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Intensive Care Medicine

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01.06.2005 | Seminal Study

The concept of “baby lung”

verfasst von: Luciano Gattinoni, Antonio Pesenti

Erschienen in: Intensive Care Medicine | Ausgabe 6/2005

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Abstract

Background

The “baby lung” concept originated as an offspring of computed tomography examinations which showed in most patients with acute lung injury/acute respiratory distress syndrome that the normally aerated tissue has the dimensions of the lung of a 5- to 6-year-old child (300–500 g aerated tissue).

Discussion

The respiratory system compliance is linearly related to the “baby lung” dimensions, suggesting that the acute respiratory distress syndrome lung is not “stiff” but instead small, with nearly normal intrinsic elasticity. Initially we taught that the “baby lung” is a distinct anatomical structure, in the nondependent lung regions. However, the density redistribution in prone position shows that the “baby lung” is a functional and not an anatomical concept. This provides a rational for “gentle lung treatment” and a background to explain concepts such as baro- and volutrauma.

Conclusions

From a physiological perspective the “baby lung” helps to understand ventilator-induced lung injury. In this context, what appears dangerous is not the V_T/kg ratio but instead the V_T/”baby lung” ratio. The practical message is straightforward: the smaller the “baby lung,” the greater is the potential for unsafe mechanical ventilation.

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Titel: The concept of “baby lung”
verfasst von: Luciano Gattinoni
Antonio Pesenti
Publikationsdatum: 01.06.2005
Verlag: Springer-Verlag
Erschienen in: Intensive Care Medicine / Ausgabe 6/2005
Print ISSN: 0342-4642
Elektronische ISSN: 1432-1238
DOI: https://doi.org/10.1007/s00134-005-2627-z

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The concept of “baby lung”

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