RPB stands for which concept in balloon testing?

• A. Amount of pressure that can be safely applied without risk of rupturing balloon
• B. Pressure until balloon expands to maximum diameter
• C. Safety threshold of inflation device
• D. Nominal inflation pressure

Answer: (A)

The key idea is knowing the safe inflation limit of a balloon, defined as the rated burst pressure. This is the maximum pressure at which the balloon can be inflated without risk of rupture under standard testing conditions, and it defines the usable safety envelope during procedures. The option describing the pressure that can be safely applied without risking rupture matches this concept of rated burst pressure.

The other ideas refer to different balloon performance aspects: a pressure required to reach the maximum diameter relates to expansion performance rather than safety limits; a safety threshold of the inflation device concerns the equipment rather than the balloon itself; and nominal inflation pressure denotes the pressure corresponding to the nominal (specified) size, not the upper safe limit.