Deep hypothermic circulatory arrest with and without retrograde cerebral perfusion

Area of Science:

• Cardiovascular Surgery
• Neurology
• Thoracic Surgery

Background:

• Postoperative stroke and early death are significant risks in aortic arch surgery.
• Retrograde Cerebral Perfusion (RCP) is a technique used to mitigate these risks.
• The overall impact of RCP in complex surgical cases requires further evaluation.

Purpose of the Study:

• To evaluate the protective efficacy of RCP against postoperative stroke and early death in patients undergoing aortic arch surgery.
• To identify factors that may diminish the protective benefits of RCP.
• To assess the combined effect of RCP and Deep Hypothermic Circulatory Arrest (DHCA) in preventing adverse outcomes.

Main Methods:

• Retrospective analysis of patients undergoing aortic arch repair.
• Comparison of outcomes between patients who received RCP and those who did not.
• Subgroup analysis based on patient comorbidities and surgical procedures.

Main Results:

• RCP demonstrated significant protection against postoperative stroke and early death.
• The protective benefit of RCP was diminished in patients with COPD, cardiac complications, composite valve replacement, and pre-existing cerebrovascular disease.
• RCP used with DHCA significantly reduced the likelihood of stroke and early mortality.

Conclusions:

• RCP offers significant protection in aortic arch surgery, particularly when combined with DHCA.
• Patient-specific factors and comorbidities can influence the net benefit of RCP.
• RCP's simplicity and efficacy warrant its continued use in surgical repair of aortic arch abnormalities.