In one embodiment, an apparatus includes a shared memory buffer including a lead memory bank and a write multiplexing module configured to send a leading segment from a set of segments to the lead memory bank. The inventive table includes two interchangeable table tops, one of which includes a compartment that can hold and transport the remainder of the table when disassembled. The systems and methods further include a step of calculating the left ventricular end-diastolic pressure using the measured cardiac parameters. Various equipment elements of an equipment cluster may be provided different levels andor types of redundancy.