In one embodiment, a method for categorizing a state of a subject undergoing therapy from a mechanical ventilator is disclosed. The method includes receiving, at a device, one or more cardiovascular measurements regarding the subject, a respiratory rate from the ventilator, a carbon dioxide (CO2) measurement regarding the subject, and a tidal volume value from the ventilator. The method also includes selecting, by the device, a ventilation category based on the one or more cardiovascular measurements, the respiratory rate, the CO2 measurement, and the tidal volume value. The method further includes retrieving, by the device, an alert that is associated with the selected ventilation category. The method additionally includes providing, by the device, the alert to a user interface device.
