Use of Electrical Impedance Tomography (EIT) to Estimate Tidal Volume in Anaesthetized Horses Undergoing Elective Surgery.

This study explores the application of electric impedance tomography (EIT) to estimate tidal volume (VT) by measuring impedance change per breath (∆Z). Seventeen healthy horses were anaesthetised and mechanically ventilated for elective procedures requiring dorsal recumbency. Spirometric VT (VT) and ∆Z were recorded periodically; up to six times throughout anaesthesia.

Comparison of four peribulbar anaesthetic techniques: a preliminary study in equine cadavers.

Objective: To compare the peribulbar injectate distribution and probability of regional anaesthesia of four peribulbar anaesthetic techniques in equine cadavers.

Study Design: Prospective experimental cadaver study.

Animals: A total of 12 isolated equine cadaver heads and 24 eyes.