Possible technique to measure ventricular volume using electrical impedance measurements with an oesophageal electrode.
D002307:Cardiography, Impedance / Q000295:instrumentation*; D004566:Electrodes; D006321:Heart / Q000502:physiology*; D006801:Humans; D010992:Plethysmography, Impedance / Q000295:instrumentation*; D013318:Stroke Volume; D016276:Ventricular Function