1st cross-sectional evaluation 2nd cross-sectional evaluation P
Implanted pacemaker 4 (4.6%) 8 (9.2%) NS
Resting sinus rhythm 61 (70.1%) 55 (63.2%) NS
Resting junctional rhythm 2 (2.3%) 13 (14.9%) 0.006
Sinus and junctional rhythm 16 (18.4%) 8 (9.2%) NS
Ectopic atrial rhythm 4 (4.6%) 5 (5.7%) NS
Paced rhythm 4 (4.6%) 6 (6.9%) NS
minimum HR* [BPM] median40 (37.8 - 44) median38.5 (35.3 – 42.0) <0.001
mean HR* mean [BPM] mean68.5 (9.2) mean66.3 (9.3) NS
maximum RR interval* [s] median1.64 (1.50 – 1.80) median1.70 (1.53 – 1.99) NS
Table 5: Heart rhythm at first and second evaluation. Data are derived from resting 12-lead ECGs and 24-hour Holter recordings (*), respectively. BPM: Beats Per Minute; HR: Heart Rate.