Intermittent Mandatory Ventilation

  • Steven M. DonnEmail author
  • Sunil K. Sinha
  1. I.
    1. A.
      1. 1.

        Intermittent mandatory ventilation (IMV) provides a fixed rate of mechanical ventilation, determined by the clinician, and allows spontaneous breathing between mechanical breaths.

      2. 2.

        This mode may be utilized in the acute care phase (high rates) or the weaning phase (low rates).

    2. B.
      1. 1.

        Mandatory breaths occur at fixed intervals determined by the preset breath rate (BR). Total cycle time is the BR (bpm) divided by 60 s/min.

      2. 2.

        With pressure targeting, the mandatory tidal volume (VT) is determined by the preset pressure limit (PL), flow, and inspiratory time (TI), as well as the patient’s compliance (CL) and airway resistance (RAW).

      3. 3.

        VT may not be stable breath to breath, particularly if the patient is breathing asynchronously with the ventilator.

      4. 4.

        The patient may breath spontaneously between mandatory breaths from a flow of gas, with a preset oxygen fraction (FiO2), provided from the ventilator (continuous and/or demand...


Airway Pressure Inspiratory Pressure Peep Level Inspiratory Phase Intermittent Mandatory Ventilation 
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Suggested Reading

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Division of Neonatal–Perinatal MedicineC.S. Mott Children’s Hospital, F5790 Mott Hospital/5254, University of Michigan Health SystemAnn ArborUSA
  2. 2.Department of Neonatal MedicineThe James Cook University Hospital, University of DurhamMarton-in-ClevelandUK

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