<prompt> In controlled ventilation a Patient is activeb Patient is passivec Ventilator is actived IPPVe Ventilater is passiveabcbcdacbd  <response>: Controlled mechanical ventilation is total support ventilator, i.e. total support is provided by ventilator :- ventilator is active and does all the work; patient is passive. CMV is also known as intermittent positive pressure ventilation IPPV. 