After a cardiac catheterization, why is the patient kept flat?

• A. To prevent dislodging of clot
• B. To speed up metabolism
• C. To ensure comfortable sleep
• D. To reduce edema

Answer: (A)

Maintaining a flat position after a cardiac catheterization focuses on preserving hemostasis at the arterial access site. The puncture from the catheter needs time to form a stable clot and seal the vessel. Keeping the patient flat minimizes movement and gravitational forces that could disrupt the clot or push blood through the puncture, reducing the risk of bleeding and hematoma. This is especially true for femoral access, where bending the leg or sitting up can increase bleeding risk. The other options don’t address the immediate need to protect the puncture site and prevent bleeding.