Mechanical power (medicine) explained

In medicine, mechanical power is a measure of the amount of energy imparted to a patient by a mechanical ventilator.[1] [2] [3] [4] [5]

While in many cases mechanical ventilation is a life-saving or life-preserving intervention, it also has the potential to cause harm to the patient via ventilator-associated lung injury. A number of stresses may be induced by the ventilator on the patient's lung. These include barotrauma caused by pressure, volutrauma caused by distension of the lungs, rheotrauma caused by fast-flowing delivery of gases and atelectotrauma resulting from repeated collapse and re-opening of the lung.

The purpose of mechanical power is to provide a quantity which can account for all of these stresses and therefore predict the amount of lung injury which is likely to be seen in the patient.

References

There is no agreed upon equation for Mechanical Power.

Notes and References

  1. Gattinoni . L . Tonetti . T . Cressoni . M . Cadringher . P . Herrmann . P . Moerer . O . Protti . A . Oct 2016 . Ventilator-related causes of lung injury: the mechanical power . Intensive Care Med . 42 . 10. 1567–1575 . 27620287 . 10.1007/s00134-016-4505-2 . 24768717 .
  2. 28904482 . 10.4103/ijccm.IJCCM_411_16 . 21 . 8 . Mathematics of Ventilator-induced Lung Injury . 5588487 . 2017 . Indian J Crit Care Med . 521–524 . Rahaman . U . free .
  3. Tonetti . T . Vasques . F . Rapetti . F . Maiolo . G . Collino . F . Romitti . F . Camporota . L . Jul 2017 . Driving pressure and mechanical power: new targets for VILI prevention . Ann Transl Med . 5 . 14. 286 . 28828361 . 10.21037/atm.2017.07.08 . 5537108 . free .
  4. Gattinoni. Luciano. Marini. John J.. Collino. Francesca. Maiolo. Giorgia. Rapetti. Francesca. Tonetti. Tommaso. Vasques. Francesco. Quintel. Michael. The future of mechanical ventilation: lessons from the present and the past. Critical Care. 12 July 2017. 21. 1. 183. 10.1186/s13054-017-1750-x. 28701178. 5508674 . free .
  5. Maia . LA . Samary . CS . Oliveira . MV . Santos . CL . Huhle . R . Capelozzi . VL . Oct 2017 . Impact of Different Ventilation Strategies on Driving Pressure, Mechanical Power, and Biological Markers During Open Abdominal Surgery in Rats . Anesth Analg . 125 . 4. 1364–1374 . 28759484 . 10.1213/ANE.0000000000002348 . 8752045 .

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