TABLE 1.
Clinical Characteristics of Population
| Characteristic | Overall | FIRM+ Conventional Index Case |
Conventional Index Case |
P |
|---|---|---|---|---|
| No. FIRM mapped | 29 | 9 | 20 | - |
| Age (years) | 60 ± 8 | 61 ± 6 | 60 ± 9 | 0.81 |
| AF type | 0.63 | |||
| Paroxysmal | 1 | 5 | ||
| Persistent | 8 | 15 | ||
| Presenting rhythm | 0.31 | |||
| AF | 19 | 7 | 12 | |
| Sinus | 10 | 2 | 8 | |
| LA diameter (mm) | 49 ± 8 | 55 ± 8 | 45 ± 6 | <0.01 |
| Left ventricular | 53 ± 12 | 45 ± 14 | 57 ± 8 | <0.01 |
| Comorbid conditions | ||||
| Hypertension | 21 | 7 | 14 | 1.00 |
| Diabetes | 11 | 5 | 6 | 0.24 |
| BMI (mean) | 33 | 33 | 33 | 0.93 |
| Obstructive sleep apnea | 17 | 7 | 10 | 0.23 |
| Congestive heart failure | 15 | 7 | 8 | 0.11 |
| GFR, mL/min (mean) | 78 | 81 | 76 | 0.50 |
| Magnesium, mg/dL (mean) | 2 | 2 | 2 | 0.20 |
Statistical comparison between groups was done using Mann-Whitney U for continuous variables and Fisher exact test for contingency tables.
P < 0.05 compared to initial case.