Why the study?
Recent evidence was needed to investigate and update volume-outcome relationships after open surgical repair and endovascular repair of abdominal aortic aneurysm in England.
Does higher annual hospital volume improve in-hospital mortality in patients undergoing open or endovascular repair of abdominal aortic aneurysm?
Population
Patients undergoing OSR or EVAR of abdominal aortic aneurysm in England
Comparison
Hospital procedure volume
Design
Retrospective administrative database study
Key result
Higher annual hospital volumes of abdominal aortic aneurysm repairs were associated with significantly lower in-hospital mortality for open surgical repair, but not for endovascular repair.
Authors
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May support selective referral for open AAA repair to higher-volume centers; leaves open volume standards for EVAR.
Observational (n=72,022)
Yes
Does higher annual hospital volume improve in-hospital mortality in patients undergoing open or endovascular repair of abdominal aortic aneurysm?
Effect estimate: OR 0.996 (95% CI 0.995-0.998)
p-value: p=<0.001
Higher annual hospital volume of AAA repairs is associated with significantly lower in-hospital mortality for open surgical repair, but not for endovascular repair.
Tong et al. (2021) conducted an observational in Abdominal aortic aneurysm (n=72,022). Higher annual hospital volume vs. Lower annual hospital volume was evaluated on In-hospital mortality (elective open surgical repair) (OR 0.996, 95% CI 0.995-0.998, p=<0.001). Higher annual hospital volumes of abdominal aortic aneurysm repairs were associated with significantly lower in-hospital mortality for open surgical repair, but not for endovascular repair.