Development and validation of a simple risk score to predict the need for permanent pacing after cardiac valve surgery
Bruce A. Koplan, MD*,*,
William G. Stevenson, MD, FACC*,
Laurence M. Epstein, MD, FACC*,
Sary F. Aranki, MD and
William H. Maisel, MD, MPH*
* Cardiac Arrhythmia Service/Division of Cardiology, Brigham and Women’s Hospital, Boston, Massachusetts, USA
Division of Cardiac Surgery, Brigham and Women’s Hospital, Boston, Massachusetts, USA
View larger version (28K):
[in a new window]
|
Figure 1 Univariate risk of postoperative permanent pacing in the prediction group based on preoperative electrocardiogram. The overall risk of permanent pacing for the cohort was 5.5%. A-fib = atrial fibrillation; LBBB = left bundle branch block; N = number who received postoperative permanent pacemaker/number with given characteristic; PR = PR interval; RBBB = right bundle branch block.
|
|
View larger version (25K):
[in a new window]
|
Figure 2 Univariate risk of postoperative permanent pacing based on type of valve surgery performed. The overall risk of permanent pacing for the cohort was 5.5%. AV = aortic valve; MV = mitral valve; N = number who received postoperative permanent pacemaker/number with given characteristic; TV = tricuspid valve.
|
|
View larger version (20K):
[in a new window]
|
Figure 3 Percent of patients in the validation group who required postoperative permanent pacing, grouped by risk score. The percentage of patients in each group is listed at the bottom.
|
|
View larger version (18K):
[in a new window]
|
Figure 4 Incidence of permanent pacing in the validation group in "low-," "moderate-," and "high-" risk subjects based on preoperative scores of 0 to 1, 2 to 3, and  4, respectively.
|
|
|
