Accuracy of different oxygenation indices in estimating intrapulmonary shunting at increasing infusion rates of dobutamine in horses under general anaesthesia. Issue 3 (June 2015) - Briganti, A.
Highlights Dobutamine infusion profoundly affects oxygen extraction in horses anaesthetised with isoflurane. All the OTIs tested in this study demonstrated a poor correlation with the Qs/Qt. F-shunt is the most reliable OI for the estimation of Qs/Qt independent of the haemodynamic conditions of the patient. OTIs should be used cautiously in horses under isoflurane anaesthesia.