Peripheral artery disease is an independent risk factor for higher in-hospital mortality in Stanford type A aortic dissection repair

Abstract

Background

Type A aortic dissection (TAAD) is an emergent condition that warrants immediate intervention. Peripheral artery disease (PAD) is a prevalent disease associated with worse outcomes in various cardiovascular procedures. However, it remains unclear whether PAD influences outcomes of TAAD repair. This study aimed to undertake a population-based analysis to assess impact of PAD on in-hospital outcomes following TAAD repair.

Methods

Patients underwent TAAD repair were identified in National Inpatient Sample from Q4 2015 to 2020. Multivariable logistic regressions were used to compare in-hospital outcomes between patients with and without PAD, adjusted for demographics, socioeconomic status, primary payer status, hospital characteristics, comorbidities, and transfer/admission status.

Results

1525 patients with PAD and 2757 non-PAD patients underwent TAAD. PAD patients had higher mortality (18.62% vs 13.17%, aOR = 1.287, p = .01), AKI (51.41% vs 47.48%, aOR = 1.222, p < .01), infection (10.69% vs 8.02%, aOR = 1.269, p = .03), and vascular complication (7.28% vs 3.77%, aOR = 1.846, p < .01) but lower risks of pericardial complications (15.21% vs 19.95%, aOR = 0.696, p < .01). In addition, patients with PAD had longer time from admission to operation (1.29 ± 3.95 vs 0.70 ± 2.09 days, p < .01), longer LOS (14.92 ± 13.98 vs 13.41 ± 11.66 days, p = .01), and higher hospital charge (499,064 ± 519,405 vs 409,754 ± 405,663 US dollars, p < .01).

Conclusion

PAD was independently associated with worse outcome after TAAD repair. The elevated mortality rate could be attributed to the delay in surgery, which may be related to preoperative peripheral malperfusion syndrome that is common in PAD patients. A balance between preoperative management and immediate TAAD repair might be essential to prevent the increased mortality risk from treatment delays among PAD patients.

Keywords

Type A aortic dissection peripheral artery disease mortality delay

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