Millar Pressure-Volume Systems (MPVS Ultra) simultaneously and continuously measure high-fidelity left ventricular pressure and relative volume from the intact beating hearts of small and large animals.

Using the MPVS, cardiovascular pressure and volume signals can be plotted against each other in real time, generating the characteristic pressure-volume (P-V) loops that are an excellent illustration of the cardiac cycle in normal or diseased conditions of the living heart. With the MPVS, P-V loops may be captured during pharmacological, therapeutic, and hemodynamic interventions, allowing comprehensive evaluation of the fundamental mechanical properties of the heart. Real-time analysis of these PV loop curves, in addition to all other cardiopulmonary signals, are performed by iox2 software.

The MPVS system provides the least invasive, most robust means for complete hemodynamic assessment of animals.