A client is scheduled for a cardiac catheterization. Which information would be most important for the nurse to include in the plan of care?

Orthopnea — difficulty breathing when lying flat — is the most important information to include in the plan of care for a client scheduled for cardiac catheterization. During the procedure, the client must lie flat and still on a procedure table for an extended period. A client with orthopnea, which is commonly caused by heart failure or other cardiopulmonary conditions, may be unable to tolerate this position, posing significant safety and comfort concerns. The care team must plan for accommodations such as head-of-bed elevation or positioning modifications, and the cardiologist must be aware of this limitation before the procedure begins. A history of migraines is generally not a contraindication or significant factor for cardiac catheterization. Recent vaccinations do not affect procedural safety or outcomes for this intervention. Recent weight loss may be clinically relevant in other contexts but does not directly impact procedural planning or patient positioning the way orthopnea does. Orthopnea directly affects the client's ability to tolerate the supine position required throughout the catheterization procedure, making it the highest-priority piece of information to communicate in the plan of care.