Influence of Respiratory Mechanics and Patient's Inspiratory Effort on Pressure-Time Scalar Morphology

In pressure control mode, the pressure remains constant regardless of the respiratory mechanics. Conversely, in volume control mode, the morphology of the pressure-time scalar is influenced by Pmus (muscle pressure generated by inspiratory muscles), resistance, and compliance of the respiratory system. 

In volume control mode a stronger Pmus can cause a downward deviation in the pressure-time scalar. Increased resistance results in a higher peak inspiratory pressure and a greater difference between peak pressure and plateau pressure. Elastic load leads to increased peak and plateau pressures, but the difference between these pressures remains normal