CMV today can assist or control itself dynamically, depending on the transient presence or absence of spontaneous breathing effort.
But despite continual technological improvement over the past half century, CMV may still be uncomfortable for the patient.
Continuous mandatory ventilation is associated with profound diaphragm muscle dysfunction and atrophy.
They are known by various vendor-specific terms such as pressure-regulated volume control (Siemens), autoflow (Dräger), adaptive-pressure ventilation (Hamilton Medical), and volume-control plus (Covidien), among others.
The nomenclature of mechanical ventilation has become more standardized, and these terms are no longer preferred but may still be seen in older research.