Direct true lumen versus conventional cannulation for acute type-A aortic dissection.

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Vascular Surgery

Background:

• Acute type-A aortic dissection is a critical surgical emergency with high mortality.
• Aortic dissection is under-reported in Pakistan, highlighting a need for improved management strategies.
• Advancements in surgical techniques, such as direct true lumen cannulation, offer potential for better patient outcomes.

Purpose of the Study:

• To compare mortality and morbidity outcomes between direct true lumen cannulation and conventional cannulation techniques.
• To evaluate the efficacy of direct true lumen cannulation for arterial access in acute type-A aortic dissection.
• To assess the reliability of direct true lumen cannulation in a single-center retrospective review.

Main Methods:

• A single-center retrospective review was conducted from 2007 to 2017.
• Patients with acute type-A aortic dissection were divided into two groups: direct true lumen cannulation and conventional cannulation.
• Mortality and morbidity outcomes were compared between the two arterial cannulation techniques.

Main Results:

• The conventional cannulation group (Group-B) exhibited a higher frequency of overall morbidity, although not statistically significant (p>0.999).
• Mortality rates were notably higher in the conventional cannulation group (30%) compared to the direct true lumen group (10%), though this difference did not reach statistical significance (p=0.582).
• Participant demographics showed similar mean ages (43.3±11.6 vs 45±12.4 years) with a male predominance in both groups.

Conclusions:

• Direct true lumen cannulation is a reliable option for establishing cardiopulmonary bypass in acute type-A aortic dissection.
• The technique is associated with reduced mortality and morbidity, suggesting it may be a preferred method.
• Preference for direct true lumen cannulation is particularly recommended when dissection extends into the femoral and innominate arteries.