Table 1 Clinical characteristics
Characteristic | Young adults 20–34 years old (n = 92; 36%) | Adults 35–45 years old (n = 167; 64%) | p value |
|---|---|---|---|
Males, n (%) | 53 (58) | 118 (71) | 0.034 |
Ventricular tachyarrhythmias, n (%) | |||
Ventricular tachycardia | 54 (59) | 79 (47) | |
Non-sustained VT | 27 (50) | 47 (60) | 0.279 |
Sustained VT | 27 (50) | 32 (40) | |
Ventricular fibrillation | 38 (41) | 88 (53) | 0.079 |
Cardiopulmonary resuscitation, n (%) | 29 (31) | 76 (45) | 0.028 |
In-hospital | 15 (16) | 57 (34) | 0.009 |
Out-of-hospital | 14 (15) | 19 (11) | |
Cardiovascular risk factors, n (%) | |||
Arterial hypertension | 7 (8) | 44 (26) | 0.001 |
Diabetes mellitus | 3 (3) | 13 (8) | 0.148 |
Hyperlipidemia | 6 (7) | 31 (19) | 0.008 |
Smoking | 20 (22) | 57 (34) | 0.037 |
Cardiac family history | 14 (15) | 34 (20) | 0.308 |
Prior medical history, n (%) | |||
Prior heart failure | 4 (4) | 16 (10) | 0.131 |
Atrial fibrillation | 6 (7) | 19 (11) | 0.205 |
Prior stroke | 0 (0) | 2 (1) | 0.540 |
COPD | 0 (0) | 1 (0.6) | 1.000 |
Chronic kidney disease | 16 (17) | 54 (33) | 0.007 |
Laboratory data, mean ± SEM | |||
Hemoglobin [g/dl] | 13.7 ± 2.2 | 14.1 ± 1.7 | 0.093 |
Potassium [mg/dl] | 4.1 ± 0.1 | 4.3 ± 0.1 | 0.603 |
Creatinine [mg/dl] | 1.0 ± 0.0 | 1.7 ± 0.4 | 0.093 |
Medication at discharge, n (%) | |||
Beta blocker | 48 (58) | 89 (65) | 0.290 |
ACE inhibitor/ARB | 20 (24) | 63 (46) | 0.001 |
Aldosterone antagonist | 4 (5) | 10 (7) | 0.465 |
Digitalis | 1 (1) | 7 (5) | 0.134 |
Amiodarone | 4 (4) | 6 (4) | 0.879 |
Statin | 9 (11) | 52 (38) | 0.001 |
Patients discharged alive, n (%) | 83 (90) | 137 (82) | 0.078 |
Hospitalization time in days, median (IQR) | |||
Total hospitalization time | 6 (1–52) | 8 (1–55) | 0.410 |
ICU time | 1 (0–28) | 2 (0–31) | 0.523 |
Follow-up time in days, mean; median (range) | 2217; 2338 (0–4608) | 2039; 1931 (9–5095) | 0.262 |