Postoperative atrial fibrillation after CABG was associated with higher 30-day mortality (1.9% vs 0.4%; P=0.014) but similar 7-year survival compared to patients without the sequela.
Cohort (n=1,248)
No
Does postoperative atrial fibrillation impact long-term survival and clinical outcomes in military veterans undergoing CABG?
In military veterans undergoing CABG, postoperative atrial fibrillation increases short-term mortality and length of hospital stay but does not significantly impact 7-year survival.
Little is known about the frequency and clinical implications of postoperative atrial fibrillation in military veterans who undergo coronary artery bypass grafting (CABG). We examined long-term survival data, clinical outcomes, and associated risk factors in this population. We retrospectively reviewed baseline, intraoperative, and postoperative data from 1,248 consecutive patients with similar baseline risk profiles who underwent primary isolated CABG at a Veterans Affairs hospital from October 2006 through March 2013. Multivariable logistic regression identified predictors of postoperative atrial fibrillation. Kaplan-Meier analysis was used to evaluate long-term survival (the primary outcome measure), morbidity, and length of hospital stay. Postoperative atrial fibrillation occurred in 215 patients (17.2%). Independent predictors of this sequela were age ≥65 years (odds ratios 95% confidence intervals, 1.7 1.3–2.4 for patients of age 65–75 yr and 2.6 1.4–4.8 for patients >75 yr) and body mass index ≥30 kg/m 2 (2.0 1.2–3.2). Length of stay was longer for patients with postoperative atrial fibrillation than for those without (12.7 ± 6.6 vs 10.3 ± 8.9 d; P ≤0.0001), and the respective 30-day mortality rate was higher (1.9% vs 0.4%; P =0.014). Seven-year survival rates did not differ significantly. Older and obese patients are particularly at risk of postoperative atrial fibrillation after CABG. Patients who develop the sequela have longer hospital stays than, but similar long-term survival rates to, patients who do not.
Omer et al. (Sat,) conducted a cohort in Coronary artery disease requiring CABG (n=1,248). Postoperative atrial fibrillation vs. No postoperative atrial fibrillation was evaluated on Long-term survival. Postoperative atrial fibrillation after CABG was associated with higher 30-day mortality (1.9% vs 0.4%; P=0.014) but similar 7-year survival compared to patients without the sequela.