Ventilation apparatus for providing a respiratory gas to a patient, comprising a micro blower delivering a respiratory gas, an internal gas circuit for conveying the respiratory gas, at least one pressure sensor for measuring the pressure of the gas, a graphical user interface and an electronic control unit electrically connected to the micro blower, to the pressure sensor and to the graphical user interface, said pressure sensor furthermore being configured to measure and transmit pressure measurement signals to the electronic control unit, characterized in that: - it comprises adjustment means which are configured to allow a user to set or select: ∘ at least one inhalation aid pressure value between 1 and 50 cmH 2 O and ∘ at least one positive expiratory pressure value between 0 and 50 cmH 2 O, - the electronic control unit is configured to calculate, set, select or determine: ▪ a maximum pressure (P max) on the basis of the inhalation aid pressure and positive expiratory pressure values set or selected by the user, with P max = AI + PEP + k, where k is a pre-set non-zero pressure value between 1 and 20 cmH 2 O, and ▪ a minimum pressure (P min) between 1 and 10 cmH 2 O, with P min < AI + PEP, - the electronic control unit is configured to calculate or determine, on the basis of the pressure measurement signals originating from the pressure sensor, at least: ∘ an expiratory pressure (P expi) of the patient corresponding to the pressure value measured at the end of each expiratory phase of the patient, ∘ an inhalation pressure (P insp) of the patient corresponding to the pressure value measured at the end of each inhalation phase of the patient, and ∘ an instantaneous pressure (P inst) corresponding to the continuously measured instantaneous pressure value, - and the graphical user interface is configured to simultaneously display, on a single graphical item, at least: ∘ the maximum pressure (P max), ∘ the minimum pressure (P min), ∘ the expiratory pressure (P expi), ∘ the inhalation pressure (P insp), and ∘ the instantaneous pressure (P inst). - it comprises adjustment means which are configured to allow a user to set or select: ∘ at least one inhalation aid pressure value between 1 and 50 cmH 2 O and ∘ at least one positive expiratory pressure value between 0 and 50 cmH 2 O, ∘ at least one inhalation aid pressure value between 1 and 50 cmH 2 O and ∘ at least one positive expiratory pressure value between 0 and 50 cmH 2 O, - the electronic control unit is configured to calculate, set, select or determine: ▪ a maximum pressure (P max) on the basis of the inhalation aid pressure and positive expiratory pressure values set or selected by the user, with P max = AI + PEP + k, where k is a pre-set non-zero pressure value between 1 and 20 cmH 2 O, and ▪ a minimum pressure (P min) between 1 and 10 cmH 2 O, with P min < AI + PEP, ▪ a maximum pressure (P max) on the basis of the inhalation aid pressure and positive expiratory pressure values set or selected by the user, with P max = AI + PEP + k, where k is a pre-set non-zero pressure value between 1 and 20 cmH 2 O, and ▪ a minimum pressure (P min) between 1 and 10 cmH 2 O, with P min < AI + PEP, - the electronic control unit is configured to calculate or determine, on the basis of the pressure measurement signals originating from the pressure sensor, at least: ∘ an expiratory pressure (P expi) of the patient corresponding to the pressure value measured at the end of each expiratory phase of the patient, ∘ an inhalation pressure (P insp) of the patient corresponding to the pressure value measured at the end of each inhalation phase of the patient, and ∘ an instantaneous pressure (P inst) corresponding to the continuously measured instantaneous pressure value, ∘ an expiratory pressure (P expi) of the patient corresponding to the pressure value measured at the end of each expiratory phase of the patient, ∘ an inhalation pressure (P insp) of the patient corresponding to the pressure value measured at the end of each inhalation phase of the patient, and ∘ an instantaneous pressure (P inst) corresponding to the continuously measured instantaneous pressure value, - and the graphical user interface is configured to simultaneously display, on a single graphical item, at least: ∘ the maximum pressure (P max), ∘ the minimum pressure (P min), ∘ the expiratory pressure (P expi), ∘ the inhalation pressure (P insp), and ∘ the instantaneous pressure (P inst). ∘ the maximum pressure (P max), ∘ the minimum pressure (P min), ∘ the expiratory pressure (P expi), ∘ the inhalation pressure (P insp), and ∘ the instantaneous pressure (P inst).