Eric Oddleifson, a member of the afib patient community, reported from a session at the Heart Rhythm 2009 AF Summit where Dr. James Edgerton presented findings and recommendations on post-procedure monitoring.
After ablation, some doctors rely on patient self-reporting, which can be inaccurate 50% of the time due to silent afib. Through various analyses, Dr. Edgerton reported that a 14-day Holter monitor at regular intervals for a minimum of a year was determined to be most efficacious for post-ablation monitoring.
This is extremely important for determining both the success of the procedure and making decisions regarding discontinuing medication.
If you're considering a procedure, you'll want to read Eric's report.