Table 3. Results of the atrial and ventricular pacing study.
| Pacing cycle length | Pacing site and device | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Atrial pacing | Ventricular pacing | ||||||||
| Apple | Galaxy | Fitbit | p value | Apple | Galaxy | Fitbit | p value | ||
| 600 ms (100 bpm) | |||||||||
| Attempted | 33 | 30 | 29 | 29 | 25 | 25 | |||
| Within ±5 bpm | 33 (100) | 29 (97) | 27 (93) | 0.198 | 29 (100) | 25 (100) | 20 (80) | 0.007 | |
| Within ±10 bpm | 33 (100) | 29 (97) | 27 (93) | 0.198 | 29 (100) | 25 (100) | 22 (88) | 0.010 | |
| 500 ms (120 bpm) | |||||||||
| Attempted | 32 | 29 | 28 | 32 | 29 | 27 | |||
| Within ±5 bpm | 31 (97) | 26 (90) | 18 (64) | 0.000 | 32 (100) | 27 (93) | 20 (74) | 0.002 | |
| Within ±10 bpm | 31 (97) | 28 (97) | 20 (71) | 0.062 | 32 (100) | 27 (93) | 23 (85) | 0.025 | |
| 430 ms (140 bpm) | |||||||||
| Attempted | 29 | 22 | 24 | 33 | 29 | 29 | |||
| Within ±5 bpm | 26 (90) | 20 (91) | 19 (79) | 0.005 | 33 (100) | 28 (97) | 18 (62) | <0.001 | |
| Within ±10 bpm | 26 (90) | 20 (91) | 21 (88) | 0.032 | 33 (100) | 28 (97) | 20 (69) | 0.005 | |
| 380 ms (160 bpm) | |||||||||
| Attempted | 19 | 16 | 17 | 31 | 29 | 27 | |||
| Within ±5 bpm | 18 (95) | 14 (88) | 12 (71) | 0.016 | 31 (100) | 24 (83) | 10 (37) | <0.001 | |
| Within ±10 bpm | 18 (95) | 14 (88) | 12 (71) | 0.045 | 31 (100) | 24 (83) | 13 (48) | <0.001 | |
| 330 ms (180 bpm) | |||||||||
| Attempted | 9 | 10 | 13 | 31 | 28 | 26 | |||
| Within ±5 bpm | 7 (78) | 8 (80) | 6 (46) | * | 28 (90) | 20 (71) | 7 (27) | <0.001 | |
| Within ±10 bpm | 8 (89) | 8 (80) | 6 (46) | 28 (90) | 20 (71) | 8 (31) | <0.001 | ||
| 300 ms (200 bpm) | |||||||||
| Attempted | 7 | 7 | 8 | 31 | 27 | 24 | |||
| Within ±5 bpm | 5 (71) | 3 (43) | 3 (38) | * | 23 (74) | 20 (74) | 6 (25) | 0.002 | |
| Within ±10 bpm | 5 (71) | 3 (43) | 3 (38) | 23 (74) | 20 (74) | 7 (29) | 0.005 | ||
Values are presented as number of patients (%).
*Statistical analysis not applicable.