In the Office setting OAS Trial, which data trend supported OAS?

• A. Much lower bailout stent rates (<5%)
• B. Much higher balloon pressures
• C. No difference in outcomes
• D. Increased distal embolization

Answer: (A)

The key idea is bailout stent rate as a measure of procedural safety and effectiveness in PCI, especially when considering an approach for use in an outpatient office setting. If the Office setting OAS Trial shows much lower bailout stent rates, it means the technique or device often achieves adequate lesion treatment without needing to switch to stenting to salvage the result. That reflects better initial success, fewer procedural complications, and greater suitability for performing PCI outside a full cath lab, all of which support the OAS approach in an office environment.

Higher balloon pressures would raise the risk of vessel injury or dissection, which would counter the benefit. No difference in outcomes wouldn’t demonstrate an advantage and wouldn’t explain why the approach would be favored in an office setting. Increased distal embolization would indicate added risk and complications, undermining feasibility for office use.