1. Ineffectiveness and potential proarrhythmia of atrial pacing for atrial fibrillation prevention after coronary artery bypass grafting 
Mina K Chung, MD, Ralph S Augostini, MD, Craig R Asher, MD, Duane P Pool, MD, Thomas A Grady, MD, Magued Zikri, MD, Susan M Buehner, RN, Martin Weinstock, MD, Patrick M McCarthy, MD 
The Annals of Thoracic Surgery 
Volume 69, Issue 4, Pages (April 2000)
DOI: /S (99)

2. Fig 1
Study design. (AF = atrial fibrillation; CABG = coronary artery bypass grafting; HR = heart rate.)
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 2
Incidence of atrial fibrillation in paced and control groups. Atrial fibrillation incidence with each postoperative day (POD) is shown for the Paced and Control groups. No atrial fibrillation occurred on postoperative days 6 or 7.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

4. Fig 3
Atrial premature depolarization frequency and postoperative atrial fibrillation (AF). Atrial premature depolarization (APD) frequency normalized per 24 hours is shown for the Total, Control, and Paced groups. p values were derived using nonparametric Mann-Whitney tests.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

5. Fig 4
Atrial premature depolarization (APD) frequency in Paced versus Control group patients. Atrial premature depolarization frequency normalized for more than 24-hour periods is shown over postoperative days (POD) 1 through 4 and averaged over postoperative days 1 to 4 (Total) for the Paced versus Control groups. The mean atrial premature depolarization frequency was significantly higher in the Paced group overall and on postoperative day 1 and 2. p values were derived using nonparametric Mann-Whitney tests.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )