New-Onset Atrial Fibrillation Following Isolated Coronary Artery Bypass Grafting: Is Pulmonary Hypertension a Risk...

Area of Science:

• Cardiology
• Thoracic Surgery
• Critical Care Medicine

Background:

• Postoperative new-onset atrial fibrillation (NOAF) is a common complication following cardiac surgery.
• Pulmonary hypertension (PH) is increasingly recognized as a significant comorbidity in cardiovascular disease.

Purpose of the Study:

• To investigate whether pulmonary hypertension is an independent risk factor for NOAF after isolated coronary artery bypass grafting (CABG).
• To identify clinical predictors of NOAF in patients undergoing CABG.

Main Methods:

• Retrospective analysis of 854 patients undergoing isolated CABG with preoperative pulmonary artery pressure (PAP) measurement.
• Comparison of demographic, clinical, and treatment parameters between patients with and without post-CABG NOAF.
• Multivariate regression analysis to identify independent predictors of NOAF.

Main Results:

• Elevated mean systolic PAP (OR: 1.027) and the presence of PH (≥ 30 mmHg, OR: 1.659) were independent risk factors for post-CABG NOAF.
• Other identified risk factors included older age, higher EuroSCORE, chronic obstructive pulmonary disease (COPD) (OR: 2.033), and longer ventilation support duration (OR: 1.059).

Conclusions:

• Increased PAP and PH are significant predictors of NOAF post-CABG.
• Identifying patients with PH and other risk factors like COPD can guide preventative strategies for NOAF.
• Further prospective studies are needed to validate these findings.