Weighing the Risks: The Impact of Body Mass Index on Outcomes After Frozen Elephant Trunk Aortic Arch Repair.

In our cohort, the prevalence of prior cardiac and aortic surgery was notably high across all BMI categories, with a numerical trend toward more prior aortic interventions in lower-weight patients.

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Although subgroup-specific effects were not statistically significant, the hazard for mortality was numerically higher in overweight patients (BMI > 25 kg/m 2 ), suggesting a possible trend toward greater vulnerability with longer cross-clamp times.

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However, the subgroup-specific estimates did not reach statistical significance.

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