Related Experiment Video
Updated: Jul 26, 2026
Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Atrial fibrillation: prevalence after minimally invasive direct and standard coronary artery bypass
M Hravnak1, L A Hoffman, M I Saul
1Department of Acute/Technical Care, School of Nursing, Medical Archival System, Inc, University of Pittsburgh, Pennsylvania, USA. mhra@pitt.edu
Insights
Minimally invasive direct vision coronary artery bypass grafting (MIDCAB) showed a trend toward lower new-onset atrial fibrillation (AFIB) than standard coronary artery bypass grafting (SCABG). The number of bypasses significantly influenced AFIB prevalence more than surgical approach.
Area of Science:
- Cardiovascular Surgery
- Cardiac Arrhythmias
Background:
- New-onset atrial fibrillation (AFIB) is a common complication after cardiac surgery.
- Comparing AFIB rates between standard coronary artery bypass grafting (SCABG) with cardiopulmonary bypass (CPB) and minimally invasive direct vision coronary artery bypass grafting (MIDCAB) without CPB is crucial for patient outcomes.
Purpose of the Study:
- To compare the prevalence of new-onset AFIB following SCABG versus MIDCAB.
- To analyze AFIB prevalence in SCABG and MIDCAB patients with two or fewer bypasses.
Main Methods:
- Retrospective comparative survey of 814 patients (94 MIDCAB, 720 SCABG).
- New-onset AFIB cases identified using a triangulated electronic method (ICD-9 CM codes, clinical database word search, pharmacy database drug search).
Main Results:
- A trend towards lower AFIB prevalence was observed in MIDCAB (23.4%) compared to SCABG (33.1%) (p=0.059).
- AFIB prevalence was similar between MIDCAB (23.4%) and SCABG with ≤2 bypasses (24.5%) (p=0.860).
- ICD-9 CM codes underestimated AFIB prevalence, identifying only 56.9% of cases.
Conclusions:
- The number of bypassed vessels appears to be a more significant factor in AFIB prevalence than the surgical approach or CPB use.
- Relying solely on ICD-9 CM codes for AFIB identification in retrospective studies can lead to underestimation.
Background:
This study identified and compared the prevalence of new-onset atrial fibrillation (AFIB) following standard coronary artery bypass grafting (SCABG) with cardiopulmonary bypass (CPB) and minimally invasive direct vision coronary artery bypass grafting (MIDCAB) without CPB. A further comparison was made between AFIB prevalence in SCABG and MIDCAB subjects with two or fewer bypasses.
Methods:
This is a retrospective, comparative survey. Patients with new-onset AFIB who underwent SCABG or MIDCAB alone were identified electronically using a triangulated method (International Classification of Diseases, 9th revision, Clinical Modification [ICD-9 CM] code; clinical database word search; and pharmacy database drug search).
Results:
The total sample (n = 814; 94 MIDCAB, 720 SCABG) exhibited a trend toward lower AFIB prevalence in MIDCAB (23.4%) versus SCABG (33.1%) subjects (p = 0.059). AFIB prevalence in the SCABG subset with two or less vessel bypasses (n = 98; n = 18 single vessel, n = 80 double vessels) and MIDCAB subjects (n = 94; n = 90 single vessels, n = 4 double vessels) was almost identical (SCABG subset 24.5% versus MIDCAB 23.4%, p = 0.860). Slightly more than half (56.9%) of new-onset AFIB subjects were identified by ICD-9 CM codes, with the remainder by word search (37.7%) or procainamide query (5.4%).
Conclusions:
In this sample, the number of vessels bypassed seemed to have a greater influence on AFIB prevalence than the application of CPB or the surgical approach. Retrospective identification of AFIB cases by ICD-9 CM code grossly underestimated AFIB prevalence.
More Related Videos
08:50Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
Published on: March 26, 2018
08:42Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
Published on: February 11, 2022
