What solution volume is used as the flush for the IABP catheter system?

What solution volume is used as the flush for the IABP catheter system?

• A. 500 mL
• B. 1000 mL
• C. 1500 mL
• D. 2000 mL

Answer: (B)

Maintaining a continuous, sterile flush through the IABP catheter system is essential to keep all lumens patent and to prevent air entry and thrombus as the pump cycles. The flush bag must contain enough saline (often heparinized) to fill the catheter and all extension tubing, and to provide a reservoir for the duration between bag changes. If the volume is too small, the bag can run dry and disrupt the flush; if it’s too large, you risk unnecessary fluid load and cost without added benefit. In practice, a mid-range, standard-volume bag is used, which reliably supports patency without excess fluid administration. This middle option is the best choice.

Maintaining a continuous, sterile flush through the IABP catheter system is essential to keep all lumens patent and to prevent air entry and thrombus as the pump cycles. The flush bag must contain enough saline (often heparinized) to fill the catheter and all extension tubing, and to provide a reservoir for the duration between bag changes. If the volume is too small, the bag can run dry and disrupt the flush; if it’s too large, you risk unnecessary fluid load and cost without added benefit. In practice, a mid-range, standard-volume bag is used, which reliably supports patency without excess fluid administration. This middle option is the best choice.