Atrial arrhythmia episodes
|
AV block (n = 8) |
SS syndrome (n = 5) |
BT syndrome (n = 6) |
CS syndrome (n = 3) |
Total (n = 22) | |
| Atrial overdrive, phase IVa or IVb | |||||
| Heart rate (beats/min)3-152 | 84 (5) | 68 (6) | 76 (5) | 83 (7) | 79 (7) |
| Patients without AA | 4 (50.0%) | 5 (100%) | 2 (33.3%) | 3 (100%) | 14 (63.6%) |
| Patients with AA | 4 (50.0%) | 0 | 4 (66.6%) | 0 | 8 (36.4%) |
| Number of AA episodes3-151 | 5 (2) | 0 | 68 (97) | 0 | 14 (27) |
| Proportion of atrial pacing (%)3-153 | 66 (4) | 71 (8) | 63 (9) | 65 (3) | 66 (3) |
| Total duration of AA episodes (hours) | 4 (2) | – | 104 (126) | – | 30 (78) |
| During of longest AA episode (min) | 81 (71) | – | 112 (81) | – | 41 (72) |
| Atrial overdrive and propafenone, phase IVa or IVb | |||||
| Heart rate (beats/min)3-152 | 78 (5)3-150 | 74 (5)3-150 | 75 (6) | 82 (6) | 77 (6) |
| Patients without AA | 5 (62.5%) | 4 (80%) | 3 (50%) | 3 (100%) | 15 (68.2%) |
| Patients with AA | 3 (37.5%) | 1 (20%) | 3 (50%) | 0 | 7 (31.8%) |
| Number of AA episodes3-151 | 3 (1) | 1 | 68 (53) | 0 | 13 (28) |
| Proportion of of atrial pacing (%)3-153 | 62 (12) | 78 (12) | 66 (7) | 63 (7) | 66 (11) |
| Total duration of AA episodes (h) | 2 (3) | 0.2 | 57 (85)3-150 | – | 29 (63) |
| During of longest AA episode (min) | 69 (72) | 28 | 91 (102) | – | 31 (58) |
Data are mean (SD) or percentage.
↵3-150 p < 0.05 between patients with atrial overdrive and patients with atrial overdrive and propafenone.
↵3-151 Number determined by the fallback count in the memory of the pacemaker.
↵3-152 Ventricular.
↵3-153 Percentage of all atrial beats.
AA, atrial arrhythmia; AV, atrioventricular; BT, brady-tachy; CS, carotid sinus; SS, sick sinus.