In controlled ventilation – a) Patient is activeb) Patient is passivec) Ventilator is actived) IPPVe) Ventilater is passive
abc
bcd
ac
bd
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).