A medical ventilator (100, 200) including a first user interface (114) having a touch-sensitive display having a display area； and at least one controller (104) which determines whether a second user interface (122, 222) having a touch-sensitive display is coupled to the medical ventilator, enables the first user interface when it is determined that the second user interface is not coupled to the medical ventilator, and enables the second user interface when it is determined that the second user interface is coupled to the medical ventilator.
