Comment on 'Relationship between gas exchange response to prone position and lung recruitability during acute respiratory failure'.

摘要

Sir: We read with interest Dr. Protti et al.'s [1] investigation into the decrease of PaCO_2 during ventilation in the prone position and its relationship with lung recruitability measured via whole-lung computed tomography scanning (CT).In their representative CT images of the low and high percentage of recruitable lung in Fig. 1, the heart size of the patient with high lung recruitability appears to be rather large prior to recruitment, suggesting the presence of an element of left ventricular failure.