In what position should the arterial line be placed for CPB during interrupted arch repair?

In the context of cardiopulmonary bypass (CPB) during an interrupted aortic arch repair, the optimal placement of arterial lines is critical for adequately supporting circulation and ensuring proper perfusion. Placing two arterial lines, one proximal and one distal, is essential for this type of procedure.

The rationale behind using both proximal and distal arterial lines stems from the unique anatomical considerations present in interrupted aortic arch repairs. The interruption typically results in the separation of the aorta at varying levels, which demands effective management of blood flow to both the upper and lower parts of the body. By positioning one arterial line in the proximal region, typically in the ascending aorta, and the other in a distal location, such as the femoral artery, perfusion can be effectively maintained to all vital organs.

This dual arterial line setup allows for better control over blood flow dynamics and enables the perfusionist to monitor and adjust pressures more effectively throughout the entire body during the procedure. Proper perfusion is vital for preventing complications and ensuring the success of the repair.

The other options do not provide the same level of effectiveness for perfusion during interrupted arch repairs. For example, placing only in the right femoral artery would not adequately address perfusion needs of the