Table 2.
Characterization of post-CBA atrial flutters, defined by time of first recognition
| Time to first recognition after index CBA-PVI | Location* | Number of cases |
|---|---|---|
| < 3 months | 18 | |
| Left atrium, unspecified | 3 | |
| Perimitral annulus | 1 | |
| Left atrium, multifocal, RSPV, and mitral annulus | 1 | |
| Identified by surface tracing, unable to localize | 13 | |
| 3–12 months | 12 | |
| CTI-dependent | 6 | |
| Left atrium, dependent on mitral roof line near RSPV | 1 | |
| Left atrium, multifocal, left atrial roof, and mitral annulus | 1 | |
| Identified by surface tracing, unable to localize | 4 | |
| 12 months | 1 | |
| Left atrium, unspecified | 1 | |
| 18 months | 6 | |
| CTI-dependent | 2 | |
| Multifocal, CTI-dependent and left atrium | 1 | |
| Left atrium, left atrial roof | 1 | |
| Identified by surface tracing, unable to localize | 2 | |
| 24 months | 6 | |
| CTI-dependent | 1 | |
| Left atrium, unspecified | 1 | |
| Identified by surface tracing, unable to localize | 4 | |
| Total | 43 |
CTI cavotricuspid isthmus, RSPV right superior pulmonary vein
*
Atrial flutters that are enumerated as “Identified by surface tracing, unable to localize” were transient (spontaneously converted to sinus rhythm), diagnosed by electrocardiogram or Holter/event monitor, and/or managed with electrical cardioversion before mapping could occur