Artificial Ventilation by David J. Baker

Author:David J. Baker
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

Synchronised Mandatory Minute Volume

IMV and SIMV work on the principle that the respiratory minute volume needed to provide adequate ventilation is divided between the ventilator and the patient. Thus, if the patient does not breathe adequately or stops breathing altogether he receives compensatory ventilation from the ventilator to provide an adequate minute volume. Synchronised mandatory minute volume mode (SMMV) works on a different principle from SIMV in that it is the overall minute volume and not time that is the determining factor in deciding the need for supplementary ventilation from the ventilator in a patient with partial respiratory failure. In classical SMMV the ventilator measures the volume of gas being breathed by the patient over a set period of time (e.g. 10 s) and compares this with a set minute volume. If there is a discrepancy between the actual minute volume and the set delivered minute volume, an automatic ventilation is delivered which corrects the difference, thus ensuring an adequate minute volume.

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