Number of patients | 54 | 60 | 63 |
Age (years) | 74 (9) | 74 (9) | 74 (99 |
Women | 31 | 34 | 39 |
Mean follow up (years) | 3.1 (1.3) | 2.8 (1.5) | 2.8 (1.4) |
Blood pressure (mm Hg) |
Systolic | 145 (24) | 139 (22) | 144 (22) |
Diastolic | 80 (13) | 75 (12) | 80 (10) |
Arrhythmia indicating pacemaker treatment |
Sinus bradycardia | 8 | 5 | 11 |
Sino atrial block | 19 | 17 | 16 |
Brady-tachy syndrome | 27 | 38 | 36 |
Symptoms indicating pacemaker treatment |
Syncope | 19 | 26 | 24 |
Dizzy spells | 34 | 32 | 34 |
Heart failure | 1 | 2 | 5 |
Coronary artery disease | 21 | 25 | 22 |
Diabetes mellitus | 6 | 6 | 7 |
Prior stroke | 2 | 9 | 9 |
NYHA functional class |
I | 32 | 38 | 46 |
II | 18 | 22 | 14 |
III | 2 | | 3 |
IV | 1 | | |
Electrocardiographic parameters |
PQ interval (ms) | 186 (27) | 183 (28) | 184 (27) |
Medication |
β Blocker | 4 | 5 | 7 |
Calcium blocker | 14 | 7 | 11 |
Digoxin | 11 | 9 | 11 |
Sotalol | 7 | 8 | 10 |
Aspirin | 35 | 40 | 36 |
Warfarin | 5 | 5 | 11 |