Table 1 Baseline characteristics of the study cohort.
From: Potassium channel gene mutations rarely cause atrial fibrillation
Mean ± SD or n (Percentage) | |
|---|---|
Total | 96 |
Age at enrollment (years) | 56.1 ± 10.3 |
Age at onset of AF (years) | 46.3 ± 12.2 |
Paroxysmal AF | 78 (81.3) |
Heart rate (bpm) | 67 ± 14.1 bpm |
Systolic blood pressure (mmHg) | 126.3 ± 23.4 |
Diastolic blood pressure (mmHg) | 77.3 ± 9.5 |
Electrocardiogram | |
PR interval (ms) | 176 ± 32.0 |
QRS interval (ms) | 95.6 ± 15.3 |
QTc interval (ms) | 412 ± 41.8 |
Echocardiogram | |
Left atrial size (mm) | 39.9 ± 7.0 |
Ejection fraction (percent) | 62.0 ± 7.2 |
Ethnicity | |
Caucasian | 92 (96) |
African-American | 1 (1) |
Asian | 1 (1) |
American Indian | 1 (1) |
Middle Eastern | 1 (1) |