative TTE data | |
Maximum LVOT gradient (mmHg) | 94.4 ± 22.6 |
Interventricular septal thickness (mm) | 18.3 ± 3.1 |
SAM | 168 (100%) |
Degree of MR (median, IQR) | 3.0 (2.0–3.0) |
Moderate or more MR | 97 (57.7%) |
Midventricular obstruction | 7 (4.2%) |
LVEF (%) | 67.0 ± 4.2 |
LVEDD (mm) | 44.6 ± 4.5 |
Mitral subvalvular anomalies | 45 (26.8%) |
False cords | 11 (6.5%) |
Retracted secondary chordae | 29 (17.3%) |
PM abnormalities | 13 (7.7%) |
Surgical characteristics | |
ACC time (min) | 36.0 ± 8.1 |
Transaortic myectomy alone | 123 (73.2%) |
Myectomy plus sub-MV management | 45 (26.8%) |
False cords cutting | 11 (6.5%) |
Retracted secondary chordae cutting | 29 (17.3%) |
PM release and/or resection | 13 (7.7%) |