Novel approach to aortic cannulation suturing: tangential suture technique.

Area of Science:

• Cardiovascular Surgery
• Surgical Techniques
• Aortic Cannulation

Background:

• Ascending aortic cannulation using pursestring sutures in cardiopulmonary bypass can lead to complications, particularly in patients with thin or calcific aortas.
• Serious events may arise from the classic pursestring technique during open heart surgery.

Purpose of the Study:

• To introduce and evaluate a novel suturing method, the 'tangential suture technique', for ascending aortic cannulation.
• To compare the clinical outcomes of the tangential suture technique versus the classic pursestring technique.

Main Methods:

• A comparative study involving adult patients undergoing cardiopulmonary bypass.
• Group A (n=146) received the tangential suture technique, while Group B (n=152) received the classic pursestring technique.

Main Results:

• Subadventitial hematoma occurred less frequently in the tangential suture group (2.1%) compared to the pursestring group (8.6%), though not statistically significant.
• No aortic dissection was observed in either group.
• Significantly fewer patients in the tangential suture group required post-decannulation bleeding repair (0%) compared to the pursestring group (4.6%, P=0.0156).

Conclusions:

• The tangential suture technique minimizes tissue injury and reduces the likelihood of entering the aortic lumen, even in fragile aortas.
• This technique provides more stable closure, decreasing postoperative bleeding complications.
• The tangential suture technique is recommended over the classic pursestring method for ascending aortic cannulation.