Advanced age (≥ 80 years) was associated with a significantly higher incidence of postoperative atrial fibrillation compared to ages 70-79 (42.9% vs 28.8%, P=0.017) following isolated aortic valve replacement.
Cross-Sectional (n=348)
No
Does advanced age (≥80 years) increase the incidence of post-operative atrial fibrillation compared to age 70-79 years in patients undergoing isolated aortic valve replacement?
Post-operative atrial fibrillation is highly prevalent in patients >70 years undergoing aortic valve replacement, particularly in those ≥80 years, and is associated with increased ICU and hospital length of stay.
Absolute Event Rate: 42.9% vs 28.8%
p-value: p=0.017
OBJECTIVE: This study aims to describe the correlation between age and occurrence of atrial fibrillation after aortic stenosis surgery in the elderly as well as evaluate the influence of atrial fibrillation on the incidence of strokes, hospital length of stay, and hospital mortality. METHODS: Cross-sectional retrospective study of > 70 year-old patients who underwent isolated aortic valve replacement. RESULTS: 348 patients were included in the study (mean age 76.8±4.6 years). Overall, post-operative atrial fibrillation was 32.8% (n=114), but it was higher in patients aged 80 years and older (42.9% versus 28.8% in patients aged 70-79 years, P=0.017). There was borderline significance for linear correlation between age and atrial fibrillation (P=0.055). Intensive Care Unit and hospital lengths of stay were significantly increased in atrial fibrillation (P<0.001), but there was no increase in mortality or stroke associated with atrial fibrillation. CONCLUSION: Post-operative atrial fibrillation incidence in aortic valve replacement is high and correlates with age in patients aged 70 years and older and significantly more pronounced in patients aged 80 years. There was increased length of stay at Intensive Care Unit and hospital, but there was no increase in mortality or stroke. These data are important for planning prophylaxis and early treatment for this subgroup.
Filho et al. (2014) conducted a cross-sectional in Aortic stenosis requiring isolated aortic valve replacement (n=348). Advanced age (≥ 80 years) vs. Age 70-79 years was evaluated on Postoperative atrial fibrillation (p=0.017). Advanced age (≥ 80 years) was associated with a significantly higher incidence of postoperative atrial fibrillation compared to ages 70-79 (42.9% vs 28.8%, P=0.017) following isolated aortic valve replacement.
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