Table 1. Baseline and clinical characteristics of young HCM cases suffering from SCD, in Sweden 2000–2010.
| Characteristics | HCM cases (n = 38) |
|---|---|
| Median age (IQR) age at the time of death, years | 22 years (IQR 14–28) |
| Male/Female gender, n (%) | 31 (81); 7 (19) |
| Past medical history, n (%) | 22 (58) |
|
• Cardiac diagnosis (in total) • Other cardiac pathology • AVNRT • WPW • ASD • Atrial flutter • Unknown cardiomyopathy • Dilated cardiomyopathy |
15 (39) 6 (16) 3 (8) 2 (5) 1 (3) 1 (3) 1 (3) 1 (3) |
| • HCM | 9 (24) |
| Circumstances of death, n (%) | |
| • Sleep | 4 (10) |
| • Rest | 4 (10) |
| • Recreational activity (e.g., walking, gardening, sitting) | 14 (37) |
| • Exercise | 5 (13) |
| • Competitive sports | 7 (18) |
| • Unknown | 4 (10) |
| Witnessed deaths, n (%) | 23 (61) |
| • CPR in witnessed/unwitnessed cases | 23 (100); 7 (88) |
| Place of cardiac arrest, n (%) | |
| • In hospital death | 11 (29) |
| • Out of hospital death | 24 (63) |
| • At home | 13 (34) |
| • Public place | 11 (29) |
| • Unknown | 3 (8) |
| Autopsy, n (%) | 33 (84) |
| • Clinical autopsy | 12 (29) |
| • Forensic autopsy | 21 (55) |
AVNRT; Atrial ventricular-nodal reentry tachycardia. WPW; Wolff-Parkinson-White. ASD; atrial septal defect.