What does balloon nominal pressure refer to?

Balloon nominal pressure specifically refers to the pressure at which a balloon is inflated to its intended or published size, which is crucial for the effectiveness of various interventional procedures, such as angioplasty. This pressure is defined by the manufacturer and ensures that the balloon expands to the dimensions that are necessary for optimal function during procedures like opening occluded vessels. By adhering to the nominal pressure, clinicians can rely on predictable outcomes, as the balloon achieves the appropriate diameter for dilating the vessel without exceeding safety limits.

The other options relate to balloon functionality but do not specifically define nominal pressure. The maximum pressure a balloon can withstand before bursting is related to the balloon's safety threshold rather than its intended operation. The pressure required for optimal dilation might vary based on the clinical scenario, while the pressure at which a balloon should be deflated concerns the procedure's execution rather than the defined nominal capacity. Therefore, understanding nominal pressure is essential for effective and safe interventions in interventional radiology.