What is the recommended pace for cutting balloon inflation to nominal pressure?

• A. 1 ATM every 5 seconds to nominal (6 ATM)
• B. Rapid inflation to nominal in 1 second
• C. Continuous inflation without a rate limit
• D. Inflate to nominal in 30 seconds or more

Answer: (A)

Gradual inflation to nominal pressure is the safest and most effective approach when using a cutting balloon. The blades are designed to score the plaque as the balloon expands, so expanding in small, controlled increments allows the device to engage the lesion evenly and reduces the risk of abrupt wall stress that could cause dissection or rupture. Increasing pressure at about 1 atm every 5 seconds up to the nominal pressure (typically around 6 atm) provides a predictable, monitored expansion and helps you detect any resistance or balloon issues early.

Inflating very quickly to nominal in one second subjects the vessel to a sudden surge in pressure, increasing the risk of tearing or perforation. Inflation without a rate limit lacks the control needed to monitor how the vessel and lesion respond, while taking 30 seconds or more to reach nominal unnecessarily prolongs ischemia and can raise the chance of thrombus formation. The consistent, paced approach balances safety with effective lesion modification.