Fig. 2From: Measurement variability of right atrial and ventricular monophasic action potential and refractory period measurements in the standing non-sedated horseUltrasound images of the contact MAP electrode (arrow) positioned at the level of the intervenous tubercle (IT) in the right atrium (a), at the level of the right atrial free wall (b) and in the right ventricular apex (c). RA: right atrium, TV: tricuspid valve, RV: right ventricle, LV: left ventricle, IVS: interventricular septumBack to article page