Effects of head up tilt table test in patients with chronic atrial fibrillation
| Variable | 0–5 minutes before tilt | 0–5 minutes upright position | 5–10 minutes upright position | 10–15 minutes upright position | 0–5 minutes after tilt |
|---|---|---|---|---|---|
| HR (beats/min) | 91 (18.1), 94 | 106 (25.8), 101** | 107 (27.5), 102 | 109 (31.0), 102 | 93 (20.5), 96** |
| SBP (mm Hg) | 129 (17.3), 132 | 126 (22.8), 120 | 126 (21.4), 120 | 126 (21.1), 125 | 128 (20.9), 125 |
| DBP (mm Hg) | 91 (12.5), 95 | 87 (13.0), 82 | 89 (12.4), 87 | 88 (12.8), 85 | 90 (13.2), 85 |
| DACL (ms) | 160 (18.6), 161 | 150 (12.8), 148** | 148 (14.7), 147 | 147 (15.5), 146 | 154 (18.5), 152** |
Values are presented as mean (SD), median.
2-150 p < 0.05, **p < 0.01, all other changes non-significant. Statistical comparison was with the preceding value.
DACL, dominant atrial cycle length; DBP, diastolic blood pressure; HR, heart rate; SBP, systolic blood pressure.