An assembly of devices designed to continuously obtain, amplify, and record various signals generated during procedures usually performed in the cardiac catheterization laboratory. It typically consists of a computerized central workstation including a monitor and a graphic recorder, and a slave monitor including patient interface modules in the catheterization laboratory. The system is used for procedures such as left heart catheterization, right heart catheterization ventriculograms, coronary angiography, and pacemaker insertions; also used in procedures intended for the determination of most haemodynamic characteristics, evaluation of therapies, and planning of surgical approaches.