Which procedure is used for continuous arterial pressure monitoring?

The procedure used for continuous arterial pressure monitoring is cardiac catheterization. This technique involves the insertion of a catheter into an artery (often the radial or femoral artery) to directly measure blood pressure and obtain continuous readings. It allows healthcare providers to monitor the patient's hemodynamic status in real-time, which is critical for managing various medical conditions.

Although arterial blood sampling is vital for obtaining blood gases and other laboratory values, it is not intended for continuous monitoring. Instead, it provides a snapshot of the patient's blood values at a specific moment in time. Other options listed, such as an umbilical line insertion and exchange transfusion, serve different purposes in clinical practice, such as vascular access or blood volume management, rather than continuous monitoring of arterial blood pressure.