EIT Observed Hypoxemia Caused by V/Q Mismatch During One‐Lung Ventilation With Indocyanine Green Inhalation: A Report of Two Cases

ABSTRACT Nebulization under one‐lung ventilation (OLV) can facilitate precise localisation of pulmonary tumours and assist in surgical manipulation. However, hypoxaemia during the nebulization process remains a challenging issue. In this report, we present two cases monitored using Electrical Impedance Tomography (EIT), where individual differences in pulmonary blood flow redistribution contributed to hypoxaemia. This phenomenon was further exacerbated in the lateral decubitus position with the ventilated lung in the upper position. EIT provided real‐time insights into ventilation‐perfusion (V/Q) distribution, offering valuable guidance for managing hypoxaemia during nebulization and surgery under OLV.