Direct Aortic Versus Peripheral Arterial Cannulation in Surgery for Type A Aortic Dissection

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Vascular Surgery

Background:

• Controversy exists regarding the optimal cannulation strategy for Stanford type A aortic dissection repair.
• Peripheral arterial cannulation and direct aortic cannulation are two primary methods used.

Purpose of the Study:

• To compare the early surgical outcomes of direct aortic cannulation versus peripheral arterial cannulation in patients with acute type A aortic dissection.

Main Methods:

• A retrospective analysis of 309 consecutive patients undergoing surgical repair for acute type A aortic dissection.
• Comparison of early outcomes between patients who received direct aortic cannulation (n=80) and peripheral arterial cannulation (n=229).
• Propensity score matching was used to control for confounding factors in a subset of patients (74 pairs).

Main Results:

• Hospital mortality rates were similar between direct aortic cannulation (13.8%) and peripheral arterial cannulation (13.5%) groups (P=.962).
• Stroke/global brain ischemia rates were also comparable: 22.3% for direct aortic cannulation versus 25% for peripheral arterial cannulation (P=.617).
• Propensity score matched analysis confirmed similar outcomes for mortality, stroke, composite outcomes, renal replacement therapy, and ICU length of stay.

Conclusions:

• Central arterial cannulation (direct aortic cannulation) provides a straightforward approach for surgical repair of type A aortic dissection.
• Early outcomes, including mortality and stroke, are similar when comparing direct aortic cannulation to peripheral arterial cannulation.