Is axillary artery cannulation necessary in type II hybrid aortic arch repair for acute type A aortic dissection?

Abstract

Introduction

Axillary artery cannulation (AAC) has been widely employed in total arch replacement surgeries using the frozen elephant trunk (FET) technique for acute type A aortic dissection (ATAAD), showing better clinical results than femoral artery cannulation (FAC). Nevertheless, in type II hybrid arch repair (HAR), FAC is crucial for lower body perfusion. Hence, it is unclear whether AAC remains necessary or if AAC represents a more advantageous method for initiating cardiopulmonary bypass.

Methods

We conducted a study involving patients diagnosed with ATAAD who underwent type II HAR from August 2021 to December 2022. Demographic baseline and intraoperative data were collected, and the postoperative outcomes of patients receiving FAC only were compared with those receiving AAC.

Results

There were no significant differences in baseline demographics between patients who underwent FAC alone (n = 46) and those who underwent AAC (n = 39). Patients who underwent AAC showed a lower incidence of transient neurological dysfunction (TND) post-surgery compared to those who underwent FAC (12.8% vs 32.6%, p = .032). There were no significant differences between the groups in terms of postoperative mortality within 30 days, permanent neurological dysfunction (PND), length of stay in the intensive care unit (ICU) and postoperative ward, duration of mechanical ventilation, and other complications.

Conclusions

Axillary artery cannulation may decrease the incidence of postoperative transient neurological dysfunction (TND) in type II HAR for ATAAD. Nonetheless, studies with larger sample sizes are necessary.

Keywords

acute type A aortic dissection axillary artery cannulation femoral artery cannulation transient neurological dysfunction type II hybrid arch repair

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