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Fig. 3 | Annals of Intensive Care

Fig. 3

From: Aerosol delivery with two ventilation modes during mechanical ventilation: a randomized study

Fig. 3

High intersubject variability of aerosol penetration through the lungs and its deposition between the right and the left lung during pressure support ventilation and volume-controlled ventilation. a A penetration index equal to 1 indicated a linear aerosol penetration from the inner to the outer part of the lungs. Particles deposition was limited to the central airways with both ventilation modes. b A right/left lung deposition ratio equal to 1 indicated a similar aerosol deposition in both lungs. Right lung deposition was predominant with both ventilation modes, especially during volume-controlled ventilation. c Scintigraphic images of aerosol lung deposition in two patients in volume-controlled ventilation (left) and two patients in pressure support ventilation (right). With both ventilation modes, the first patient on the left benefits of a symmetrical aerosol lung deposition while a predominant left lung or right lung deposition is depicted in the patient on the right. Aerosol penetration from the inner to the outer lung region varies also among patients

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