Table 3.
Clinical Characteristics and MCG Signal Measures in Patients with Focal AF and Nonfocal AF
| Focal AF n = 58 (72) | Nonfocal AF n = 22 (28) | P Value | |
|---|---|---|---|
| Males | 43 (74) | 18 (82) | n.s. |
| Age at time of AF diagnosis | 42 ± 10 | 33 ± 13 | 0.005 |
| AF episode frequency | |||
| > once a week | 43 (73) | 1 (4.5) | <0.001 |
| 1/week–1/month | 14 (24) | 10 (45) | |
| Heart rate (beats/min) | 58 ± 10 | 64 ± 7 | 0.004 |
| PR interval (ms) | 155 ± 23 | 158 ± 20 | n.s. |
| QRS duration (ms) | 99 ± 11* | 102 ± 10 | n.s. |
| QTc (ms) | 401 ± 25 | 399 ± 17 | n.s. |
| T apex – T end interval (ms) | 80 ± 10* | 76 ± 11 | n.s. |
| P duration (ms) | 110 ± 12** | 108 ± 9 | n.s. |
| Pd/PR ratio | 0.71 ± 0.08*** | 0.69 ± 0.07 | n.s. |
| Pd/QRSd ratio | 1.12 ± 0.15*** | 1.07 ± 0.13 | n.s. |
| P RMS (fT) | 98 ± 37 | 78 ± 21* | 0.003 |
| P RMS first 40 (fT) | 71 ± 27 | 72 ± 22 | n.s. |
| P RMS40 (fT) | 81 ± 31 | 59 ± 17** | <0.001 |
The values represent the number (percentage in parentheses) of study subjects or mean ± SD. Student's t‐test and chi‐square test were used for statistics.
*= P < 0.05, **= P < 0.01, ***= P < 0.001 comparing patient group to control group. Abbreviations as in Table 2.