Baseline data
| Overall cohort | Aborted SCA event | No event | |
|---|---|---|---|
| n | 52 | 16 | 36 |
| Age, years | 50.1±15.8 | 51.9±14.1 | 49.3±16.7 |
| Male | 33 (63.5%) | 10 (62.5%) | 23 (63.8%) |
| Sudden death risk factors | |||
| Mean (range) | 1.29 (1-3) | 1.5 (1-3) | 1.2 (1-3) |
| 1 | 37 (71.1%) | 8 (50.0%) | 28 (77.8%) |
| 2+ | 15 (28.8%) | 8 (50.0%) | 8 (22.2%) |
| Family history of SCD | 21 (41.1%) | 8 (50.0%) | 13 (36.1%) |
| Unexplained syncope | 13 (25.0%) | 4 (25.0%) | 9 (25.0%) |
| LV wall thickness >30 mm | 9 (17.3%) | 3 (18.8%) | 6 (16.6%) |
| Non-sustained VT on ambulatory holter | 24 (52.1%) | 9 (56.2%) | 15 (41.6%) |
| Percentage of risk of SCD at 5 years—HCM risk-SCD* | 6.5±3.6 | 7.4±4.3 | 6.3±3.7 |
| NYHA functional class | |||
| I | 18 (34.6%) | 5 (31.3%) | 13 (36.1%) |
| II | 20 (38.4%) | 7 (43.8%) | 13 (36.1%) |
| III-IV | 14 (26.9%) | 4 (25.0%) | 10 (27.8%) |
| Surgical myomectomy | 9 (17.3%) | 3 3 (18.8%) | 6 6 (16.6%) |
| Alcohol ablation | 3 (5%) | 0 (0%) | 3 (8.3%) |
Values are n (%), or mean±SD.
*Data on % risk of SCD at 5 years—HCM risk-SCD were available for 44 patients.
HCM, hypertrophic cardiomyopathy; NYHA, New York Heat Association; SCA, sudeen cardiac arrest; SCD, sudden cardiac death; VT, ventricular tachycardia.